RU2819569C1 - Corrugated plate with smooth upper surface and elongated ribs and storage container - Google Patents

Abstract

FIELD: various technological processes.

SUBSTANCE: disclosed is a corrugated plate with a smooth top surface and elongated ribs, as well as a storage container. Corrugated plate includes a corrugated plate body, a longitudinal corrugation, a transverse corrugation and an intersection section. Intersection section includes a smooth top surface and four elongated ribs extending from the top surface to the corrugated plate body. Upper surface smoothly changes into elongated ribs. General direction of elongation of each of the elongated ribs crosses the transverse direction, the longitudinal direction and the height direction perpendicular to the corrugated plate body.

EFFECT: disclosed is a corrugated plate.

21 cl, 19 dwg

Description

[1] The present disclosure relates to the field of liquefied gas storage tanks for marine equipment, in particular marine equipment such as ships, and in particular to a corrugated plate for a liquefied gas storage tank of a transport device, in particular marine equipment such as ship, and a storage container including a corrugated plate. The storage container particularly includes tanks for storing liquefied gases for marine equipment, such as ships. Liquefied gases include, for example, liquefied natural gas, liquid nitrogen, liquid oxygen, liquid hydrogen, liquid helium, etc.

BACKGROUND OF THE ART

[2] Liquefied natural gas (LNG), due to its benefits of being environmentally friendly, environmentally friendly and highly efficient, has consistently ranked first among oil-replacing energy carriers and is becoming one of the fastest growing energy industries in the world. With the rapid development of China's economy and the constant increase in environmental protection requirements, the application and development of LNG is attracting more and more attention, and society's demand for clean energy is growing rapidly. LNG is one of the most important areas for the future development of clean energy in China.

[3] Transportation of LNG typically uses vehicles such as marine equipment such as ships. The composition of the LNG receiving station mainly includes berth unloading, LNG storage, processing and external transportation. The LNG storage tank carrying out the storage task has the longest construction period, the most advanced technology and the greatest difficulties in the project construction process, and is always managed as the critical path of the entire project. In addition, the design shape and technological innovation of the LNG storage tank are also the focus of Chinese and international industry experts.

[4] In an LNG storage tank, the corrugated plate used to form the sealing layer must maintain good sealing and stability under various operating conditions, so the design and quality of the corrugated plate are of particular importance. Existing corrugated plates require improvement in terms of material uniformity, smoothness and strength on the corrugations, especially at the intersection of transverse and longitudinal corrugations.

[5] Therefore, it is necessary to provide a corrugated plate and a storage container containing the corrugated plate to at least partially solve the above problems.

BRIEF DESCRIPTION OF THE INVENTION

[6] The object of the present disclosure is to provide a corrugated plate. The overall shape of the corrugated plate of the present disclosure is smooth and rigid, with relatively sharp deformations of the material at certain places, which not only ensures the overall strength and stability of the corrugated plate, but also provides better elasticity, shrinkage and stretching. The corrugated plate presented in the present disclosure can also retain the characteristics of the original material as much as possible.

[7] The present disclosure also provides a storage container having a corrugated plate, such as a storage container used for storing LNG, where the corrugated plate can be used as a sealing layer of the storage container. In one embodiment, the corrugated plate is cut into standard pieces that are assembled as a sealing layer in a storage container. The sealing layer of the present disclosure has good flatness, causes little damage to the structure of the thermal insulation layer, and can reduce the effect of the sealing layer on the strength of the thermal insulation box. The structure of the sealing layer of the present disclosure is such that the sealing layer can be made thinner, so that the overall thermal conductivity of the storage container can be reduced to improve the heat preservation effect.

[8] According to one aspect of the present disclosure, a corrugated plate is provided for a liquefied gas storage tank of a transport device. The corrugated plate includes a corrugated plate body, a longitudinal corrugation and a transverse corrugation formed on the corrugated plate body, and an intersection section at the intersection of the longitudinal corrugation and the transverse corrugation, wherein the height of the longitudinal corrugation is less than the height of the transverse corrugation, and the maximum transverse dimension of the longitudinal corrugation is less than the maximum longitudinal one. the size of the transverse corrugation, wherein the intersection portion includes a smooth central upper surface and four elongated ribs extending from the central upper surface to the body of the corrugated plate, the central upper surface smoothly transitioning into elongated ribs; where the general elongation direction of each of the elongated ribs intersects the transverse direction, the longitudinal direction and the height direction perpendicular to the body of the corrugated plate, and the height of the intersection portion is greater than the height of the longitudinal corrugation and the height of the transverse corrugation.

[9] The central upper surface and four elongated ribs at least partially form the body segment of the cross part, the cross part also includes two side segments that are located at the two ends of the body segment in the transverse direction, respectively, and the height of each of the side segments is less than the height transverse corrugation and body segment height.

[10] In one embodiment, the side segment extends along the longitudinal direction and has a protruding portion extending from the transverse corrugation in the longitudinal direction.

[11] In one embodiment, the upper portion of the side segment defines a depression extending along the longitudinal direction.

[12] In one embodiment, the intersection portion further includes a connecting segment between the body segment and the side segment, and a connecting segment with a narrowing in the transverse direction.

[13] In one embodiment, each of the elongated ribs has a ridge extending from the top to the bottom, and the width of each ridge remains the same in the direction from the top to the bottom.

[14] In one embodiment, the intersection portion includes a connecting segment between the body segment and the side segment, and the minimum longitudinal dimension of the top of the connecting segment is equal to or close to the width of the ridge.

[15] In one embodiment, on the projection plane defined by the transverse direction and the height direction, the upper surfaces of the body segment and the connecting segment are an uneven straight section and parallel to the body of the corrugated plate.

[16] In one embodiment, a trench is provided between the ridge and the side segment, parallel to the ridge and extending from the top to the bottom of the elongated rib.

[17] In one embodiment, the central top surface includes six boundary profiles, each of which is recessed towards the center of the central top surface, and all boundary profiles have the same radius of curvature and/or the same length.

[18] In one embodiment, the longitudinal dimension of the central top surface is greater than the transverse dimension of the central top surface.

[19] In one embodiment, the intersecting portion further includes a pair of side surfaces extending from the central top surface to the longitudinal corrugation, the pair of side surfaces having the same recess shape and the same radius of curvature as the boundary profiles on the respective top sides, and the distance between the central positions on the pair of side surfaces in the height direction is greater than the distance between the lower ends of the pair of side surfaces.

[20] In one embodiment, the respective profiles of the end projections of the transverse corrugation and the longitudinal corrugation have the shape of a circular arc.

[21] In one embodiment, the top of the side segment forms a four-pointed star shape when viewed downward.

[22] In one embodiment, in a top view of the corrugated plate, a body portion of each of the elongated ribs extends along a direction that intersects both the longitudinal and transverse directions, and a lower segment of each of the elongated ribs extends along the transverse direction.

[23] In one embodiment, the minimum transverse dimension of the top surface is more than twice the minimum longitudinal dimension of the top surface.

[24] According to another aspect of the present disclosure, a container for storing liquefied gas is provided, wherein a wall of the storage container includes a base layer and a sealing layer located on the inside of the base layer, and the sealing layer includes a corrugated plate of any of the embodiments in the above solution.

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

[26] central part;

[27] at least one annular section located around the central section, each of the at least one annular section including:

[28] A plurality of sealing plates obtained by cutting a corrugated plate; And

[29] a first seal connector located between circumferentially adjacent seal plates and securing both seal plates to the base layer.

[30] In one embodiment, there are at least two annular portions arranged in series around the circumference, and the sealing layer further includes a second annular portion connector disposed between adjacent annular portions and securing adjacent annular portions to the base layer.

[31] In one embodiment, the transverse corrugations and longitudinal corrugations of all the sealing plates of the annular section respectively form radial corrugations and circumferential corrugations of the annular section, the radial inner ends of a portion of the radial corrugations extend towards the central section, the radial inner ends of another portion of the radial corrugations are located in the middle portion the annular portion and away from the central portion, the maximum circumferential distance between adjacent radial corrugations is within a predetermined range, and a sealing plug is provided at the radial inner end of each of the radial corrugations.

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

[33] In one embodiment, the base layer also includes base layer plates arranged in an array, with a gap between adjacent base layer plates, each of the arrayed seal plates having a corrugation extending in the same direction as each gap, and the corrugation closes the gap.

[34] In one embodiment, the storage container is a liquefied gas storage container for offshore equipment or onshore cryogenic frozen liquid equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

[35] The drawings of the present disclosure are used as examples only.

[36] FIG. 1 is a schematic perspective view of a corrugated plate in accordance with some preferred embodiments of the present disclosure;

[37] FIG. 2 is a projection of the corrugated plate in FIG. 1 on a projection plane determined by the transverse direction and the height direction;

[38] FIG. 3 is a cross-sectional view taken along line A-A in FIG. 1;

[39] FIG. 4 is a projection of the corrugated plate in FIG. 1 on a projection plane defined by the longitudinal direction and the height direction;

[40] FIG. 5 is a cross-sectional view taken along line B-B in FIG. 1;

[41] FIG. 6 is a top view of part of the intersection in FIG. 1.

[42] FIG. 7 is a perspective view of a corrugated plate in accordance with another preferred embodiment of the present disclosure;

[43] FIG. 8 is a projection of the corrugated plate shown in FIG. 7, onto a projection plane defined by the transverse direction and the vertical direction;

[44] FIG. 9 is a projection of the corrugated plate shown in FIG. 7, onto a projection plane defined by the longitudinal direction and the vertical direction;

[45] FIG. 10 is a top view of the corrugated plate shown in FIG. 7.

[46] FIG. 11 is a partial top view of the bottom wall of a storage container in some preferred embodiments;

[47] FIG. 12 is a top view of approximately the entire bottom wall sealing layer of FIG. eleven;

[48] FIG. 13 is a schematic perspective view of another wall surface of a storage container in some preferred embodiments;

[49] FIG. 14 is a schematic perspective view of a corrugated plate in accordance with certain other preferred embodiments of the present disclosure;

[50] FIG. 15 is a projection of the corrugated plate in FIG. 14 onto a projection plane defined by the transverse direction and the height direction;

[51] FIG. 16 is a projection of the corrugated plate in FIG. 14 onto a projection plane defined by the longitudinal direction and the vertical direction;

[52] FIG. 17 is a cross-sectional view taken along line A-A in FIG. 14;

[53] FIG. 18 is a cross-sectional view taken along line B-B in FIG. 14; And

[54] FIG. 19 - top view of the corrugated plate.

[55] Designation of positions in the drawings:

[56] 500, 100, 100': Corrugated plate

[57] 50, 10, 10': Corrugated plate body

[58] 60, 20, 20': Longitudinal corrugation

[59] 70, 30, 30': Transverse corrugation

[60] 80, 40, 40': Intersection section

[61] 81, 41: Top surface

[62] 811, 46: First projection profile of the upper surface

[63] 812, 45: Second projection profile of the upper surface

[64] 8211, 8212: Profile boundary line

[65] 82: Extended rib

[66] 821: Upper segment

[67] 822: Lower segment

[68] 83: Second side surface

[69] 84: Hollow

[70] 85: First side surface

[71] 42: Transverse end face

[72] 43: Longitudinal end surface

[73] 44: Extended rib

[74] 441: Rib

[75] 411: Straight segment

[76] 4121: Dome shape

[77] 412: Protruding section

[78] 400, 510: Base layer

[79] 4110: Base layer plate

[80] 410: Base layer ring section

[81] 420: Center section of the base layer

[82] 310: Center section

[83] 3110: Central sealing plate

[84] 320: Ring section

[85] 3210: Ring section sealing plate

[86] 520: Sealing plate array

[87] 340: Second ring section connector

[88] 5210: First sealing connector

[89] 5220: Second sealing connector

[90] 420a: First ring section

[91] 420b: Second ring section

[92] 420c: Third ring section

[93] 350, 5110: Clearance

[94] 360: Another part of the radial corrugations

[95] 380: Part of the radial corrugations

[96] 370: Sealing end cap

[97] 41': Housing segment

[98] 411': Central top surface

[99] 412': Extended rib

[100] 4121': Comb

[101] 4101': straight section

[102] 42': Side segment

[103] 421': Upper part of the side segment

[104] 422': Protruding part

[105] 43'. Connecting segment

[106] 431': Middle position of the connecting segment in the transverse direction

[107] 432': Connection area of the connecting segment with the side segment

[108] 433': Connection area between the upper part of the connecting segment and the housing segment

[109] 44': Groove

[110] 45': Side surface

[111] 4111': First boundary profile

[112] 4112': Second boundary profile

[113] 4113': Third boundary profile

[114] 4114': Fourth boundary profile

[115] 4115': Fifth boundary profile

[116] 4116': Sixth boundary profile

DETAILED DESCRIPTION

[117] The present disclosure provides a corrugated plate for a liquefied gas storage tank of marine engineering equipment, in particular marine equipment such as a ship, and a liquefied gas storage container having the corrugated plate. The storage container is a liquefied gas storage container for marine equipment or a land-based device for cryogenic frozen liquid. In FIG. 1-10 and FIG. 15-19 show diagrams of a corrugated plate in accordance with preferred embodiments of the present disclosure. In FIG. 11-13 show partial diagrams of the wall of a storage container in accordance with preferred embodiments of the present disclosure.

[118] First of all, it should be noted that the terms of direction and position mentioned in this disclosure are only illustrative and not limiting descriptions. The description of the position of a component should be understood as a relative position rather than an absolute position, and the description of the direction of extension of a component should be understood as a relative direction rather than an absolute direction. The terms directions and positions related to the corrugated plate can be understood with reference to positions, directions, etc. various components shown in FIG. 1-10. For example, terms such as "top side", "up", "bottom side", "down", etc. each processing device component can be interpreted with reference to the corrugated plate placement orientations shown in FIG. 1-5 and FIG. 7-9. "Transverse direction" and "longitudinal direction" are two directions perpendicular to each other, where the transverse direction is represented by the symbol D2 and the longitudinal direction by the symbol D1. The transverse direction D2 and the longitudinal direction D1 jointly define the expansion plane of the corrugated plate body 50 of the corrugated plate. Direction height D3 is the direction perpendicular to the body of the corrugated plate 50.

[119] Referring first to FIG. 1, the corrugated plate 500 includes a flat corrugated plate body 50, a transverse corrugation 70 and a longitudinal corrugation 60 formed on the corrugated plate body 50, and a raised intersection portion 80 at the intersection of the longitudinal corrugation 60 and the transverse corrugation 70. The longitudinal corrugation of the corrugated plate refers to the corrugation, extending along the longitudinal direction D1, and the transverse corrugation refers to the corrugation extending along the transverse direction D2. In the embodiment shown in FIG. 1, the longitudinal dimension of the transverse corrugation 70 is gradually reduced in the direction from the lower side to the upper side, and the transverse dimension of the longitudinal corrugation 60 is gradually reduced in the direction from the lower side to the upper side. In addition, the height of the longitudinal corrugation 60 is less than the height of the transverse corrugation 70, and the maximum transverse dimension of the longitudinal corrugation 60 is less than the maximum longitudinal dimension of the transverse corrugation 70. In other words, the transverse corrugation is a large corrugation, and the longitudinal corrugation is a small corrugation. The height of each of the longitudinal corrugation 60 and the transverse corrugation 70 refers to the distance between the uppermost end of the corrugation and the body of the corrugated plate 50 in the height direction D3.

[120] In this embodiment, the transverse corrugation 70 and the longitudinal corrugation 60 are circular arc corrugations. For example, in the projection planes shown in FIG. 2 and FIG. 4, the projection profiles of the transverse corrugation 70 and the longitudinal corrugation 60 are formed in the shape of a circular arc, and their respective upper ends are formed in the form of circular arcs without edges or corners. In other embodiments not shown in the figure, the transverse corrugation and/or the longitudinal corrugation may be formed into triangular corrugations. For example, in a corresponding cross-section (cross-section perpendicular to the direction of elongation of the corrugation) of the corrugation, the cross-sectional profile of the corrugation is formed in the form of an uneven triangle, that is, the upper end of the corrugation may have an edge or a corner.

[121] In this embodiment, the height of the intersection portion 80 is greater than the height of the transverse corrugation and the height of the longitudinal corrugation. The height of the intersection portion 80 refers to the distance between the upper end of the intersection portion 80 and the corrugated plate body 50 in the height direction D3. The intersection portion 80 includes a smooth top surface 81 and four elongated ribs 82 extending from the top surface 81 to the corrugated plate body 50 on the bottom side. The top surface 81 smoothly merges into the elongated ribs 82, where the general extension direction of each of the elongated ribs 82 intersects the transverse direction D2, the longitudinal direction D1 and the height direction D3. It should be noted that "smooth top surface" means that the top surface 81 itself has no edges or corners.

[122] As can be seen from FIG. 1 and 6, the top surface 81 has four profile boundary lines 813, 814 that define the top surface 81. The four profile boundary lines 813, 814 are connected in series between four elongated ribs 82, and each of the four profile boundary lines is recessed toward the center of the top surface 81 in its middle position. It can be understood that the recess to the center of the top surface 81 means a recess to the center of the top surface 81 in a plane parallel to the body of the corrugated plate 50. The point of intersection of adjacent profile boundary lines forms the corner of the top surface 81, and the elongated rib 82 approximately extends from the corner of the top surface 81 to corrugated plate housing 50.

[123] With reference to FIG. 6, among the four profile boundary lines, two profile boundary lines 813 located at the two ends of the top surface 81 in the longitudinal direction have a recessed first radius of curvature, and two profile boundary lines 814 located at the two ends of the top surface 81 in the transverse direction have a recessed first radius of curvature. a second radius of curvature, wherein the first radius of curvature is greater than the second radius of curvature. It can be understood that the extending direction of the profile boundary lines 813 located at the two ends of the upper surface 81 in the longitudinal direction D1 approximately corresponds to the transverse direction D2, and the extending direction of the profile boundary lines 814 located at the two ends of the upper surface 81 in the transverse direction D2 approximately corresponds to the longitudinal direction D1. The recessed first radius of curvature of the profile boundary lines 813 is greater than the recessed second radius of curvature of the profile boundary lines 814, which means that the radian of the profile boundary lines 813 is shallower than the radian of the profile boundary lines 814. Alternatively, the recessed first radius of curvature of the profile boundary lines 813 may be equal to the recessed second radius of curvature of the boundary lines of profile 814, which means that the boundary lines of profile 813 and the boundary lines of profile 814 may have the same radius.

[124] In one embodiment, as seen from a general perspective, the longitudinal dimension of the top surface 81 is smaller than its transverse dimension. In one embodiment, the length of the boundary lines of profile 813 is greater than the length of the boundary lines of profile 814 such that the minimum transverse dimension W2 (see FIG. 6) of the top surface 81 is greater than the minimum longitudinal dimension W1 (see FIG. 6) of the top surface 81. For example , the minimum lateral dimension W2 of the upper surface 81 may be more than twice the minimum longitudinal dimension W1 of the upper surface 81.

[125] The following will refer to the projections shown in FIG. 2 and 4. As shown in FIG. 2, the projection (called the first projection profile of the top surface 811) of the top surface 81 on the projection plane defined by the height direction D3 and the lateral direction D2 is a curve. As shown in FIG. 4, the projection (called the second projection profile of the top surface 812) of the top surface 81 on the projection plane defined by the height direction D3 and the longitudinal direction D1 is a straight line segment. That is, from the center of the upper surface 81, the orientation of the extension of the upper surface 81 along the transverse direction D2 has a downward component, and the orientation of the extension of the upper surface 81 along the longitudinal direction D1 does not have a downward component.

[126] The upper surface 81 blends smoothly into the extended ribs 82. The angle between any position of the upper surface 81 and the reference plane (a plane parallel to the body of the corrugated plate 50) defined by the longitudinal direction D1 and the transverse direction D2 is less than the angle between the general extension direction of the extended edges 82 and the base plane. That is, referring to FIG. 2 and 4, the top surface 81 is an arcuate surface that is substantially parallel to the base plane while the elongated rib 82 extends distinctly downward. The general extension direction of each elongated rib 82 intersects the transverse direction D2, the longitudinal direction D1, and the height direction D3. The overall extension direction component of the elongated rib 82 in the plane defined by the height direction D3 and the lateral direction D2 is represented by D4 in FIG. 2; the overall extension direction component of the elongated rib 82 in the plane defined by the longitudinal direction D1 and the height direction D3 is represented by D5 in FIG. 4; and the general extension direction component of the elongated rib 82 in a plane parallel to the body of the corrugated plate 50 is represented by D6 in FIG. 6.

[127] Referring to FIG. 6, it can be noted that the projection extension direction D6 of each elongated rib 82 in the plan view is parallel to neither the longitudinal direction D1 nor the transverse direction D2. In one embodiment, the overall extension direction D6 in plan view is at an angle of approximately 40°-60° to the transverse direction D2 and the longitudinal direction D1. Further, the elongation direction of the lower segment 822 of the elongated rib 82 connected to the body of the corrugated plate 50 is different from the elongation direction of the body portion of the elongated rib 82. That is, different from the general elongation direction of the elongated rib 82, the lower segment 822 of the elongated rib 82 approximately extends along the transverse direction D2 and height direction D3. The extension direction component of the lower segment 822 in the plan view shown in FIG. 6, D7 is represented, and it can be seen that D7 is a direction parallel to the transverse direction of D2.

[128] In addition, each elongated rib 82 has a top segment 821 connected to the top surface 81, and the elongated rib 82 has a maximum thickness W at approximately the top segment 821 of the elongated rib 82 (see FIG. 1). The thickness of the elongated rib 82 gradually decreases in a direction from the upper end to the lower end of the elongated rib 82. The body of the elongated rib 82 blends smoothly into the upper segment 821 and the lower segment 822 of the elongated rib 82.

[129] FIG. 3 and 5 are cross-sectional views of the corrugated plate 500 shown in FIG. 1. Since the corrugated plate 500 itself is a relatively thin flat plate, cross sections obtained by cutting the corrugated plate 500 in FIG. 3 and 5 are represented only by profile lines, without indicating cross-sectional lines. Referring to FIG. 3 and 5, the intersection portion 80 also includes a first side surface 85 connecting the top surface 81 and the longitudinal corrugation 60, and a second side surface 83 connecting the top surface 81 and the transverse corrugation 70. The first side surface 85 and the second side surface 83 are approximately perpendicular to the body corrugated plate 50. As shown in cross sections in FIG. 3 and 5, the cross-sectional profiles of the first side surface 85 and the second side surface 83 are approximately straight sections parallel to the direction D3 (ie, perpendicular to the body of the corrugated plate 50). Of course, from FIG. 1, it can be seen that the first side surface 85 and the second side surface 83 are not flat, the first side surface 85 has a recess radius (i.e., recessed in a plane parallel to the body of the corrugated plate 50) corresponding to the first boundary line of the profile 8211, and the second side surface 83 has a recess radius corresponding to the second boundary line of profile 8212.

[130] Compared with the "first side surface extends downward and along the longitudinal direction" and "second side surface extends downward and along the transverse direction" solutions, such a structure in this embodiment results in a sharp change in the molding of the material, and the corrugated plate 500 has a larger elasticity and contractility. In addition, the intersection portion 80 has a more rigid and smooth shape, which may have greater strength and stability. Next, returning to FIG. 3, the position of the second side surface 83 that intersects the transverse corrugation 70 is recessed downward relative to the top of the transverse corrugation 70. This design creates a shallow depression 84 between the intersection portion 80 and the transverse corrugation 70, which also results in a relatively sharp deformation of the material, and therefore The 500 corrugated plate has greater elasticity and contractility. There is no such depression at the intersection between the first side surface 85 and the longitudinal corrugation 60. As can be seen from FIG. 5, the height of the intersection between the first side surface and the longitudinal corrugation 60 is level with the top of the longitudinal corrugation 60. The portion of the intersection 80 having the valley 84 is a side segment of the intersection 80, and the valley 84 is the top surface of the side segment. The intersection portion 80 having a top surface 81 and an elongated rib 82 is a body segment of the intersection portion 80. Two side segments are located on two sides of the body segment in the transverse direction.

[131] Referring to the above embodiments, it can be seen that the overall shape of the corrugated plate of the present disclosure is smooth and rigid, with relatively sharp deformations of the material at certain places, which not only ensures the overall strength and stability of the corrugated plate, but also provides better elasticity, contractility and tension.

[132] In FIG. 7-10 show a corrugated plate 100 in accordance with another preferred embodiment of the present disclosure. The corrugated plate 100 has a structure similar to that of the corrugated plate 500 in FIG. 1-6. In this embodiment, the crossing portion 40 also includes a top surface 41 and an elongated rib 44 extending from the top surface 41 to the body of the corrugated plate 10. The crossing portion 40 also has two ribs 441 that separately extend along the transverse corrugation 30 and are located symmetrically with respect to the longitudinal corrugation. 20. Each of the fins 441 includes a first segment, a middle segment, and a second segment that are connected in series. The first segment and the second segment are located respectively on two sides of the transverse corrugation 30, and the middle segment represents a partial boundary of the upper surface. The first segment and second segment of the rib 441, respectively, represent the ridges of the corresponding elongated rib 44.

[133] In addition, a pair of transverse end surfaces 42 of the intersection portion 40 are recessed relative to each other; and a pair of longitudinal end surfaces 43 of the intersection portion are recessed relative to each other. On the projection plane defined by the transverse direction D2 and the height direction, the projection profile of the apex of the intersection portion is composed of two straight line segments 411 intersecting at an obtuse angle. On the projection plane defined by the longitudinal direction D1 and the height direction, the projection profile of the crossing portion 40 has a dome-shaped shape 4121. The crossing portion 40 is provided with a dome-shaped protruding portion 412 protruding from the body of the crossing portion 40 at an end of the crossing portion 40 located directly above the transverse corrugation 30.

[134] Next, with reference to FIG. 10, the top surface of the intersecting portion 40 also has four profile boundary lines that define the top surface. Four profile boundary lines are connected in series between the four elongated ribs 44, and each of the four profile boundary lines is recessed towards the center of the top surface at its middle position. Among the four profile boundary lines, the two top surface projection profiles 45 located at the two ends of the top surface in the longitudinal direction have a recessed first radius of curvature, and the two top surface projection profiles 46 located at the two ends of the top surface in the transverse direction have a recessed second radius. curvature, and the first radius of curvature is less than the second radius of curvature. In one embodiment, as shown in FIG. 10, the first radius of curvature and the second radius of curvature may be very large such that each profile boundary line forms an approximately straight portion and the upper surface of the intersecting portion 40 is approximately a rectangle.

[135] To make material formation more controlled, a material removal core must be installed on the machine's punch during corrugated plate forming. The corrugated plate has a slight deformation in the longitudinal direction D1, thereby maximally maintaining the characteristics of the original material. At the same time, sharp deformation occurs in the transverse direction D2, so that the corrugated plate can have better elasticity and tensile strength.

[136] The corrugated plate shown in FIG. 1-10 can be used as a sealing layer of a storage container, and the structure of the storage container is shown in FIG. 11-13. The terms of direction and position related to a storage container mentioned in the present disclosure can be understood with reference to positions, orientations, etc. various components shown in FIG. 11-13. It should be particularly noted that the directional terms used to describe the bellows plate alone may not necessarily be the same as the directional terms used to describe a storage container with the bellows plate mounted on the storage container. For example, the inner side of a storage container is understood as the side in contact with the storage liquid, and the outer side is understood as the side away from the storage liquid.

[137] In FIG. 11 and 12 show that the wall of the storage container includes a base layer 400 and a sealing layer covering the inside of the base layer 400, the sealing layer being made of a corrugated plate in accordance with the above-described embodiments.

[138] The wall has a central portion and an annular portion. In one embodiment, the sealing layer includes a central section 310 and at least one annular section 320 located around the central section 310. Each annular section 320 includes a plurality of annular section sealing plates 3210 obtained by cutting a corrugated plate. A gap 350 is provided between adjacent blocks in each annular section, and the gap 350 may accommodate a first seal connector. For example, the first seal connector is positioned between circumferentially adjacent seal plates 3220 and secures both seal plates to the base layer 400. The center section 310 consists of a sectorial center seal plate 3110. In addition, the base layer has a center base layer section 420 and an annular base layer section. 410, consisting of a base layer plate 4110.

[139] In addition, there are at least two annular sections 320 that are arranged in series in a circle, and the sealing layer further includes a second annular section connector 340 located between adjacent annular sections 320 and securing adjacent annular sections to the base layer 400. In the figure three ring sections are shown, i.e. a first annular section 420a, a second annular section 420b, and a third annular section 420c. In other embodiments not shown in the figure, fewer or more annular sections may be provided.

[140] The transverse corrugations and longitudinal corrugations of all the sealing plates 3210 of the annular section respectively form the radial corrugations and circumferential corrugations of the annular section 320. The radial inner ends of a portion of the radial corrugations 380 extend towards the central section 310, and the radial inner ends of another portion of the radial corrugations 360 are located in the middle part of the annular section 320 and away from the central section 310. This configuration avoids excessively large circumferential lengths (for example, S1 and S2 shown in the figure) between adjacent radial corrugations at radially outer positions in the annular portion, which leads to insufficient stability and ductility these provisions. Adding another radial corrugation between such adjacent radial corrugations can ensure 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 a pair of adjacent radial bellows of the radial bellows portion 380 is X, the maximum circumferential distance between circumferentially adjacent radial bellows in the annular section may be from 1.5X to 5X. In one embodiment, a sealing end cap 370 is installed at the inner radial end of each of the radial corrugations.

[141] In FIG. 13 shows a rectangular wall. The sealing layer includes sealing plates 520 arranged in an array, wherein the sealing plates adjacent to each other along a first horizontal direction are connected and sealed by a first seal connector 5210, and the sealing plates adjacent to each other along a second horizontal direction are sealed and sealed. connected by a second seal connector 5220. The base layer 510 also includes base layer plates arranged in an array, with a gap 5110 between adjacent base layer plates, the corrugation plate has a corrugation extending in the same direction as each gap, and the corrugation covers the gap.

[142] As can be seen from the above embodiments, the sealing layers of the storage container of the present disclosure can be made from standard parts of the correct shape without requiring special shaped segments, and the standard parts can be simply cut from rectangular plates, which simplifies processing and saves materials . The sealing layers of the present disclosure have good flatness, cause little damage to the structure of the thermal insulation layers, and can reduce the effect of the sealing layers on the strength of the thermal insulation box. The structure of the sealing layers of the present disclosure is such that the sealing layers can be made thinner, so that the overall thermal conductivity of the storage container can be reduced to improve the heat preservation effect. In addition, sealing connectors serving as universal parts can also be used between adjacent standard parts, and some sealing connectors of the present disclosure also have a certain thermal expansion and contraction, which can provide a certain degree of cold shrinkage deformation to the sealing layers. In addition, the use of the sealing connectors of the present disclosure does not require additional processing operations such as rolling edges on the sealing layer block plate, which can improve the flatness of the sealing layers and achieve a sealing effect. The sealing layer of the bottom wall has no relief parts, so that the thermal insulation layer laid on the sealing layer does not need slots on the back side, which improves the structural strength of the thermal insulation layer. The storage container of the present disclosure is a liquefied gas storage container for a marine equipment or a land-based cryogenic frozen liquid device.

[143] The above-mentioned corrugated plates can also be replaced with another corrugated plate shown in FIG. 15-19. The corrugated plate 100' includes a flat corrugated plate body 10', a transverse corrugation 30' and a longitudinal corrugation 20' formed on the corrugated plate body 10', and a projecting cross portion 40' at the intersection of the longitudinal corrugation 20' and the transverse corrugation 30'. The longitudinal corrugation 20' of the corrugated plate 100' refers to the corrugation extending along the longitudinal direction D1, and the transverse corrugation 30' refers to the corrugation extending along the transverse direction D2. The longitudinal dimension of the transverse corrugation 30' gradually decreases in the direction from the lower side to the upper side, and the transverse dimension of the longitudinal corrugation 20' gradually decreases in the direction from the lower side to the upper side. In addition, the height of the longitudinal corrugation 20' is less than the height of the transverse corrugation 30', and the maximum transverse dimension of the longitudinal corrugation 20' is less than the maximum longitudinal dimension of the transverse corrugation 30'. In other words, the transverse corrugation is a large corrugation, and the longitudinal corrugation is a small corrugation. The height of each of the longitudinal corrugation 20' and the transverse corrugation 30' refers to the distance between the uppermost end of the corrugation and the corrugated plate body 10' in the height direction D3.

[144] In this embodiment, the transverse corrugation 30' and the longitudinal corrugation 20' are circular corrugations in the shape of an arc. The projection profiles of the transverse corrugation 30' and the longitudinal corrugation 20' are formed in the form of a circular arc, and their upper ends are formed in the form of circular arcs without edges or corners, and the sides have radian walls. In other embodiments not shown in the figure, the transverse corrugation and/or longitudinal corrugation may be formed in the form of triangular corrugations. For example, in a corresponding cross-section (cross-section perpendicular to the direction of elongation of the corrugation) of the corrugation, the cross-sectional profile of the corrugation is formed in the form of an uneven triangle.

[145] In this embodiment, the intersecting portion 40' includes a body segment 41', side segments 42', and a connecting segment 43' located between the body segments 41' and each of the side segments 42'. The body segment 41' includes a smooth central top surface 411' and four elongated ribs 412' extending from the central top surface 411' to the corrugated plate body 10', with the central top surface 411' blending into elongated ribs 412'. The general extension direction of each of the elongated ribs 412' intersects the transverse direction D2, the longitudinal direction D1 and the height direction D3. It should be noted that the general expansion direction of the elongated rib 412' refers to the coarse expansion direction of the elongated rib 412' extending from the central top surface 411' to the corrugated plate body 10'. The height of the central upper surface 411' is greater than the height of the transverse corrugation 30'.

[146] Each of the elongated ribs 412' has a ridge 4121' extending from its top to its bottom and formed in a portion of the elongated rib 412'. There is no obvious boundary between the elongated rib 412' and the connecting segment 43'. However, since the ridge 4121' is adjacent to the longitudinal corrugation 20', it can be clearly seen that the ridge 4121' is part of the elongated rib 412', with a gap between the ridge 4121' and the connecting segment 43'. The width of each ridge 4121' remains constant from top to bottom. Each ridge extends downward from the top of the intersecting portion 40'. By "ridge width" herein is meant the width of each ridge with formed branches, and each ridge is roughly formed into a ribbed structure that abuts the longitudinal corrugation 20'. It should be further noted that "ridge width" refers to the dimension W of the ridge 4121' in a direction perpendicular to the direction of its elongation. The ridge 4121' has a small width because it is roughly formed into a ridged structure. The direction of extension of the ridge 4121' is approximately parallel to the direction of extension of the elongated ribs 412' where it is located. In one embodiment, a groove 44' is provided between the ridge 4121' and the side segment 42', parallel to the ridge 4121' and extending from the top to the bottom of the elongated rib 412'. The expansion direction of the groove 44' is represented by D4. In another embodiment, the minimum longitudinal dimension W1 of the upper portion of the connecting segment 43' is equal to or close to the width W of the ridge 4121'.

[147] Two side segments 42' are located at two ends of the body segment 41' in the transverse direction, respectively, and the height of the side segment 42' is less than the height of the transverse corrugation 30' and the height of the body segment 41'. The side segments 42' separately extend along the longitudinal direction and protrude from the longitudinal corrugation 30' in the longitudinal direction, so that the side segments 42' have projections 422' protruding from the transverse corrugation 30'. In one embodiment, the top portion 421' of the side segment 42' defines a depression extending along the longitudinal direction D1. The longitudinal dimension at the middle position 431' at the top of the connecting segment 43' is laterally smaller than the longitudinal dimension of the portion 432' where the top of the connecting segment 43' is connected to the side segment 42', and the portion 433' connecting the top of the connecting segment 43' to the body segment 41'. That is, the upper portion of the connecting segment 43' is tapered in the transverse direction, which is thinner in the middle position and widens at the junctions with the body segment 41' and the side segment 42'.

[148] On the projection plane defined by the transverse direction D2 and the height direction D3, the upper surfaces of the body segment 41' and the connecting segment 43' are a straight portion 4101' and are parallel to the body of the corrugated plate 10'. In one embodiment, the length of the straight section 4101' may be 2-3 times the maximum transverse dimension of the longitudinal corrugation 20'.

[149] In one embodiment, the intersecting 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 together at the central positions in the transverse direction than at the two extreme positions in the transverse direction, so that the second boundary profile 4112' and the fifth boundary profile 4115' form arc lines that are recessed towards each other. The pair of side surfaces 45' have the same recess shape and the same radius of curvature as the boundary profiles (second boundary profile 4112' and fifth boundary profile 4115') on their respective upper sides. Moreover, the distance between the center positions on the pair of side surfaces 45' in the height direction is greater than the distance between the lower ends of the pair of side surfaces 45'. The distance between the central positions of the pair of side surfaces 45' in the height direction D3 is d2, and the distance between the lower ends of the pair of side surfaces 45' is d1, with d2 > d1.

[150] The central top surface of the intersection portion in this embodiment also has several preferred configurations. The central top surface includes six boundary profiles, each of which is connected between adjacent elongated ribs 412' or between an elongated rib 412' and a connecting segment located adjacent to each other. For example, each of the first boundary profile 4111', the third boundary profile 4113', the fourth boundary profile 4114' and the sixth boundary profile 4116' is located between the elongated rib 412' and the connecting segment adjacent to each other, and each of the second boundary profile 4112' and a fifth boundary profile 4115' is located between adjacent elongated ribs 412'. Each of the boundary profiles is recessed toward the center of the central top surface, and all boundary profiles have the same radius of curvature and/or the same length. In one embodiment, 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 transverse dimension of the top surface (for example, the distance between the intersection of the first boundary profile 4111' and the sixth boundary profile 4116' and the intersection third boundary profile 4113' and fourth boundary profile 4114'). The upper portion 421' of the side segment 42' forms a four-pointed star shape when viewed from top to bottom.

[151] The corrugated plate in FIG. 15-19 also applies to the wall layer of the storage container in FIG. 11-14. The corrugated plate shown in FIG. 15-19 may also have some deformation. For example, the direction of elongation of the body segment of the elongated fins may be different from the direction of elongation of the tail segment. In a top view of the corrugated plate, the body portion of each elongated rib extends along a direction intersecting both the longitudinal and transverse directions, and the lower segment of each elongated rib extends along the transverse direction. In another example, the top surface may have other dimensional options, where the minimum transverse dimension of the top surface may be set to be more than twice the minimum longitudinal dimension of the top surface.

[152] The above-mentioned corrugated plate has complex deformations at the intersection portion, but various deformations are not sharp, which ensures good tensile strength in multiple directions and achieves good strength and stability at the intersection portion. In addition, although there are many deformations in the intersection part, the profile of each deformation is smooth, and the overall shape is rigid, smooth and easy to form.

[153] Various variations and combinations of the above embodiments are also included within the scope of protection of the present disclosure.

Claims (28)

1. A corrugated plate for a liquefied gas storage tank of a transport device, including: a corrugated plate body, a longitudinal corrugation and a transverse corrugation formed on the corrugated plate body, and an intersection section at the intersection of the longitudinal corrugation and the transverse corrugation, wherein the height of the longitudinal corrugation is less than the height of the transverse corrugation corrugation; and the maximum transverse dimension of the longitudinal corrugation is less than the maximum longitudinal dimension of the transverse corrugation, wherein the intersection portion includes a smooth central top surface and four elongated ribs extending from the central top surface to the corrugated plate body; the central upper surface smoothly passes into elongated ribs; where each of the elongated ribs intersects the transverse corrugation, the longitudinal corrugation and is made in the height direction perpendicular to the body of the corrugated plate; and the height of the intersection section is greater than the height of the longitudinal corrugation and the height of the transverse corrugation; wherein the central upper surface and the four elongated ribs at least partially define a body segment at the intersection site; the intersection portion further includes two side segments; two side segments are located at two ends of the body segment in the transverse direction, respectively; and the height of each of the side segments is less than the height of the transverse corrugation and the height of the body segment, each of the elongated ribs has a ridge extending from its upper part to its lower part; the width of each ridge remains the same from top to bottom; and a groove is provided between the ridge and the side segment, parallel to the ridge and extending from the top to the bottom of the elongated rib. 2. Corrugated plate according to claim 1, characterized in that the side segment is made along the longitudinal direction and has a protruding part protruding from the transverse corrugation in the longitudinal direction. 3. Corrugated plate according to claim 2, characterized in that the upper part of the side segment forms a groove along the longitudinal direction. 4. Corrugated plate according to claim 1, characterized in that the intersection section additionally includes a connecting segment between the body segment and the side segment; and the upper part of the connecting segment is made with a narrowing in the transverse direction and has a minimum longitudinal dimension in the middle part. 5. Corrugated plate according to claim 1, characterized in that the width of each ridge is the same in the direction from top to bottom. 6. Corrugated plate according to claim 5, characterized in that the intersection section includes a connecting segment between the body segment and the side segment; and the minimum longitudinal dimension of the upper part of the connecting segment is equal to or close to the width of the ridge. 7. The corrugated plate according to claim 6, characterized in that on the projection plane determined by the transverse direction and the height direction, the upper surfaces of the body segment and the connecting segment are a straight section and are parallel to the body of the corrugated plate. 8. Corrugated plate according to claim 4, characterized in that the central upper surface includes six boundary profiles; each of the boundary profiles is recessed towards the center of the central upper surface; and all boundary profiles have the same radius of curvature and/or the same length. 9. Corrugated plate according to claim 1, characterized in that the longitudinal dimension of the central upper surface is greater than the transverse dimension of the central upper surface. 10. Corrugated plate according to claim 2, characterized in that the intersection part additionally includes a pair of side surfaces extending from the central upper surface to the longitudinal corrugation; a pair of side surfaces has the same recess shape and the same radius of curvature as the boundary profiles on the corresponding upper sides; and the distance between the central positions of the pair of side surfaces in the height direction is greater than the distance between the lower ends of the pair of side surfaces. 11. Corrugated plate according to claim 1, characterized in that the corresponding profiles of the end protrusions of the transverse corrugation and longitudinal corrugation have the shape of a circular arc. 12. Corrugated plate according to claim 1, characterized in that the upper part of the side segment is made in the form of a four-pointed star when viewed from top to bottom. 13. The corrugated plate according to claim 1, characterized in that in the top view of the corrugated plate, part of the body of each of the elongated ribs is made along a direction intersecting both the longitudinal and transverse directions; and the lower segment of each of the elongated ribs is made along the transverse direction. 14. Corrugated plate according to claim 1, characterized in that the minimum transverse dimension of the upper surface is more than twice the minimum longitudinal dimension of the upper surface. 15. A container for storing liquefied gas, the wall of which consists of a base layer and a sealing layer located on the inside of the base layer, wherein the sealing layer includes a corrugated plate according to any one of claims. 1-14. 16. Storage container according to claim 15, characterized in that the sealing layer includes: central section; And at least one annular section located around the central section, each of the annular sections including: a plurality of sealing plates obtained by cutting a corrugated plate; And a first sealing connector located between circumferentially adjacent sealing plates and securing both sealing plates to the base layer. 17. The storage container according to claim 16, characterized in that it contains at least two annular sections arranged in series around the circumference, and the sealing layer further includes a second annular section connector located between adjacent annular sections and fixing adjacent annular sections to the base layer . 18. The storage container according to claim 17, characterized in that the transverse corrugations and longitudinal corrugations of all the sealing plates of the annular section respectively form radial corrugations and circumferential corrugations of the annular section, where the radial inner ends of the radial corrugations are located at the central section; the radial inner ends of the other part of the radial corrugations are located in the middle part of the annular section at a distance from the central section; the maximum circumferential distance between adjacent radial corrugations is within a predetermined range; and a sealing end cap is mounted on a radial inner end of each of the radial bellows. 19. The storage container according to claim 15, characterized in that the wall is a rectangular wall; the sealing layer includes sealing plates configured in an array, adjacent to each other along a first horizontal direction, connected and sealed by a first sealing connector; and sealing plates adjacent to each other along a second horizontal direction are sealed and connected by a second sealing connector. 20. The storage container according to claim 19, wherein the base layer also includes base layer plates arranged in an array with a gap between adjacent base layer plates; each of the sealing plates located in the array has a corrugation made in the same direction as each gap; and the corrugation closes the gap. 21. The storage container according to claim 15, characterized in that it is a container for storing liquefied gas for marine equipment or land-based equipment for cryogenic frozen liquid.