A corrugated plate of a liquefied gas storage tank and a liquefied gas storage tank

Abstract

The present application provides a corrugated plate of a liquefied gas storage tank and a liquefied gas storage tank, wherein the corrugated plate comprises a corrugated plate body; transverse corrugations formed on the corrugated plate body; longitudinal corrugations formed on the corrugated plate body and comprising first longitudinal corrugations and second longitudinal corrugations respectively located on opposite sides of the transverse corrugations; reinforcing ribs respectively formed on the transverse corrugations, the first longitudinal corrugations and the second longitudinal corrugations; and an intersection portion formed at the intersection of the transverse corrugations, the first longitudinal corrugations and the second longitudinal corrugations. The overall strength and stability of the corrugated plate of the present application are relatively high. At the same time, the reinforcing ribs formed on the corrugations increase the surface area of ​​the corrugated plate in contact with the liquefied gas, increase the local cross-sectional area on the corrugations, and further enhance the strength and rigidity of the corrugations and the corrugated plate.

Description

Technical Field

[0001] The present application belongs to the technical field of liquefied gas storage equipment, and in particular relates to corrugated plates and liquefied gas storage tanks for liquefied gas storage tanks on land and on ships. Background Art

[0002] At present, the storage of liquefied gas in my country mainly adopts tank storage, which is divided into traditional fully contained tanks and emerging membrane tanks according to the existing tank types. Fully contained tanks are welded with 9% nickel steel plates, while membrane tanks are welded with corrugated stainless steel plates; compared with fully contained tanks, membrane tanks use corrugated plate units to weld, so as to avoid weld stress, and the corrugations on the corrugated plates can better absorb and release energy when the tank is injected and output liquefied gas. In recent years, the domestic new energy vehicle industry has developed strongly, which is particularly important for the exploration and application of many new energy materials; liquid hydrogen, as a colorless, odorless, high-energy, low-temperature liquid fuel, is a liquid obtained by cooling hydrogen. In the low-temperature storage and transportation of liquid hydrogen, the most ideal storage carrier is also a membrane tank. The difficulty in the construction of membrane tanks lies in its complex design requirements, strict material standards, safety and reliability, environmental adaptability, regulatory compliance, and cost control. With the development of technology and the accumulation of experience, these challenges are gradually being overcome. Therefore, with the continuous development of the new energy industry, more new energy sources will be explored and discovered. In this process, membrane storage tanks will have greater application prospects in the storage and transportation of many liquefied gases in the future.

[0003] The corrugated plates that make up the membrane tank need to maintain good airtightness and anti-deformation ability. As the part that directly contacts the liquefied gas, the continuity and airtightness of the welding between the corrugated plates must be guaranteed, and the working conditions under specific environmental requirements must be met, that is, they must have high environmental adaptability; therefore, the structure, shape and forming quality of the corrugated plates are particularly important. However, the corrugation size of the existing corrugated plates, the smoothness of the corrugation intersection and the uniformity in the thickness direction, as well as the overall strength and reliability of the corrugated plates need to be further improved and strengthened.

[0004] Therefore, providing a corrugated plate that can alleviate or solve the above problems to a certain extent is an issue that needs to be urgently addressed. Summary of the invention

[0005] In view of the above-mentioned technical problems existing in the prior art, the embodiments of the present application provide a corrugated plate of a liquefied gas storage tank and a liquefied gas storage tank.

[0006] The technical solution adopted in the embodiment of the present application is: a corrugated plate of a liquefied gas storage tank, comprising a corrugated plate body, and further comprising:

[0007] transverse corrugations formed on the corrugated sheet body;

[0008] Longitudinal corrugations formed on the corrugated plate body and comprising first and second longitudinal corrugations respectively located on opposite sides of the transverse corrugations;

[0009] reinforcing ribs, which are respectively formed on the transverse corrugations, the first longitudinal corrugations and the second longitudinal corrugations;

[0010] An intersection portion is formed at the intersection of the transverse corrugations, the first longitudinal corrugations and the second longitudinal corrugations.

[0011] In an optional embodiment, the intersection portion includes a smooth top surface and four draw ribs extending from the smooth top surface to the corrugated plate body, wherein each draw rib extends from the smooth top surface and smoothly transitions, and continues to extend in the transverse direction, the longitudinal direction and the height direction, and smoothly intersects with the transverse corrugations, the longitudinal corrugations and the corrugated plate body, and in the process of the draw rib extending from the smooth top surface to the corrugated plate body, the cross-sectional size of the plane defined by the transverse direction and the longitudinal direction gradually increases.

[0012] In an optional embodiment, the corrugated plate body is mirror-symmetrical about a plane defined by the transverse direction and the height direction at the center line of the transverse corrugation ridge at the top of the transverse corrugation, and the outer normals of the two symmetrical parts of the plane form a certain angle; the outer sides of the two symmetrical parts of the plane are tilted upward at a certain angle.

[0013] In an optional embodiment, the cross-sectional shape of the transverse corrugation obtained by taking the plane defined by the longitudinal direction and the height direction as the cross-section is a circular arch; the cross-sectional shapes of the first longitudinal corrugation and the second longitudinal corrugation obtained by taking the plane defined by the transverse direction and the height direction as the cross-section are both circular arches; and / or

[0014] The arch width of the transverse corrugation, the arch width of the first longitudinal corrugation and the arch width of the second longitudinal corrugation are equal; and / or

[0015] The height dimension of the transverse corrugation, the height dimension of the first longitudinal corrugation and the height dimension of the second longitudinal corrugation are equal; and / or

[0016] The arch width dimension is twice the arch height dimension; and / or

[0017] The arc radii of the transverse corrugations, the first longitudinal corrugations and the second longitudinal corrugations at their respective top ridges are equal, and the arc radii on both sides of their respective arch bottom ends are equal, and the cross-sectional dimensions of the transverse corrugations, the first longitudinal corrugations and the second longitudinal corrugations all show a gradual contraction from bottom to top in the height direction.

[0018] In an optional embodiment, first reinforcing ribs are respectively provided on the portions of the transverse corrugations located on both sides of the intersection portion, and the first reinforcing ribs are formed by the top portions of the transverse corrugations being partially depressed downwards;

[0019] A second reinforcing rib is provided on the first longitudinal corrugation, and the second reinforcing rib is formed by a top portion of the longitudinal corrugation being partially depressed downward;

[0020] The second longitudinal corrugations are provided with third reinforcing ribs, and the third reinforcing ribs are formed by the top ends of the second longitudinal corrugations being partially recessed downwards.

[0021] In an optional embodiment, the bottom surfaces of the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are all arc surfaces, and the curvatures of the three are equal.

[0022] In an optional embodiment, the vertical distance from the forming axis of the first reinforcing rib formed on the transverse corrugation to the plane where the smooth top surface is located, the vertical distance from the forming axis of the second reinforcing rib formed on the first longitudinal corrugation to the plane where the smooth top surface is located, and the vertical distance from the forming axis of the third reinforcing rib formed on the second longitudinal corrugation to the plane where the smooth top surface is located are all equal and are constant values; and / or

[0023] The forming axes of the two first reinforcing ribs formed on the transverse corrugations are in a first horizontal plane and are parallel to the smooth top surface, the forming axes of the second reinforcing ribs formed on the first longitudinal corrugations and the forming axes of the third reinforcing ribs formed on the second longitudinal corrugations are in a second horizontal plane and are parallel to the smooth top surface, and the first horizontal plane and the second horizontal plane are not coplanar.

[0024] In an optional embodiment, the lateral dimension of the smooth top surface is equal to its longitudinal dimension.

[0025] In an optional embodiment, the smooth top surface has four contour lines defining the smooth top surface, each of the four contour lines is concave toward the center of the smooth top surface at its center position, and the four contour lines have the same concave curvature.

[0026] In an optional embodiment, the minimum lateral dimension of the smooth top surface is equal to its minimum longitudinal dimension.

[0027] In an alternative embodiment, the smooth top surface and the first side surface connected to the transverse corrugation are perpendicular to the projection plane defined by the transverse direction and the longitudinal direction; the smooth top surface and the second side surface connected to the first longitudinal corrugation and the second longitudinal corrugation are perpendicular to the projection plane defined by the transverse direction and the longitudinal direction.

[0028] In an alternative embodiment, the transition fillet radius at the intersection of the smooth top surface and the first side surface and the second side surface, the transition fillet radii of the four draw beads respectively with the transverse corrugation, the first longitudinal corrugation and the second longitudinal corrugation, and the transition fillet radius at the intersection of the four draw beads and the corrugated plate body are all equal.

[0029] In an alternative embodiment, the cross-section of the intersection portion at the center of the intersection portion in the plane defined by the transverse direction and the height direction is in a "J" shape, and the cross-section of the intersection portion at the center of the intersection portion in the plane defined by the longitudinal direction and the height direction is in a "J" shape.

[0030] In an alternative embodiment, the intersection portion is symmetric about the plane defined by the longitudinal direction and the height direction, and symmetric about the plane defined by the transverse direction and the height direction; and / or

[0031] The two first reinforcing ribs formed on the transverse corrugation are symmetric about the plane defined by the longitudinal direction and the height direction; and / or

[0032] The second reinforcing rib formed on the first longitudinal corrugation and the third reinforcing rib formed on the second longitudinal corrugation are symmetric about the plane defined by the transverse direction and the height direction.

[0033] A liquefied gas storage tank includes the corrugated plate described in any of the above embodiments.

[0034] Compared with the prior art, the beneficial effects of the embodiments of the present application are as follows: The overall shape of the corrugated plate in the embodiments of the present application is smooth, and the shape performance is regular macroscopically, ensuring the strength and stability of the corrugated corner plate. The corrugated plate fully realizes its structural role in the liquefied gas storage tank, providing a feasible implementation method for the airtight connection of the liquefied gas storage tank; at the same time, it also meets the performance requirements under its working environment conditions to a great extent.

[0035] It should be understood that the foregoing general description and the following detailed description are both exemplary and explanatory and are not intended to limit the present application.

[0036] The overview of various implementations or examples of the technology described in the present application is not a complete disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0038] Figure 1 This is a three-dimensional view of the corrugated plate according to an embodiment of the present application.

[0039] Figure 2 It is a projection diagram of the corrugated plate according to the embodiment of the present application in a projection plane defined by the longitudinal direction and the height direction.

[0040] Figure 3 It is a projection diagram of the corrugated plate according to the embodiment of the present application within a projection plane defined by the transverse direction and the height direction.

[0041] Figure 4 for Figure 1 Cross-sectional view taken along line AA.

[0042] Figure 5 for Figure 1 Cross-sectional view taken along line BB in FIG.

[0043] Figure 6 This is a top view of the corrugated plate according to an embodiment of the present application.

[0044] Figure 7 for Figure 6 A partial enlarged view of the intersection part.

[0045] Figure 8 for Figure 6 Cross-sectional view taken along line CC.

[0046] Fig. 9 for Figure 6 A cross-sectional view taken along line DD in FIG. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiment of the present application clearer, the technical solution of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. "First", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0049] In order to keep the following description of the embodiments of the present application clear and concise, the present application omits detailed descriptions of known functions and known components.

[0050] The embodiment of the present application provides a corrugated plate 200 for assembling a liquefied gas tank. Figure 1-Figure 9 A schematic diagram of a corrugated plate 200 according to a preferred embodiment of the present application is shown.

[0051] First of all, it should be noted that the directional terms and position terms mentioned in this application are only exemplary descriptions and not restrictive descriptions. The position and orientation descriptions of the components should be understood as relative positions rather than absolute positions. Figure 1-Figure 9 The positions and directions of the components shown are understood; in the position description, the "lateral direction" is represented by D1, the "longitudinal direction" is represented by D2, and the "height direction" is represented by D3, and the three directions are perpendicular to each other.

[0052] First reference Figure 1 The corrugated plate 200 includes a corrugated plate body 20, transverse corrugations 30, longitudinal corrugations, reinforcing ribs and an intersection 60. The transverse corrugations 30 are formed on the corrugated plate body 20. The longitudinal corrugations include first longitudinal corrugations 40 and second longitudinal corrugations 50, which are both formed on the corrugated plate body 20 and are respectively located on opposite sides of the transverse corrugations 30. The reinforcing ribs are respectively formed on the transverse corrugations 30, the first longitudinal corrugations 40 and the second longitudinal corrugations 50. The intersection 60 is formed at the intersection of the transverse corrugations 30, the first longitudinal corrugations 40 and the second longitudinal corrugations 50.

[0053] It should be noted that, when describing the corrugated plate 200, the transverse direction D1 is represented as the extension direction of the transverse corrugation 30, the longitudinal direction D2 is represented as the direction perpendicular to the transverse direction D1 at the smooth top surface 61 of the intersection portion 60, and the height direction D3 is represented as the direction perpendicular to the smooth top surface 61 of the intersection portion 60. The intersection portion 60 is higher than the transverse corrugation 30, the first longitudinal corrugation 40 and the second longitudinal corrugation 50 in the height direction D3.

[0054] like Figure 7 The top view of the intersection portion 60 shown in the figure comprises a smooth top surface 61 and four draw ribs 62 extending from the smooth top surface 61 to the corrugated plate body 20, wherein each draw rib 62 extends from the smooth top surface 61 and smoothly transitions, and continues to extend in the transverse direction D1, the longitudinal direction D2 and the height direction D3, and smoothly intersects with the transverse corrugation 30, the first longitudinal corrugation 40, the second longitudinal corrugation 50 and the corrugated plate body 20, and in the process of the draw rib 62 extending from the smooth top surface 61 to the corrugated plate body 20, the cross-sectional size of the plane defined by the transverse direction D1 and the longitudinal direction D2 gradually increases.

[0055] In some embodiments, the corrugated board body 20 is mirror-symmetrical about a plane defined by the transverse direction D1 and the height direction D3 at the center line of the transverse corrugation 30 ridge at the top of the transverse corrugation 30, and the two symmetrical planes are not in the same plane, that is, the outer normals of the two symmetrical planes are at a certain angle. The outer sides of the two symmetrical planes are tilted upward at a certain angle, such as Figure 2 and Figure 5 By designing the outer side of the corrugated plate body 20 to be tilted, when assembling into a liquefied gas storage tank, adjacent corrugated plates 200 can overlap each other to form a nearly circular tank body.

[0056] It can be understood that the portions of the corrugated plate body 20 located on opposite sides of the transverse corrugation 30 are gradually tilted from the transverse corrugation 30 to the direction away from the transverse corrugation 30, so that the first longitudinal corrugation 40 and the second longitudinal corrugation 50 are not on the same straight line, but there is a certain angle between them. The first longitudinal corrugation 40 and the second longitudinal corrugation 50 are mirror-symmetrical with respect to the transverse corrugation 30.

[0057] like Figures 2 to 5As shown, the cross-sectional shape of the transverse corrugation 30 obtained by the plane defined by the longitudinal direction D2 and the height direction D3 is a circular arch. The cross-sectional shapes of the first longitudinal corrugation 40 and the second longitudinal corrugation 50 obtained by the plane defined by the transverse direction D1 and the height direction D3 are both circular arches; and / or, the arch width W1 of the transverse corrugation 30, the arch width W2 of the first longitudinal corrugation 40, and the arch width W3 of the second longitudinal corrugation 50 are equal, that is, W1=W2=W3, see Figure 3 , Figure 8 and Fig. 9 ; and / or, the height dimension H1 of the transverse corrugation 30, the height dimension H2 of the first longitudinal corrugation 40 and the height dimension H3 of the second longitudinal corrugation 50 are equal, that is, H1=H2=H3, see Figure 8 and Fig. 9 ; and / or, the arch width is twice the arch height; and / or, the arc radius of the transverse corrugation 30, the first longitudinal corrugation 40 and the second longitudinal corrugation 50 at their respective top ridges is equal, and the arc radius on both sides of their respective arch bottoms is equal, and the cross-sectional dimensions of the transverse corrugation 30, the first longitudinal corrugation 40 and the second longitudinal corrugation 50 are gradually contracted from bottom to top in the height direction D3. Such an arrangement can make the stress change and strain distribution change of the corrugated plate 200 in the optimal state.

[0058] In some embodiments, Figure 1 As shown, the transverse corrugations 30 are provided with first reinforcing ribs 31 on the parts on both sides of the intersection 60, and the first reinforcing ribs 31 are formed by the top of the transverse corrugations 30 being partially depressed downward. The first longitudinal corrugations 40 are provided with second reinforcing ribs 41, and the second reinforcing ribs 41 are formed by the top of the first longitudinal corrugations 40 being partially depressed downward. The second longitudinal corrugations 50 are provided with third reinforcing ribs 51, and the third reinforcing ribs 51 are formed by the top of the second longitudinal corrugations 50 being partially depressed downward.

[0059] Further, such as Figure 4 and Figure 5 As shown, the radius of the fillet 311 of the first reinforcing rib 31, the fillet 411 of the second reinforcing rib 41, and the fillet 511 of the third reinforcing rib 51 are equal. The bottom surfaces of the first reinforcing rib 31, the second reinforcing rib 41, and the third reinforcing rib 51 are all arc surfaces, and the curvatures of the three are equal. The fillet radius of the first reinforcing rib 31, the second reinforcing rib 41, and the third reinforcing rib 51 are the same. On the basis of ensuring the consistency of the external dimensions of the four reinforcing ribs, and in the forming process of the corrugated plate 200, the forming of the reinforcing ribs will not have a significant impact on the flow of the surrounding sheet material.

[0060] In some embodiments, the vertical distance from the forming axis of the first reinforcing rib 31 formed on the transverse corrugation 30 to the plane where the smooth top surface 61 is located, the vertical distance from the forming axis of the second reinforcing rib 41 formed on the first longitudinal corrugation 40 to the plane where the smooth top surface 61 is located, and the vertical distance from the forming axis of the third reinforcing rib 51 formed on the second longitudinal corrugation 50 to the plane where the smooth top surface 61 is located are all equal and are constant values, such as 150 mm. The forming axes of the two first reinforcing ribs 31 formed on the transverse corrugation 30 are in the first horizontal plane and parallel to the smooth top surface 61, the forming axes of the second reinforcing rib 41 formed on the first longitudinal corrugation 40 and the forming axes of the third reinforcing rib 51 formed on the second longitudinal corrugation 50 are in the second horizontal plane and parallel to the smooth top surface 61, and the first horizontal plane and the second horizontal plane are not coplanar. Among them, the so-called forming axis refers to the axis of the circle where the bottom arc of the reinforcing rib is located. On the basis of ensuring that the vertical distances from the axes of the bottom arcs of the four reinforcing ribs to the smooth top surface 61 are equal, the reinforcing ribs formed on the corrugations form the same stiffness constraints on the corrugations; at the same time, it is more beneficial to ensure the stability of the shape of the middle intersection part 60 after forming.

[0061] The embodiment of the present application improves the rigidity and strength of the corrugations on the corrugated plate 200 after forming by providing four reinforcing ribs on the transverse and longitudinal corrugations, thereby increasing the surface area of ​​the tank body as a whole for absorbing and releasing energy after assembly; and when injecting liquefied gas into and out of the tank body, the four reinforcing ribs further enhance the energy buffering effect of the corrugated plate 200; at the same time, the four reinforcing ribs formed on the transverse and longitudinal corrugations change the original cross-sectional shape of the corrugations, increase the cross-sectional area of ​​the sheet material and the local thickness, and thereby improve the bearing capacity of the corrugated plate 200, that is, under the same external force, reduce the stress value borne by the corrugations; while strengthening the rigidity and strength of the corrugations on the corrugated plate 200, the four reinforcing ribs further restrict the deformation of the intersection portion 60, that is, the intersection portion 60 is more stable and less prone to deformation after forming. Figure 2 and Figure 3 As shown, the lateral dimension W3 of the smooth top surface 61 is equal to the longitudinal dimension W4. Figure 6 and Figure 7 As shown, the smooth top surface 61 has four contour lines 68 defining the top surface, each of the four contour lines 68 is concave toward the center of the smooth top surface 61 at its center position, and the concave curvature radius of the four contour lines 68 is the same. Figure 7The minimum transverse dimension W5 of the smooth top surface 61 is equal to the minimum longitudinal dimension W6. In this way, the overall shape is fuller and more beautiful; at the same time, it is beneficial to the stability of the shape of the intersection 60 in the middle; and, the smooth top surface 61 is a square, so the constraint of the smooth top surface 61 on the surrounding sheet materials is more uniform, so that the stress distribution of the middle intersection 60 of the corrugated plate 200 is more uniform.

[0062] like Figure 2 and Figure 3 As shown, the projection of the smooth top surface 61 of the intersection portion 60 in the projection plane defined by the transverse direction D1 and the height direction D3 is a straight line 63; the projection in the projection plane defined by the longitudinal direction D2 and the height direction D3 is a straight line 64, and the lengths of the two straight lines are the transverse dimension W3 and the longitudinal dimension W4 of the smooth top surface 61. Ensure that the smooth top surface 61 of the middle intersection portion 60 is a horizontal plane, and then ensure that the horizontal plane is parallel to the plane constrained by the forming axis of the arc surface at the bottom of each reinforcing rib.

[0063] In some embodiments, Figure 1 As shown, the first side surface 65 connected with the smooth top surface 61 and the transverse corrugation 30 is perpendicular to the projection surface defined by the transverse direction D1 and the longitudinal direction D2; the second side surface 66 connected with the smooth top surface 61 and the first longitudinal corrugation 40 and the second longitudinal corrugation 50 is also perpendicular to the projection surface defined by the transverse direction D1 and the longitudinal direction D2. The stability of the intersection part 60 in the middle during the forming process and the stability of the shape of the intersection part 60 after forming are ensured.

[0064] Optionally, the first side surface 65 and the second side surface 66 may also be concave in a macroscopic manner, and the curvature radii of the two surfaces are equal.

[0065] The transition fillet radius at the intersection of the smooth top surface 61 of the intersection portion 60 and the first side surface 65 and the second side surface 66, the transition fillet radius of the four draw ribs 62 of the intersection portion 60 and the transverse corrugation 30, the first longitudinal corrugation 40 and the second longitudinal corrugation 50, and the transition fillet radius at the intersection of the four draw ribs 62 of the intersection portion 60 and the corrugated plate body 20 are all equal. Therefore, from a macroscopic point of view, the intersection portion 60 has smooth transitions at each curved surface at the intersection, and the overall appearance is smooth and fluent, which largely ensures the surface quality of the component.

[0066] like Figure 4 and Figure 5As shown, the intersection part 60 of the corrugated plate 200 has a "Ji" shape in the first cross-section 610 at the center of the intersection part 60 in the plane defined by the transverse direction D1 and the height direction D3, and the intersection part 60 has a "Ji" shape in the second cross-section 611 at the center of the intersection part 60 in the plane defined by the longitudinal direction D2 and the height direction D3. Under actual and defined working conditions, it is more conducive to the absorption and release of energy, thus ensuring the service performance stability of the corrugated plate 200 under defined working conditions; at the same time, restricting the corrugated plate 200 from being easily deformed (especially the middle intersection part 60).

[0067] As Figure 6 and Figure 7 shown, the intersection part 60 is symmetric about the plane at the center of the intersection part 60 defined by the longitudinal direction D2 and the height direction D3, and is symmetric about the plane defined by the transverse direction D1 and the height direction D3; and / or, the two first reinforcing ribs 31 formed on the transverse corrugation 30 are symmetric about the plane at the center of the intersection part 60 defined by the longitudinal direction D2 and the height direction D3; and / or, the second reinforcing rib 41 formed on the first longitudinal corrugation 40 and the third reinforcing rib 51 formed on the second longitudinal corrugation 50 are symmetric about the plane defined by the transverse direction D1 and the height direction D3.

[0068] From Figure 1 、 Figure 6 and Figure 7 it can be seen that there are two first reinforcing ribs 31 provided on the transverse corrugation 30, and the two first reinforcing ribs 31 are respectively located on both sides of the intersection part 60 and are arranged close to the intersection part 60; one second reinforcing rib 41 is provided on the first longitudinal corrugation 40, one third reinforcing rib 51 is provided on the second longitudinal corrugation 50, and both the second reinforcing rib 41 and the third reinforcing rib 51 are also arranged close to the intersection part 60.

[0069] As Figure 6 and Figure 7 shown, the main body part of each draw bead 62 of the intersection part 60 extends along the direction intersecting with the first longitudinal corrugation 40, the second longitudinal corrugation 50, and the transverse corrugation 30, and has a smooth transition; each draw bead 62 intersects with the main body 20 of the corrugated plate and extends along a plane, and has a smooth transition.

[0070] As Figure 1 and Figure 7As shown, the curvature radius of the projection curves at the ridges 67 of the four draw ribs 62 of the intersection 60 (projections on the plane formed by the center lines of the diagonal ridges) is equal. At the same time, the fillet radius at the ridges 67 of the four draw ribs 62 of the intersection 60 is a constant and equal value (for example, the fillet radius is 15 to 20 mm). When observed in the plane defined by the transverse direction D1 and the longitudinal direction D2 (looking down), the angle between the center lines of the ridges of two adjacent draw ribs 62 is about 60°.

[0071] With reference to the above embodiments, it can be seen that the overall appearance of the corrugated plate 200 of the embodiment of the present application is smooth and fluent, and the corrugations formed on the corrugated plate 200 and the intersection 60 of the corrugations fully ensure the absorption and release of energy of the component in the application environment;

[0072] At the same time, the corrugations formed on the corrugated plate 200 and the intersection 60 of the corrugations are specific and special positions on the corrugated plate 200, and have a sharp material deformation, which fully guarantees the overall strength and stability of the corrugated plate 200 to a certain extent, and can also show good elasticity, contraction ability and tension;

[0073] At the same time, the reinforcing ribs formed on the corrugations increase the surface area of ​​the corrugated plate 200 in contact with the liquefied gas, and also increase the local cross-sectional area of ​​the corrugations, thereby further enhancing the strength and rigidity of the corrugations and the corrugated plate 200;

[0074] On this basis, the shape and performance stability of the corrugated plate 200 after forming are further ensured.

[0075] The embodiment of the present application also provides a liquefied gas storage tank, which includes the corrugated plate 200 in any of the above embodiments. The corrugated plate 200 and other parts are used together to assemble a tank body for storing liquefied gas.

[0076] Liquefied gas storage tanks can be used to store, for example, liquid hydrogen, liquefied natural gas, etc.

[0077] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A corrugated plate for a liquefied gas storage tank, comprising a corrugated plate body, characterized in that: Also includes: transverse corrugations formed on the corrugated sheet body; Longitudinal corrugations formed on the corrugated plate body and comprising first and second longitudinal corrugations respectively located on opposite sides of the transverse corrugations; reinforcing ribs, which are respectively formed on the transverse corrugations, the first longitudinal corrugations and the second longitudinal corrugations; an intersection portion formed at the intersection of the transverse corrugation, the first longitudinal corrugation and the second longitudinal corrugation, the intersection portion comprising a smooth top surface and four draw ribs extending from the smooth top surface to the corrugated sheet body; The transverse corrugations are respectively provided with first reinforcing ribs on the parts on both sides of the intersection, and the first reinforcing ribs are formed by the top parts of the transverse corrugations being partially depressed downwards; A second reinforcing rib is provided on the first longitudinal corrugation, and the second reinforcing rib is formed by a top portion of the longitudinal corrugation being partially depressed downward; A third reinforcing rib is provided on the second longitudinal corrugation, and the third reinforcing rib is formed by a top portion of the second longitudinal corrugation being partially concave downward; The vertical distance from the forming axis of the first reinforcing rib formed on the transverse corrugation to the plane where the smooth top surface is located, the vertical distance from the forming axis of the second reinforcing rib formed on the first longitudinal corrugation to the plane where the smooth top surface is located, and the vertical distance from the forming axis of the third reinforcing rib formed on the second longitudinal corrugation to the plane where the smooth top surface is located are all equal and are constant values; and / or The forming axes of the two first reinforcing ribs formed on the transverse corrugations are in a first horizontal plane and are parallel to the smooth top surface, the forming axes of the second reinforcing ribs formed on the first longitudinal corrugations and the forming axes of the third reinforcing ribs formed on the second longitudinal corrugations are in a second horizontal plane and are parallel to the smooth top surface, and the first horizontal plane and the second horizontal plane are not coplanar.

2. The corrugated plate of the liquefied gas storage tank according to claim 1, characterized in that: Each draw rib extends from the smooth top surface and smoothly transitions, and continues to extend in the transverse direction, longitudinal direction and height direction, and smoothly intersects with the transverse corrugations, the longitudinal corrugations and the corrugated plate body. In the process of each draw rib extending from the smooth top surface to the corrugated plate body, the cross-sectional size of the plane defined by the transverse direction and the longitudinal direction gradually increases.

3. The corrugated plate of a liquefied gas storage tank according to claim 1, characterized in that: The corrugated plate body is mirror-symmetrical about a plane defined by the transverse direction and the height direction at the center line of the transverse corrugation ridge at the top of the transverse corrugation, and the outer normals of the two symmetrical planes form a certain angle; the outer sides of the two symmetrical planes are tilted upward at a certain angle.

4. The corrugated plate of a liquefied gas storage tank according to claim 1, characterized in that: The cross-sectional shape of the transverse corrugation obtained by taking the plane defined by the longitudinal direction and the height direction as the cross-section is a circular arch; the cross-sectional shapes of the first longitudinal corrugation and the second longitudinal corrugation obtained by taking the plane defined by the transverse direction and the height direction as the cross-section are both circular arches; and / or The arch width of the transverse corrugation, the arch width of the first longitudinal corrugation and the arch width of the second longitudinal corrugation are equal; and / or The height dimension of the transverse corrugation, the height dimension of the first longitudinal corrugation and the height dimension of the second longitudinal corrugation are equal; and / or The arch width dimension of the transverse corrugation is twice its arch height dimension, the arch width dimension of the first longitudinal corrugation is twice its arch height dimension, and the arch width dimension of the second longitudinal corrugation is twice its arch height dimension; and / or The transverse corrugation, the first longitudinal corrugation, and the second longitudinal corrugation have equal circular arc radii at their respective top ridges and equal circular arc radii on both sides of their respective arch bottom ends, and the cross-sectional dimensions of the transverse corrugation, the first longitudinal corrugation, and the second longitudinal corrugation all gradually shrink from bottom to top in the height direction.

5. The corrugated plate of a liquefied gas storage tank according to claim 1, characterized in that: The bottom surfaces of the first reinforcing rib, the second reinforcing rib, and the third reinforcing rib are all arc surfaces, and the curvatures of the three are equal.

6. The corrugated plate of a liquefied gas storage tank according to claim 1, characterized in that: The transverse dimension of the smooth top surface is equal to its longitudinal dimension.

7. The corrugated plate of a liquefied gas storage tank according to claim 1, characterized in that: There are four contour lines defining the smooth top surface on the smooth top surface, and each of the four contour lines is concave inward toward the center of the smooth top surface at its center position, and the concave curvatures of the four contour lines are equal.

8. The corrugated plate of a liquefied gas storage tank according to claim 1, characterized in that: The minimum transverse dimension of the smooth top surface is equal to its minimum longitudinal dimension.

9. The corrugated plate according to any one of claims 2 to 8, characterized in that: The first side surface where the smooth top surface is connected to the transverse corrugation is perpendicular to the projection plane defined by the transverse direction and the longitudinal direction; the second side surface where the smooth top surface is connected to the first longitudinal corrugation and the second longitudinal corrugation is perpendicular to the projection plane defined by the transverse direction and the longitudinal direction.

10. The corrugated plate according to claim 9, characterized in that The transition fillet radii at the intersections of the smooth top surface with the first side surface and the second side surface, the transition fillet radii of the four draw beads with the transverse corrugation, the first longitudinal corrugation, and the second longitudinal corrugation respectively, and the transition fillet radii at the intersections of the four draw beads with the corrugated plate body are all equal.

11. The corrugated plate according to claim 1, characterized in that The cross-section of the intersection part at the center of the intersection part in the plane defined by the transverse direction and the height direction is in a "J" shape, and the cross-section of the intersection part at the center of the intersection part in the plane defined by the longitudinal direction and the height direction is in a "J" shape.

12. The corrugated plate according to claim 1, characterized in that The intersection part is symmetric about the plane defined by the longitudinal direction and the height direction and symmetric about the plane defined by the transverse direction and the height direction; and / or The two first reinforcing ribs formed on the transverse corrugation are symmetric about the plane defined by the longitudinal direction and the height direction; and / or The second reinforcing rib formed on the first longitudinal corrugation and the third reinforcing rib formed on the second longitudinal corrugation are symmetric about the plane defined by the transverse direction and the height direction.

13. A liquefied gas storage tank, characterized in that: Including the corrugated plate according to any one of claims 1 to 12.

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