A mobile liquid hydrogen tank container

Abstract

The present invention provides a mobile liquid hydrogen tank container, which includes an inner container and an outer container arranged outside the inner container. A plurality of sliding support structures are arranged between the inner container and the outer container in the circumferential direction. The sliding support structures are used to support the inner container and enable the inner container to slide along the axial direction relative to the outer container when thermal stress is generated in the mobile liquid hydrogen tank container. By setting the sliding support structure between the inner container and the outer container in a multi-point connection manner in the circumferential direction, the present invention reduces the contact area between the inner container and the outer container on the basis of supporting the inner container, achieves the purpose of reducing heat leakage, and the inner container is well stressed, which can improve the safety of the inner container.

Description

Technical Field

[0001] This invention belongs to the field of cryogenic liquid transportation technology, and more specifically, relates to a mobile liquid hydrogen tank container. Background Technology

[0002] Currently, my country's energy distribution is mismatched. A large amount of photovoltaic and wind power in the western region can be used for PEM hydrogen production and hydrogen liquefaction, but the main energy application areas are in the eastern region. Therefore, it is necessary to transport hydrogen produced in the western region to the eastern region through pipeline gas transmission, compressed hydrogen, or liquid hydrogen.

[0003] Due to the low density and susceptibility to leakage of hydrogen, compressed gas hydrogen transport is costly, while pipeline hydrogen transport has limitations in transoceanic transport. Therefore, liquid hydrogen transport is currently the most economical and proven method. Liquid hydrogen transport requires a large number of liquid hydrogen tank containers for land-sea intermodal transport, and the heat leakage of these containers must be extremely minimal to meet the demands of long-distance ocean transport. Therefore, designing a support structure with minimal heat leakage is of great significance for improving the overall thermal insulation performance of the tank containers.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome at least some of the shortcomings of the prior art and provide a mobile liquid hydrogen tank. By setting the sliding support structure between the inner container and the outer container to a multi-point connection in the circumferential direction, the contact area between the inner container and the outer container is reduced while supporting the inner container, thereby reducing heat leakage. Moreover, the inner container is well stressed, which can improve the safety of the inner container.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] A mobile liquid hydrogen tank includes an inner container and an outer container disposed outside the inner container. A plurality of sliding support structures are provided between the inner container and the outer container in the circumferential direction. The sliding support structures are used to support the inner container and allow the inner container to slide relative to the outer container in the axial direction when the mobile liquid hydrogen tank generates thermal stress.

[0008] In some embodiments, the sliding support structure includes:

[0009] An inner container support arc plate, wherein the convex side of the inner container support arc plate is fixedly connected to the outer wall of the inner container;

[0010] An outer container supporting arc plate, wherein the convex side of the outer container supporting arc plate is fixedly connected to the inner wall of the outer container, and the concave side of the outer container supporting arc plate is disposed opposite to the concave side of the inner container supporting arc plate; and

[0011] An insulating support column is movably clamped between the concave side of the inner container support arc plate and the concave side of the outer container support arc plate, and the axial direction of the insulating support column is consistent with the axial direction of the inner container and the outer container.

[0012] In some embodiments, the sliding support structure further includes a limiting component for limiting the circumferential displacement of the thermally insulating support column.

[0013] In some embodiments, the limiting component includes:

[0014] Two limiting arc plates are disposed on both sides of the thermal insulation support column, located between the inner container support arc plate and the outer container support arc plate, and the concave side of the limiting arc plates abuts against the thermal insulation support column to restrict the circumferential displacement of the thermal insulation support column; and

[0015] Two fixing components are provided, each corresponding to one of the two limiting arc plates. One end of each fixing component is fixedly connected to the convex side of the limiting arc plate, and the other end is fixedly connected to the inner wall of the outer container.

[0016] In some embodiments, the fixing component includes:

[0017] Multiple limiting support plates are provided, which are spaced apart along the axial direction of the thermal insulation support column, and one end of each limiting support plate is fixedly connected to the inner wall of the outer container.

[0018] The first limiting ear plate is fixedly connected to the convex side of the limiting arc plate; and

[0019] The second limiting ear plate is fixedly connected to the other end of the plurality of limiting support plates, and the second limiting ear plate is fastened to the first limiting ear plate by a plurality of fastening connectors.

[0020] In some embodiments, a heat insulation strip is sandwiched between the second limiting ear plate and the first limiting ear plate.

[0021] In some embodiments, the thermal insulation support column is made of a non-metallic material with high compressive strength.

[0022] In some embodiments, the number of sliding support structures located below the horizontal centerline of the inner container and the outer container is greater than the number of sliding support structures located above the horizontal centerline of the inner container and the outer container.

[0023] In some embodiments, a fixed support structure is provided between the inner container and the outer container along the circumferential direction. The fixed support structure is used to fix and support the inner container and provide a support point when the inner container slides relative to the outer container along the axial direction.

[0024] In some embodiments, the fixed support structure includes:

[0025] The inner container fixing ring plate is fixedly connected to the outer wall of the inner container;

[0026] An outer container fixing ring plate is fixedly connected to the inner wall of the outer container. The outer container fixing ring plate is also tightly connected to the inner container fixing ring plate, and an annular heat insulation pad is sandwiched between the outer container fixing ring plate and the inner container fixing ring plate.

[0027] In some embodiments, the annular heat insulation pad is made of heat-insulating material.

[0028] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0029] 1. The mobile liquid hydrogen tank provided by the present invention reduces the contact area between the inner container and the outer container by setting the sliding support structure between the inner container and the outer container in a multi-point connection manner in the circumferential direction, thereby reducing heat leakage. Moreover, the inner container is well stressed, which can improve the safety of the inner container.

[0030] 2. The mobile liquid hydrogen tank provided by the present invention reduces heat leakage by movably clamping an insulating support column between the concave side of the inner container support arc plate and the concave side of the outer container support arc plate, thereby meeting the requirements for long-distance transportation of mobile liquid hydrogen tanks for a certain duration.

[0031] 3. The mobile liquid hydrogen tank provided by the present invention provides a fixed support structure along the circumferential direction between the inner container and the outer container to fix and support the inner container and provide a support point when the inner container slides relative to the outer container along the axial direction, thereby improving the stress stability between the inner container and the outer container.

[0032] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0033] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0034] Figure 1 This is a schematic diagram of the structure of a mobile liquid hydrogen tank provided according to an exemplary embodiment of the present invention;

[0035] Figure 2 yes Figure 1 Enlarged view of section I in the image;

[0036] Figure 3 yes Figure 1 Sectional view along line AA in the middle;

[0037] Figure 4 yes Figure 1 Enlarged view of section II in the image;

[0038] Figure 5 yes Figure 3 BB-direction sectional view in the middle;

[0039] Figure 6 yes Figure 3 A magnified view of section III in the image.

[0040] In the picture: 100, mobile liquid hydrogen tank container;

[0041] 10. Inner container; 11. Inner cylinder; 12. Inner end cap;

[0042] 20. Outer container; 21. Outer cylinder; 22. Outer head;

[0043] 30. Sliding support structure; 31. Inner container support arc plate; 32. Outer container support arc plate; 33. Thermal insulation support column; 34. Limiting arc plate; 35. Fixing component; 351. Limiting support upright plate; 352. First limiting ear plate; 353. Second limiting ear plate; 354. Fastening connector;

[0044] 40. Fixed support structure; 41. Inner container fixing ring plate; 42. Outer container fixing ring plate; 43. Annular heat insulation pad; 44. Bolts;

[0045] 50. Vacuum insulation cavity.

[0046] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0048] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] Figure 1 The structure of a mobile liquid hydrogen tank 100 provided according to an exemplary embodiment of the present invention is shown. Figure 2 A magnified view of the area. Figure 1 The structure at position I in the middle, Figure 3 It shows Figure 1 AA-direction cross-sectional structure in the middle, Figure 4 A magnified view of the area. Figure 1 Structure at point II in the middle, Figure 5 It shows Figure 3 BB-direction cross-sectional structure in the middle, Figure 6 A magnified view of the area. Figure 3 Structure III in the text.

[0051] like Figure 1 and Figure 3As shown, the mobile liquid hydrogen tank 100 includes an inner container 10 and an outer container 20 disposed outside the inner container 10. A vacuum insulation cavity 50 is formed between the inner container 10 and the outer container 20, thereby placing the inner container 10 in a vacuum environment and reducing heat leakage of the inner container 10. To fix the inner container 10 in the vacuum insulation cavity, a plurality of sliding support structures 30 and at least one fixed support structure 40 are provided in the circumferential direction between the inner container 10 and the outer container 20. Thus, when the inner container 10 is filled with a cryogenic medium, due to the contraction of the metal material upon cooling, the mobile liquid hydrogen tank 100 experiences thermal stress. The inner container 10 can contract along the axial direction with the fixed support structure 40 as a fixing point to alleviate the thermal stress.

[0052] Furthermore, within the vacuum insulated cavity 50, the outer side of the inner container 10 is wrapped with an insulating layer to further reduce heat leakage from the inner container 10. The insulating layer can be made of materials commonly used in the art, and this invention does not impose any limitations on its fabrication.

[0053] As an example, the inner container 10 includes an inner cylinder 11 and two inner heads 12 disposed at both ends of the inner cylinder 11. The outer container 20 includes an outer cylinder 21 and two outer heads 22 disposed at both ends of the outer cylinder 21. The inner heads 12 and the outer heads 22 are convex heads such as hemispherical, elliptical, dished, and spherical heads without folded edges. A plurality of sliding support structures 30 and at least one fixed support structure 40 are disposed between the inner cylinder 11 and the outer cylinder 21.

[0054] Optionally, the multiple sliding support structures 30 can be divided into multiple groups of structures arranged along the axial direction of the inner cylinder 11 and the outer cylinder 21. For example, a total of thirty sliding support structures 30 are arranged between the inner container 10 and the outer container 20 in the circumferential direction. These thirty sliding support structures 30 can be divided into three groups arranged along the axial direction of the inner cylinder 11 and the outer cylinder 21, with each group including ten sliding support structures 30.

[0055] In some embodiments, the number of sliding support structures 30 located below the horizontal centerline of the inner container 10 and the outer container 20 in each group of structures is greater than the number of sliding support structures 30 located above the horizontal centerline of the inner container 10 and the outer container 20. For example, as Figure 3As shown, a sliding support structure 30 can be provided at each end of the horizontal centerline of the inner container 10 and the outer container 20 to bear the horizontal inertial load of the inner container 10 perpendicular to the transport direction. Five sliding support structures 30 are provided in the space below the horizontal centerline of the inner container 10 and the outer container 20 to bear the weight of the inner container 10 and the inertial load perpendicular to the downward direction of the transport direction. Three sliding support structures 30 are provided in the space above the horizontal centerline of the inner container 10 and the outer container 20 to bear the inertial load of the inner container 10 perpendicular to the upward direction of the transport direction.

[0056] It should be noted that the above examples are merely illustrative of the layout of the sliding support structure 30 between the inner container 10 and the outer container 20, and do not limit the scope of protection of the present invention.

[0057] The following reference Figures 1 to 6 The specific structures of the sliding support structure 30 and the fixed support structure 40 are described separately.

[0058] It should be pointed out that, in Figure 1 In the mobile liquid hydrogen tank 100 shown, a fixed support structure 40 is provided on the right side of the inner cylinder 11 and the outer cylinder 21. However, it is understood that it is equally feasible to provide the fixed support structure 40 on the left side of the inner cylinder 11 and the outer cylinder 21. This invention will not elaborate further on this.

[0059] like Figure 2 ,and Figure 5 and Figure 6 As shown, the sliding support structure 30 includes an inner container support arc plate 31, an outer container support arc plate 32, and a heat-insulating support column 33. Both the inner container support arc plate 31 and the outer container support arc plate 32 have a convex side and a concave side. The convex side of the inner container support arc plate 31 is fixedly connected to the outer wall of the inner container 10; the convex side of the outer container support arc plate 32 is fixedly connected to the inner wall of the outer container 20, and the concave side of the outer container support arc plate 32 is opposite to the concave side of the inner container support arc plate 31. The heat-insulating support column 33 is movably clamped between the concave side of the inner container support arc plate 31 and the concave side of the outer container support arc plate 32, and the axial direction of the heat-insulating support column 33 is consistent with the axial direction of the inner container 10 and the outer container 20.

[0060] In the above scheme, by movably clamping an insulating support column 33 between the concave side of the inner container support arc plate 31 and the concave side of the outer container support arc plate 32, heat leakage is reduced while achieving a sliding connection between the inner container 10 and the outer container 20, which can meet the long-distance transportation requirements of the mobile liquid hydrogen tank 100 for a certain maintenance time.

[0061] As an example, the convex side of the inner container support arc plate 31 is welded to the outer wall of the inner container 10, and the convex side of the outer container support arc plate 32 is welded to the inner wall of the outer container 20. This reduces the manufacturing difficulty, eliminates the need for precision machining of parts, and lowers the processing cost of the mobile liquid hydrogen tank 100.

[0062] It should be noted that the thermal insulation support column 33 should be made of a non-metallic material with high compressive strength, that is, the thermal insulation support column 33 should have a low thermal conductivity but a high load-bearing capacity, which can meet the strength requirements for supporting the inner container 10 and will not cause heat leakage. Furthermore, as... Figure 5 As shown, by setting the outer container support arc plate 32 and the inner container support arc plate 31, the contact area between the outer container support arc plate 32 and the inner container support arc plate 31 and the heat insulation support column 33 is increased, and the contact stress is reduced.

[0063] In some embodiments, the sliding support structure 30 further includes a limiting component for limiting the circumferential displacement of the thermal insulation support column 33, preventing the thermal insulation support column 33 from rotating around its own axis when the inner container 10 slides relative to the outer container 20, thus affecting the stability of the inner container 10.

[0064] As an example, the limiting component includes two limiting arc plates 34 and two fixing components 35, wherein the two fixing components 35 are configured one-to-one with the two limiting arc plates 34 and are used to fix the limiting arc plates 34.

[0065] The limiting arc plate 34 has a concave side and a convex side. The two limiting arc plates 34 are disposed on both sides of the heat-insulating support column 33, located between the inner container support arc plate 31 and the outer container support arc plate 32. The concave side of the limiting arc plate 34 abuts against the heat-insulating support column 33 to limit the circumferential displacement of the heat-insulating support column 33. One end of the fixing component 35 is fixedly connected to the convex side of the limiting arc plate 34, and the other end is fixedly connected to the inner wall of the outer container 20.

[0066] Alternatively, the limiting assembly includes two limiting strips and two fixing components 35. Correspondingly, the thermal insulation support column 33 is provided with two limiting grooves for accommodating the limiting strips. The two fixing components 35 are arranged one-to-one with the two limiting strips to fix the limiting strips. One end of the fixing component 35 is fixedly connected to the limiting strip, and the other end is fixedly connected to the inner wall of the outer container 20. In other words, the limiting strips abut against the limiting grooves of the thermal insulation support column 33 to limit the circumferential displacement of the thermal insulation support column 33.

[0067] In some embodiments, the fixing assembly 35 includes a plurality of limiting support plates 351, a first limiting ear plate 352, and a second limiting ear plate 353. The plurality of limiting support plates 351 are spaced apart along the axial direction of the thermal insulation support column 33, and one end of each limiting support plate 351 is fixedly connected to the inner wall of the outer container 20. The first limiting ear plate 352 is fixedly connected to the convex side of the limiting arc plate 34 or a limiting strip. The second limiting ear plate 353 is fixedly connected to the other end of the plurality of limiting support plates 351, and the second limiting ear plate 353 and the first limiting ear plate 352 are fastened together by a plurality of fastening connectors 354.

[0068] Specifically, the first limiting ear plate 352 is welded to the convex side of the limiting arc plate 34 or the limiting strip. One end of the multiple limiting support plates 351 is welded to the inner wall of the outer container 20, and the other end is welded to the second limiting ear plate 353. The first limiting ear plate 352 and the second limiting ear plate 353 are then fastened together with fasteners 354 such as screws or bolts, which facilitates the installation and disassembly of the heat insulation support column 33.

[0069] Optionally, a heat insulation strip is sandwiched between the second limiting ear plate 353 and the first limiting ear plate 352 to further reduce heat leakage.

[0070] Alternatively, the thermal insulation strip may be made of non-metallic materials suitable for low-temperature environments, such as foamed glass or rock wool.

[0071] like Figure 4 As shown, the fixed support structure 40 includes an inner container fixing ring plate 41 and an outer container fixing ring plate 42. The inner container fixing ring plate 41 is fixedly connected to the outer wall of the inner container 10; the outer container fixing ring plate 42 is fixedly connected to the inner wall of the outer container 20. The outer container fixing ring plate 42 and the inner container fixing ring plate 41 are fastened together by screws or bolts 44 or other fastening connectors, and an annular heat insulation pad 43 is sandwiched between the outer container fixing ring plate 42 and the inner container fixing ring plate 41.

[0072] In the above scheme, the inner container 10 is fixed and supported by an inner container fixing ring plate 41 and an outer container fixing ring plate 42, which has a simple structure and low manufacturing cost. Moreover, an annular heat insulation pad 43 is sandwiched between the inner container fixing ring plate 41 and the outer container fixing ring plate 42 to increase the thermal resistance between the heat conduction circuit of the inner container 10 and the outer container 20 and reduce heat leakage.

[0073] Optionally, the annular heat insulation pad 43 is made of a non-metallic heat insulation material suitable for low-temperature environments, such as foam glass, rock wool, etc.

[0074] The mobile liquid hydrogen tank 100 provided by the present invention has a gas cylinder inner container 10 support structure with low heat leakage, good stress resistance, simple structure and low manufacturing cost, which can meet the needs of providing vehicles with storage for a certain period of time for cryogenic fuels such as liquid hydrogen and LNG.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A mobile liquid hydrogen tank container, comprising an inner container and an outer container arranged outside the inner container, characterized in that a plurality of sliding support structures are arranged between the inner container and the outer container in the circumferential direction, the sliding support structures are used to support the inner container, and when temperature difference stress occurs in the mobile liquid hydrogen tank container, the inner container can slide relative to the outer container along the axial direction; the number of sliding support structures below the horizontal center line of the inner container and the outer container is greater than the number of sliding support structures above the horizontal center line of the inner container and the outer container; wherein, the sliding support structure includes: an inner container support arc plate, the convex side of the inner container support arc plate is fixedly connected to the outer wall of the inner container; an outer container support arc plate, the convex side of the outer container support arc plate is fixedly connected to the inner wall of the outer container, and the concave side of the outer container support arc plate is arranged opposite to the concave side of the inner container support arc plate; and a heat insulation support column, which is movably clamped between the concave sides of the inner container support arc plate and the outer container support arc plate, and the axial direction of the heat insulation support column is consistent with the axial directions of the inner container and the outer container; a limiting component, used to limit the circumferential displacement of the heat insulation support column, the limiting component includes: two limiting arc plates, the two limiting arc plates are arranged on both sides of the heat insulation support column, between the inner container support arc plate and the outer container support arc plate, and the concave sides of the limiting arc plates abut against the heat insulation support column to limit the circumferential displacement of the heat insulation support column; and two fixing components, the two fixing components are arranged corresponding to the two limiting arc plates one by one, one end of the fixing component is fixedly connected to the convex side of the limiting arc plate, and the other end is fixedly connected to the inner wall of the outer container; the fixing component includes: a plurality of limiting support vertical plates, the plurality of limiting support vertical plates are arranged at intervals along the axial direction of the heat insulation support column, and one ends of the plurality of limiting support vertical plates are respectively fixedly connected to the inner wall of the outer container; a first limiting ear plate, fixedly connected to the convex side of the limiting arc plate; and a second limiting ear plate, fixedly connected to the other ends of the plurality of limiting support vertical plates, and the second limiting ear plate is tightly connected to the first limiting ear plate through a plurality of fastening connection components.

2. The mobile liquid hydrogen tank container according to claim 1, characterized in that the heat insulation support column is made of a non-metallic material with high compressive strength.

3. The mobile liquid hydrogen tank container according to claim 1, characterized in that a fixed support structure is arranged between the inner container and the outer container in the circumferential direction, the fixed support structure is used to fixedly support the inner container, and provides a support point when the inner container slides relative to the outer container along the axial direction.

4. The mobile liquid hydrogen tank container according to claim 3, characterized in that the fixed support structure includes: an inner container fixing ring plate, fixedly connected to the outer wall of the inner container; The outer container fixing ring plate is fixedly connected to the inner wall of the outer container. The outer container fixing ring plate is tightly connected to the inner container fixing ring plate, and an annular heat insulation pad is clamped between the outer container fixing ring plate and the inner container fixing ring plate.

5. The mobile liquid hydrogen tank container according to claim 4, wherein the annular heat insulation pad is made of heat-insulating material.

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