CN117781152A - Portable liquid hydrogen tank case - Google Patents

Abstract

The invention provides a movable liquid hydrogen tank, which comprises an inner container and an outer container arranged outside the inner container, wherein a plurality of sliding support structures are arranged between the inner container and the outer container in the circumferential direction, and the sliding support structures are used for supporting the inner container and enabling the inner container to slide along the axial direction relative to the outer container when temperature difference stress is generated by the movable liquid hydrogen tank. According to the invention, the sliding supporting structure between the inner container and the outer container is set to be in a multipoint connection mode in the circumferential direction, so that the contact area between the inner container and the outer container is reduced on the basis of supporting the inner container, the purpose of reducing heat leakage is realized, the stress of the inner container is good, and the safety of the inner container can be improved.

Description

Portable liquid hydrogen tank case

Technical Field

The invention belongs to the technical field of low-temperature liquid transportation, and particularly relates to a movable liquid hydrogen tank.

Background

At present, the energy distribution of China is not matched, a large amount of photoelectricity and wind power in the western region can be used for PEM hydrogen production and hydrogen liquefaction, but the energy is mainly applied to the eastern region, so that the hydrogen produced in the western region needs to be transported to the eastern region in a pipeline gas transmission mode, a compressed hydrogen mode or a liquid hydrogen mode and the like.

Because of the low density and easy leakage of hydrogen, the cost of transporting hydrogen by compressed gas is high, and short plates exist in transoceanic transportation of hydrogen by pipeline, so the liquid hydrogen transportation is the most economical way which has been verified at present. The liquid hydrogen transportation needs a large amount of liquid hydrogen tanks to participate in the intermodal transportation, and the tank heat leakage is required to be very tiny or is difficult to meet the ocean transportation requirement, so the design of the support structure with extremely small heat leakage is of great significance to the improvement of the overall heat insulation performance of the tank.

In view of this, the present invention has been made.

Disclosure of Invention

The invention aims to solve the technical problems of at least overcoming the defects of the prior art and providing the movable liquid hydrogen tank, wherein a sliding support structure between an inner container and an outer container is set to be in a multipoint connection mode in the circumferential direction, so that the contact area of the inner container and the outer container is reduced on the basis of supporting the inner container, the aim of reducing heat leakage is fulfilled, the stress of the inner container is good, and the safety of the inner container can be improved.

In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:

the utility model provides a portable liquid hydrogen tank, includes the inner container and sets up the outer container in the inner container outside, the inner container with be provided with a plurality of slip bearing structure in the week direction between the outer container, slip bearing structure is used for supporting the inner container and when portable liquid hydrogen tank produces the temperature difference stress makes the inner container for the outer container slides along the axis direction.

In some embodiments, the sliding support structure comprises:

the inner container support arc plate is fixedly connected with the outer wall of the inner container on the convex side of the inner container support arc plate;

the outer container support arc plate is fixedly connected with the inner wall of the outer container, and the concave side of the outer container support arc plate is opposite to the concave side of the inner container support arc plate; and

and the heat insulation 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 heat insulation support column is consistent with the axial direction of the inner container and the outer container.

In some embodiments, the sliding support structure further comprises a limiting assembly for limiting circumferential displacement of the thermally insulated support column.

In some embodiments, the spacing assembly comprises:

the two limiting arc plates are arranged on two sides of the heat insulation support column, are positioned between the inner container support arc plate and the outer container support arc plate, and the concave sides of the limiting arc plates are abutted with the heat insulation support column to limit the circumferential displacement of the heat insulation support column; and

the two fixing assemblies are arranged in one-to-one correspondence with the two limiting arc plates, one end of each fixing assembly is fixedly connected with the convex side of each limiting arc plate, and the other end of each fixing assembly is fixedly connected with the inner wall of the outer container.

In some embodiments, the securing assembly comprises:

the plurality of limit support vertical plates are arranged at intervals along the axial direction of the heat insulation support column, and one ends of the plurality of limit support vertical plates are fixedly connected with the inner wall of the outer container respectively;

the first limiting lug plate is fixedly connected with the convex side of the limiting arc plate; and

the second limiting lug plate is fixedly connected with the other ends of the limiting support vertical plates, and the second limiting lug plate is fixedly connected with the first limiting lug plate through a plurality of fastening connectors.

In some embodiments, a heat insulating strip is sandwiched between the second spacing ear plate and the first spacing ear plate.

In some embodiments, the thermally insulated support columns are made of a non-metallic material having high compressive strength.

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

In some embodiments, a fixed support structure is arranged between the inner container and the outer container along the circumferential direction, and the fixed support structure is used for fixedly supporting the inner container and providing a supporting point for the inner container to slide along the axial direction relative to the outer container.

In some embodiments, the fixed support structure comprises:

the inner container fixing annular plate is fixedly connected with the outer wall of the inner container;

the outer container fixing ring plate is fixedly connected with the inner wall of the outer container, the outer container fixing ring plate is fixedly connected with 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.

In some embodiments, the annular heat insulating mat is made of a heat insulating material.

By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.

1. According to the mobile liquid hydrogen tank, the sliding support structure between the inner container and the outer container is set to be in a multipoint connection mode in the circumferential direction, so that the contact area between the inner container and the outer container is reduced on the basis of supporting the inner container, the purpose of reducing heat leakage is achieved, the stress of the inner container is good, and the safety of the inner container can be improved.

2. According to the movable liquid hydrogen tank, the heat insulation 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, so that the heat leakage is reduced on the basis of sliding connection of the inner container relative to the outer container, and the long-distance transportation requirement of the movable liquid hydrogen tank for a certain maintenance time can be met.

3. According to the movable liquid hydrogen tank, the fixed supporting structure is arranged between the inner container and the outer container along the circumferential direction and is used for fixedly supporting the inner container, and supporting points are provided for the inner container to slide along the axial direction relative to the outer container, so that the stress stability between the inner container and the outer container is improved.

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

fig. 1 is a schematic structural view of a mobile liquid hydrogen tank provided according to an exemplary embodiment of the present invention;

FIG. 2 is an enlarged view of a portion at I in FIG. 1;

FIG. 3 is a cross-sectional view taken along A-A in FIG. 1;

FIG. 4 is an enlarged view of a portion at II in FIG. 1;

FIG. 5 is a B-B cross-sectional view of FIG. 3;

fig. 6 is a partial enlarged view at III in fig. 3.

In the figure: 100. a mobile liquid hydrogen tank;

10. an inner container; 11. an inner cylinder; 12. an inner seal head;

20. an outer container; 21. an outer cylinder; 22. an outer end enclosure;

30. a sliding support structure; 31. the inner container supports the arc plate; 32. the outer container supports the arc plate; 33. a thermally insulating support column; 34. limiting arc plates; 35. a fixing assembly; 351. limiting and supporting vertical plates; 352. the first limiting lug plate; 353. the second limiting lug plate; 354. fastening the connecting piece;

40. fixing the support structure; 41. an inner container fixing ring plate; 42. an outer container fixing ring plate; 43. an annular heat insulating mat; 44. a bolt;

50. a vacuum insulation chamber.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Fig. 1 illustrates a structure of a mobile liquid hydrogen tank 100 provided according to an exemplary embodiment of the present invention, fig. 2 illustrates a part of a structure at I in fig. 1 in an enlarged manner, fig. 3 illustrates a cross-sectional structure A-A in fig. 1, fig. 4 illustrates a part of a structure at II in fig. 1 in an enlarged manner, fig. 5 illustrates a cross-sectional structure B-B in fig. 3, and fig. 6 illustrates a part of a structure at III in fig. 3 in an enlarged manner.

As shown in fig. 1 and 3, the mobile liquid hydrogen tank 100 includes an inner container 10 and an outer container 20 disposed outside the inner container 10, and a vacuum insulation chamber 50 is formed between the inner container 10 and the outer container 20, thereby allowing the inner container 10 to be in a vacuum environment and reducing leakage heat of the inner container 10. In order to fix the inner container 10 in the adiabatic vacuum chamber, a plurality of sliding support structures 30 and at least one fixed support structure 40 are provided in a circumferential direction between the inner container 10 and the outer container 20, so that when the inner container 10 is filled with a low temperature medium, the inner container 10 may shrink in the axial direction with the fixed support structure 40 as a fixing point to relieve the temperature difference stress when the movable liquid hydrogen tank 100 generates the temperature difference stress due to shrinkage of the metal material upon cooling.

In addition, in the vacuum insulation chamber 50, the outside of the inner container 10 is wrapped with a heat insulation layer, further reducing the heat leakage of the inner container 10. The heat insulating layer may be made of a material commonly used in the art, and the present invention is not limited thereto.

As an example, the inner container 10 includes an inner tube 11 and two inner caps 12 provided at both ends of the inner tube 11. The outer container 20 includes an outer cylinder 21 and two outer caps 22 provided at both ends of the outer cylinder 21. The inner seal head 12 and the outer seal head 22 adopt hemispherical, elliptic, dished, sphere-shaped seal heads without folds and other convex seal heads. 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.

Alternatively, the plurality of sliding support structures 30 may be divided into a plurality of groups of structures arranged in the axial direction of the inner cylinder 11 and the outer cylinder 21. For example, thirty sliding support structures 30 are provided in total between the inner container 10 and the outer container 20 in the circumferential direction, and the thirty sliding support structures 30 may be divided into three groups provided in the axial direction of the inner cylinder 11 and the outer cylinder 21, each group including ten sliding support structures 30.

In some embodiments, the number of sliding support structures 30 in each set of structures below the horizontal centerline of the inner container 10 and the outer container 20 is greater than the number of sliding support structures 30 above the horizontal centerline of the inner container 10 and the outer container 20. For example, as shown in fig. 3, a sliding support structure 30 may be provided at each of both ends of the horizontal center lines of the inner container 10 and the outer container 20 for bearing inertial load of the inner container 10 in a horizontal direction perpendicular to the transport direction. Five sliding support structures 30 are provided in the space below the horizontal center lines of the inner container 10 and the outer container 20 for bearing the weight of the inner container 10 and the inertial load in the downward direction perpendicular to the transport direction. Three sliding support structures 30 are provided in the space above the horizontal center line of the inner container 10 and the outer container 20 for bearing inertial loads of the inner container 10 in an upward direction perpendicular to the transport direction.

It should be noted that the above number examples are merely exemplary illustrations of the placement of the sliding support structure 30 between the inner container 10 and the outer container 20, and do not limit the scope of the present invention.

The specific structures of the sliding support structure 30 and the fixed support structure 40 will be described with reference to fig. 1 to 6, respectively.

It should be noted that, in the mobile liquid hydrogen tank case 100 shown in fig. 1, the fixed support structure 40 is provided on the right side of the inner cylinder 11 and the outer cylinder 21, but it is understood that it is equally possible to provide the fixed support structure 40 on the left side of the inner cylinder 11 and the outer cylinder 21, and the present invention will not be repeated.

As shown in fig. 2, and 5 and 6, the sliding support structure 30 includes an inner vessel support arc plate 31, an outer vessel support arc plate 32, and an insulating support column 33. The inner vessel support arc 31 and the outer vessel support arc 32 each have a convex side and a concave side. Wherein the convex side of the inner container supporting arc plate 31 is fixedly connected with the outer wall of the inner container 10; the convex side of the outer container support arc plate 32 is fixedly connected with the inner wall of the outer container 20, and the concave side of the outer container support arc plate 32 is disposed opposite to the concave side of the inner container support arc plate 31. The heat insulating support column 33 is movably interposed 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 coincides with the axial direction of the inner container 10 and the outer container 20.

In the above-mentioned scheme, by movably sandwiching the heat insulation 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, the heat leakage is reduced on the basis of the sliding connection of the inner container 10 relative to the outer container 20, and the long-distance transportation requirement of the movable liquid hydrogen tank 100 for a certain maintenance time can be satisfied.

As an example, the convex side of the inner container supporting arc plate 31 is welded to the outer wall of the inner container 10, and the convex side of the outer container supporting arc plate 32 is welded to the inner wall of the outer container 20, so that the difficulty of manufacturing and processing can be reduced, the parts do not need to be finished, and the processing cost of the mobile liquid hydrogen tank 100 can be reduced.

It should be noted that the heat-insulating support columns 33 should be made of a non-metallic material having high compressive strength, i.e., the heat-insulating support columns 33 have a small coefficient of thermal conductivity but a high load-bearing capacity, can meet the strength requirements for supporting the inner container 10, and do not generate heat leakage. Further, as shown in fig. 5, by providing 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 columns 33 is increased, and the contact stress is reduced.

In some embodiments, the sliding support structure 30 further comprises a limiting assembly for limiting the circumferential displacement of the thermally insulating support columns 33, preventing the thermally insulating support columns 33 from rotating about their own axes when the inner container 10 slides relative to the outer container 20, affecting the stability of the inner container 10.

As an example, the limiting assembly includes two limiting arc plates 34 and two fixing assemblies 35, where the two fixing assemblies 35 are disposed in one-to-one correspondence with the two limiting arc plates 34, and are used for fixing the limiting arc plates 34.

The limiting arc plates 34 have concave sides and convex sides, the two limiting arc plates 34 are disposed on both sides of the heat insulation support column 33 between the inner container support arc plate 31 and the outer container support arc plate 32, and the concave sides of the limiting arc plates 34 abut against the heat insulation support column 33 to limit circumferential displacement of the heat insulation support column 33. One end of the fixing component 35 is fixedly connected with the convex side of the limiting arc plate 34, and the other end is fixedly connected with the inner wall of the outer container 20.

Alternatively, the limiting assembly comprises two limiting strips and two fixing assemblies 35, and two limiting grooves for accommodating the limiting strips are arranged on the heat insulation support columns 33 corresponding to the limiting strips. The two fixing assemblies 35 are arranged in one-to-one correspondence with the two limit bars, and are used for fixing the limit bars. One end of the fixing component 35 is fixedly connected with the limit bar, and the other end is fixedly connected with the inner wall of the outer container 20. In other words, the limit bars abut in limit grooves of the heat insulating support columns 33 to limit circumferential displacement of the heat insulating support columns 33.

In some embodiments, the securing assembly 35 includes a plurality of spacing support risers 351, a first spacing ear plate 352, and a second spacing ear plate 353. Wherein the plurality of spacing support vertical plates 351 are arranged at intervals along the axial direction of the heat insulation support column 33, and one ends of the plurality of spacing support vertical plates 351 are fixedly connected with the inner wall of the outer container 20 respectively; the first limiting ear plate 352 is fixedly connected with the convex side or the limiting strip of the limiting arc plate 34; the second spacing otic placode 353 with the other end fixed connection of a plurality of spacing support risers 351, the second spacing otic placode 353 with first spacing otic placode 352 passes through a plurality of fastening connection 354 fastening connection.

Specifically, the first spacing otic placode 352 is welded to the convex side or the spacing of the spacing arc plate 34, one ends of the plurality of spacing support risers 351 are welded to the inner wall of the outer container 20, the other ends are welded to the second spacing otic placode 353, and the first spacing otic placode 352 and the second spacing otic placode 353 are fastened and connected by fastening connectors 354 such as screws or bolts, so that the installation and the disassembly of the heat insulation support 33 are facilitated.

Optionally, a heat insulation strip is sandwiched between the second spacing ear plate 353 and the first spacing ear plate 352, so as to further reduce heat leakage.

Alternatively, the insulating strips are made of a non-metallic material that can be adapted for use in low temperature environments, such as foam glass, rock wool, and the like.

As shown in fig. 4, the fixed support structure 40 includes an inner container fixed ring plate 41 and an outer container fixed ring plate 42. Wherein the inner container fixing ring plate 41 is fixedly connected with 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 is fixedly connected to the inner container fixing ring plate 41 by fastening connectors such as screws or bolts 44, and an annular heat insulating pad 43 is interposed between the outer container fixing ring plate 42 and the inner container fixing ring plate 41.

In the above scheme, the inner container 10 is fixedly supported by adopting the mode of the inner container fixing ring plate 41 and the outer container fixing ring plate 42, so that the structure is simple, and the manufacturing and processing cost is low. Further, the annular heat insulating pad 43 is interposed between the inner container fixing ring plate 41 and the outer container fixing ring plate 42, thereby increasing the thermal resistance between the heat conduction circuits of the inner container 10 and the outer container 20 and reducing the leakage heat.

Alternatively, the annular heat insulating mat 43 is made of a nonmetallic heat insulating material that can be suitable for a low-temperature environment, such as foam glass, rock wool, or the like.

The movable liquid hydrogen tank 100 provided by the invention has the advantages of low heat leakage, good stress, simple structure and low manufacturing and processing cost, and can meet the requirement of providing low-temperature fuel such as liquid hydrogen, LNG and the like for vehicles for storage for a certain maintenance time.

The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.

Claims (10)

1. The mobile liquid hydrogen tank comprises an inner container and an outer container arranged outside the inner container, and is characterized in that,

a plurality of sliding support structures are arranged between the inner container and the outer container in the circumferential direction, and the sliding support structures are used for supporting the inner container and enabling the inner container to slide along the axial direction relative to the outer container when temperature difference stress is generated by the movable liquid hydrogen tank.

2. The mobile liquid hydrogen tank as claimed in claim 1, wherein,

the sliding support structure includes:

the inner container support arc plate is fixedly connected with the outer wall of the inner container on the convex side of the inner container support arc plate;

the outer container support arc plate is fixedly connected with the inner wall of the outer container, and the concave side of the outer container support arc plate is opposite to the concave side of the inner container support arc plate; and

and the heat insulation 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 heat insulation support column is consistent with the axial direction of the inner container and the outer container.

3. The mobile liquid hydrogen tank as claimed in claim 2, wherein,

the sliding support structure further includes a limiting assembly for limiting circumferential displacement of the thermally insulated support column.

4. A mobile liquid hydrogen tank as claimed in claim 3, wherein,

the spacing subassembly includes:

the two limiting arc plates are arranged on two sides of the heat insulation support column, are positioned between the inner container support arc plate and the outer container support arc plate, and the concave sides of the limiting arc plates are abutted with the heat insulation support column to limit the circumferential displacement of the heat insulation support column; and

the two fixing assemblies are arranged in one-to-one correspondence with the two limiting arc plates, one end of each fixing assembly is fixedly connected with the convex side of each limiting arc plate, and the other end of each fixing assembly is fixedly connected with the inner wall of the outer container.

5. The mobile liquid hydrogen tank as claimed in claim 4, wherein,

the fixing assembly includes:

the plurality of limit support vertical plates are arranged at intervals along the axial direction of the heat insulation support column, and one ends of the plurality of limit support vertical plates are fixedly connected with the inner wall of the outer container respectively;

the first limiting lug plate is fixedly connected with the convex side of the limiting arc plate; and

the second limiting lug plate is fixedly connected with the other ends of the limiting support vertical plates, and the second limiting lug plate is fixedly connected with the first limiting lug plate through a plurality of fastening connectors.

6. The mobile liquid hydrogen tank as claimed in any one of claims 2 to 5, wherein,

the heat-insulating support column is made of a nonmetallic material with high compressive strength.

7. The mobile liquid hydrogen tank as claimed in any one of claims 1 to 5, wherein,

the number of sliding support structures located below the horizontal center line of the inner and outer containers is greater than the number of sliding support structures located above the horizontal center line of the inner and outer containers.

8. The mobile liquid hydrogen tank as claimed in any one of claims 1 to 5, wherein,

and a fixed supporting structure is arranged between the inner container and the outer container along the circumferential direction and is used for fixedly supporting the inner container and providing supporting points for the inner container to slide along the axial direction relative to the outer container.

9. The mobile liquid hydrogen tank of claim 8 wherein,

the fixed support structure includes:

the inner container fixing annular plate is fixedly connected with the outer wall of the inner container;

the outer container fixing ring plate is fixedly connected with the inner wall of the outer container, the outer container fixing ring plate is fixedly connected with 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.

10. The mobile liquid hydrogen tank of claim 9 wherein,

the annular heat insulation pad is made of heat insulation materials.