Light low-temperature storage container with long service life

Abstract

The utility model provides a light long-service-life low-temperature storage container which comprises a tank body in a circular frustum shape. The hemispherical seal heads are respectively arranged at the two ends of the circular frustum-shaped tank body in a sealing manner, and the sizes of the hemispherical seal heads arranged at the two ends of the tank body are different; and the tank body and the semi-spherical sealing heads at the two ends are all composed of a plurality of different thermal insulation layers. By means of the arrangement, when a plurality of storage containers are used in a matched mode, the adjacent storage containers can be in attached contact through the outer side walls of the circular frustum-shaped tank bodies and are placed in a crossed mode, the cooling capacity can be fully utilized between every two adjacent storage containers, and then the heat preservation efficiency is improved; meanwhile, the placing space can be saved, and the utilization rate of the aircraft space is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of storage containers, and in particular relates to a lightweight, long-life, low-temperature storage container. Background Art

[0002] As an important part of modern transportation, the energy efficiency and safety of aircraft have always been the focus of attention in the aviation field. For example, liquid hydrogen, as an efficient and clean energy, has broad application prospects in the aviation field. However, the storage and management technology of cryogenic media such as liquid hydrogen has always been one of the bottlenecks restricting its widespread application.

[0003] Existing liquid hydrogen storage containers for aircraft are usually configured in a long strip shape. However, the space on the aircraft is limited. The long strip storage containers will cause the storage containers to occupy a large space, reducing the space utilization rate on the aircraft. Moreover, multiple storage containers cannot be cross-set, which will increase the pre-cooling time and reduce the insulation efficiency.

[0004] Therefore, designing a lightweight, long-life low-temperature storage container that can improve the insulation efficiency of the storage container while saving the space occupied by the low-temperature storage container has become a technical problem that needs to be urgently solved by technical personnel in this field.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and the purpose is to provide a lightweight and long-life low-temperature storage container. By providing a tank body in the shape of a circular frustum and hemispherical heads installed at both ends of the tank body, the utility model is used to solve the problem that the existing low-temperature medium storage containers occupy a large space, cannot fully utilize the cold, and result in poor insulation efficiency of the storage containers.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0008] A lightweight, long-life cryogenic storage container comprises a tank body in the shape of a circular frustum; a hemispherical head respectively installed at two ends of the tank body in a closed manner, and the sizes of the heads installed at the two ends of the tank body are different; the tank body and the hemispherical heads at both ends are composed of a plurality of different insulation layers.

[0009] Furthermore, the tank body includes a large mouth end and a small mouth end, which are respectively arranged corresponding to the hemispherical heads of different sizes; the tank body is respectively provided with at least one annular support structure arranged around the circumference of the tank body near the large mouth end and the small mouth end; one end of the annular support structure is provided with a mounting portion, and the mounting portion radially protrudes outward from the annular support structure and is connected to the wing of the aircraft to be fixed.

[0010] Furthermore, the annular support structure is embedded between two adjacent insulation layers in the tank body, and the inner circumference of the annular support structure abuts against the outer circumference of the insulation layer arranged on the inner circumference of the annular support structure.

[0011] Furthermore, the outer shell body composed of the tank body and the hemispherical head is arranged inside and outside the inner container; the multiple different insulation layers are arranged in sequence from the outside to the inside between the inner container and the outer shell body.

[0012] Furthermore, the outer shell includes at least a protective layer, a moisture-proof layer and a glass fiber layer from the outside to the inside, and they are bonded to each other via low-temperature glue; the protective layer is made of aluminum skin, and the moisture-proof layer is made of mastic.

[0013] Furthermore, the inner container includes at least an aluminum-plated film layer, a glass fiber cloth layer and a metal shell wall layer from the outside to the inside; the inner wall of the glass fiber cloth layer is fixed to the outer wall of the metal shell wall layer by adhesive special for ultra-low temperature, and the aluminum-plated film layer is wrapped around the outer wall of the glass fiber cloth layer; the radial thickness of the aluminum-plated film layer, the glass fiber cloth layer and the metal shell wall layer are basically the same.

[0014] Furthermore, the multiple different thermal insulation layers include at least a polyurethane foam layer connected to the inner wall of the outer shell; an aerogel layer connected to the outer wall of the inner container; and a lightweight thermal insulation layer is provided between the polyurethane foam layer and the aerogel layer, between the inner container and the aerogel layer, and between the outer shell and the polyurethane foam layer.

[0015] Furthermore, the lightweight thermal insulation layer at least includes an aluminized film layer and a glass fiber layer, and the outer wall of the glass fiber layer is in relatively close contact with the inner wall of the aluminized film layer and is bonded and fixed by low-temperature glue.

[0016] Furthermore, the ratio of the radial thickness of the polyurethane foam layer to the radial thickness of the aerogel layer is between 1:1 and 1:0.6.

[0017] Furthermore, at least two outer shells are placed crosswise, and the outer side walls of adjacent outer shells are at least partially fitted to each other.

[0018] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0019] 1. The utility model provides a tank body in the shape of a circular cone. When a plurality of storage containers are used in combination, adjacent storage containers can be in contact with each other through the outer side walls of the circular cone-shaped tank body and placed crosswise, so that two adjacent storage containers can fully utilize each other's cold energy, thereby improving the insulation efficiency, and at the same time saving the placement space, thereby improving the utilization rate of the aircraft space.

[0020] 2. The utility model can further save the placement space of the storage container by providing hemispherical heads respectively installed on the two ends of the circular frustum-shaped tank body, enrich the placement scenes of the storage containers in the aircraft, and further improve the space utilization rate in the aircraft.

[0021] 3. The utility model provides at least one annular support structure arranged along the circumference of the tank body near the large mouth end and the small mouth end respectively; one end of the annular support structure is provided with a mounting portion, and the mounting portion radially protrudes outward from the annular support structure. The storage container can be fixedly connected to the aircraft wing by hanging or supporting the storage container in a variety of ways, thereby increasing the diversity of installation methods of the storage container and further improving the diversity of storage container placement scenarios in the aircraft.

[0022] 4. The utility model forms a thermal insulation layer by arranging a polyurethane foam layer connected to the inner wall of the outer shell and an aerogel layer connected to the outer wall of the inner container. The aerogel layer is soft and has strong plasticity, can better fit the shape of the storage tank, has strong low temperature resistance, and increases the strength of the inner container; at the same time, lightweight thermal insulation isolation layers are arranged on the inside and outside of the aerogel layer to provide double protection for the inner layer, further increase the stability of the thermal insulation performance of the inner layer, and can also prevent the thermal insulation layer from being damaged due to collision and friction caused by vibration, bumps and other factors of the container, avoid the occurrence of safety hazards, ensure high-performance thermal insulation effect, and improve the overall stability and structural strength of the storage container.

[0023] 5. The utility model provides a lightweight thermal insulation layer composed of an aluminized film layer and a glass fiber layer. The outer wall of the glass fiber layer is in relatively close contact with the inner wall of the aluminized film layer and is bonded and fixed by low-temperature glue to form a shell structure. When the inner layer of the storage container cracks the low-temperature glue due to shrinkage, a vacuum layer will be formed to prevent the crack from continuing to expand, thereby avoiding the formation of channels in the multiple isolation layers and causing the insulation layer to fail, preventing direct heat exchange between the inner layer and the outer shell, and improving the thermal insulation performance of the storage container.

[0024] At the same time, the utility model has a simple structure, significant effects and is suitable for popularization and use.

[0025] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of a low-temperature storage container in an embodiment of the utility model;

[0028] Figure 2 It is a cross-sectional schematic diagram of the inner container and the outer shell of the low-temperature storage container in the embodiment of the utility model;

[0029] Figure 3 It is a schematic overall cross-sectional view of the low-temperature storage container after installation in an embodiment of the utility model.

[0030] Description of the main components in the figure:

[0031] 1. Outer shell; 101. Protective layer; 102. Moisture-proof layer; 103. Glass fiber layer; 2. Inner container; 201. Aluminum-plated film layer; 202. Glass fiber cloth layer; 203. Metal shell wall layer; 204. Ultra-low temperature special glue; 3. Insulation layer; 31. Polyurethane foam layer; 32. Aerogel layer; 4. Lightweight thermal insulation layer; 41. Aluminum film layer; 42. Glass fiber layer; 5. Tank body; 50. Hemispherical head; 501. Large mouth end; 502. Small mouth end; 6. Mounting support; 601. Annular support structure; 602. Mounting part.

[0032] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The embodiment of the utility model discloses a lightweight and long-life cryogenic storage container, which is used for storing cryogenic medium used in aircraft, and is mainly used for storing liquid hydrogen used in aircraft; of course, the cryogenic medium storage container can also store any cryogenic medium, and the cryogenic medium storage container can be set to be used alone; it can also be set to be multiple, and the placement relationship between the multiple storage containers and the specific appearance structure can be set according to the actual placement scene, and the multiple storage containers are used in coordination with each other as a whole.

[0037] like Figures 1 to 3 As shown, in the embodiment of the utility model, the sizes of multiple low-temperature medium storage containers can be the same or different. Generally, when more than three storage containers are set, two storage containers with larger volumes are set on both sides of the storage container with smaller volume, and are cross-arranged, so that the cold energy can be utilized by each other, so that the insulation effect is better; the multiple storage containers are interconnected through their own liquid inlets. During pre-cooling, the medium can flow through the multiple storage containers in turn, so that the heat exchange is sufficient, which can save the pre-cooling medium consumption, and at the same time can reduce the pre-cooling time, so that the whole system is more efficient and has higher performance.

[0038] Preferably, in this embodiment, a storage container with a smaller volume and a storage container with a larger volume are arranged crosswise with each other, and the outer side walls of the two storage containers are in contact with each other to form a container group.

[0039] like Figure 2 As shown, in this embodiment, the cryogenic medium storage container comprises an outer shell 1 and an inner container 2, and the tank body 5 and the hemispherical heads 50 at both ends are composed of the inner container 2 and the outer shell 1, and a plurality of different insulation layers 3 arranged in sequence from the outside to the inside.

[0040] Specifically, Figure 1 As shown, in this embodiment, the cryogenic medium storage container includes two storage containers as an example, the storage container includes a tank body 5, and both ends of the tank body 5 are respectively sealed with hemispherical heads 50 of different sizes. The two storage containers are placed side by side and cross-placed, and the storage container formed as a whole is installed in the aircraft body to jointly provide liquid hydrogen medium for the engine.

[0041] Specifically, in the present embodiment, the tank body 5 is in a circular frustum shape, with one end being a large-mouth end 501 and the opposite end being a small-mouth end 502; one of the hemispherical heads 50 is arranged at the large-mouth end 501 of the tank body 5, and the other is arranged at the small-mouth end 502 of the tank body 5, and the sizes of the openings of the hemispherical heads 50 correspond to the large-mouth end 501 and the small-mouth end 502, respectively, to achieve a sealed connection with each other, thereby ensuring the sealing of the low-temperature medium storage container.

[0042] Specifically, in the present embodiment, the two tank bodies 5 are placed crosswise, with the large mouth end 501 of one storage container corresponding to the small mouth end 502 of the other storage container, and one side of the outer wall of the tank bodies 5 of the two storage containers are fitted together, thereby increasing the contact area and thus improving the pre-cooling speed, thereby improving the insulation efficiency. At the same time, it can also increase the adaptability of the storage container to the setting scene and save space.

[0043] In some specific embodiments, when three tank bodies 5 are placed crosswise, two tank bodies 5 with larger volumes are arranged on both sides of the tank body 5 with smaller volumes, and the large openings 501 of the two tank bodies 5 with larger volumes correspond to the small openings 502 of the tank body 5 with smaller volumes in the middle; of course, the positional relationship between each storage container is not limited to being arranged side by side;

[0044] Preferably, in some specific embodiments, when multiple tank bodies 5 are provided, the radial widths of the tank body 5 with a larger volume are different from those of the tank body 5 with a smaller volume, but the axial lengths are the same, thereby maximizing the mutual contact area and further improving the thermal insulation effect of the storage container.

[0045] like Figure 1 and Figure 3 As shown, in this embodiment, a mounting support 6 is respectively provided near the large mouth end 501 and near the small mouth end of the tank body 5. Of course, the mounting support 6 can also be set to any number; the mounting support 6 includes an annular support structure 601 and a mounting portion 602 connected to the annular support structure 601; the mounting portion 602 is arranged at one end of the annular support structure, which can be any end.

[0046] Preferably, in some specific embodiments, the mounting portion 602 is disposed at the upper end of the annular support structure to suspend the storage container; or is disposed at the lower end of the annular support structure to support the storage container.

[0047] Specifically, in the present embodiment, the annular support structure 601 is a support belt wrapped around and tied to the tank body 5, and is arranged in a ring shape along the circumference of the tank body 5; the mounting portion 602 protrudes upward from the upper end of the annular support belt, and the mounting portion 602 is a vertical mounting protrusion, and its upper end is connected to the wing of the aircraft to be fixed, and is used to firmly fix the tank body 5 inside the wing of the aircraft.

[0048] Preferably, in this embodiment, the small mouth end 502 of the tank body 5 is arranged on the side of the aircraft wing away from the aircraft fuselage, and the large mouth end 501 of the tank body 5 is arranged on the side of the aircraft wing close to the aircraft fuselage, which can further save the overall space occupied by the low-temperature medium storage container.

[0049] In this embodiment, the outermost layer of the tank body 5 of the low-temperature medium storage container is provided with a protective layer 101. When the tank body 5 is provided, the protective layer 101 can be individually provided on the outer wall of each tank body 5, or it can simultaneously cover the outer sides of the multiple tank bodies 5 provided as a whole. The multiple tank bodies 5 share one insulation layer 101, which can further increase the insulation effect of the overall storage container.

[0050] In some specific embodiments, at least one lightweight thermal insulation layer is provided between adjacent thermal insulation layers 3; specifically, a plurality of lightweight thermal insulation layers 4 may be provided between the polyurethane foam layer 31 and the aerogel layer 32, or one lightweight thermal insulation layer 4 may be provided; the lightweight thermal insulation layer 4 may be a lightweight thermal insulation layer 4 of any form; preferably, the radial thickness of the overall lightweight thermal insulation layer 4 is smaller than the radial thickness of the thermal insulation layer 3 of the inner container 2 and the outer shell 1.

[0051] like Figure 2 As shown, in this embodiment, two insulation layers 3 are sequentially arranged from the outside to the inside in the gap between the inner container 2 and the outer shell 1, and a lightweight insulation layer 4 is arranged between the two insulation layers. The lightweight insulation layer 4 is described as a solid insulation layer both inside and outside.

[0052] Specifically, in this embodiment, the thermal insulation layer 3 includes a polyurethane foam layer 31 and an aerogel layer 32, the polyurethane foam layer 31 is connected to the inner wall of the outer shell 1, and the aerogel layer 32 is connected to the outer wall of the inner container 2; of course, the polyurethane foam layer 31 and the aerogel layer 32 can be set with corresponding numbers of layers according to needs.

[0053] Preferably, in this embodiment, the radial thickness of the polyurethane foam layer 31 is greater than the radial thickness of the aerogel layer 32, which can increase the capacity of the storage container.

[0054] Further preferably, the ratio of the radial thickness of the polyurethane foam layer 31 to the radial thickness of the aerogel layer 32 is between 1:1 and 1:0.6.

[0055] In some specific embodiments, the polyurethane foam layer 31 is provided as two layers, and the radial thickness of each polyurethane foam layer 31 is substantially the same as the radial thickness of the aerogel layer 32 .

[0056] like Figure 2As shown, in this embodiment, the lightweight thermal insulation layer 4 includes an aluminized film layer 41 connected to the inner wall of the polyurethane foam layer 31, and a glass fiber layer 42 connected to the outer wall of the aerogel layer 32. The inner wall of the aluminized film layer 41 is in contact with the outer wall of the glass fiber layer 42, and is bonded and fixed by low-temperature glue.

[0057] The aluminized film layer 41 can reflect heat radiation and prevent heat from leaking to the outer layer, further improving the sealing between the inner container 2 and the outer shell 1, thereby improving the overall sealing of the low-temperature medium storage container and improving the thermal insulation effect of the low-temperature medium storage container.

[0058] To be more specific, in the present embodiment, after the glass fiber layer 42 and the aluminized film layer 41 are brushed with low-temperature glue, a shell structure will be formed; when the inner layer located inside the aluminized film layer 41 shrinks due to low temperature, the low-temperature glue and the aerogel layer 32 can absorb the shrinkage of the aluminized film layer 41 caused by the low-temperature medium, thereby improving the strength of the aluminized film layer 41 and stabilizing the thermal insulation performance of the storage container.

[0059] As the use time increases, if the low-temperature glue and the aerogel layer 32 are torn due to the shrinkage of the absorbing inner layer, the torn low-temperature glue can also form a shell structure, which is equivalent to forming a vacuum layer on the inner side of the aluminized film layer 41, which can prevent the cracks from continuing to expand and protect the aluminized film layer 41.

[0060] Preferably, in this embodiment, a plurality of lightweight thermal insulation layers 4 may be provided between the polyurethane foam layer 31 and the aerogel layer 32 to further increase the overall strength of the storage container and extend its service life.

[0061] In some specific embodiments, the radial thicknesses of the aluminized film layer 41 and the glass fiber layer 42 are substantially equal.

[0062] In this embodiment, the outer shell 1 is composed of multiple layers of different materials. The outer shell 1 includes at least a protective layer 101, a moisture-proof layer 102 and a glass fiber layer 103 from the outside to the inside. The inner wall of the protective layer 101 and the outer wall of the moisture-proof layer 102 are bonded together by low-temperature glue, and the inner wall of the moisture-proof layer and the outer wall of the glass fiber layer are bonded together by low-temperature glue, thereby ensuring the high thermal insulation effect of the outer shell 1.

[0063] In some specific embodiments, the radial thicknesses of the protective layer 101 , the moisture-proof layer 102 , and the glass fiber layer 103 are substantially equal.

[0064] Specifically, in the present embodiment, the protective layer 101 is composed of aluminum skin, which has corrosion resistance and pressure resistance, and improves the stability and strength of the protective layer; the moisture-proof layer 102 is composed of mastic, which has strong adaptability, good weather resistance and chemical corrosion resistance, and can maintain its waterproof performance for a long time, thereby ensuring the high moisture-proof performance of the moisture-proof layer 102; and, further combining with the glass fiber layer 103 can increase the adhesion between the layers, so that the low-temperature glue can be applied more evenly, playing a role of hanging glue; thereby, the sealing of the outer shell 1 is further guaranteed, thereby ensuring the high thermal insulation performance of the storage container.

[0065] In some specific embodiments, the inner wall of the glass fiber layer 103 is in contact with the outer wall of the polyurethane foam layer 31 and is bonded and fixed by low-temperature glue.

[0066] Preferably, in this embodiment, a metal layer composed of an aluminized film can be further provided between the moisture-proof layer 102 and the glass fiber layer 103, and a shell structure can be formed after the inner wall of the metal layer and the outer wall of the glass fiber layer 103 are brushed with low-temperature glue;

[0067] When the inner layer located inside the metal layer shrinks due to low temperature, if the low-temperature glue, the aerogel layer 32 and the polyurethane foam layer 31 are torn due to absorbing the shrinkage of the inner layer, a lightweight vacuum layer will be formed, which can prevent the cracks in the inner layer from expanding to the metal layer, and can also absorb the shrinkage of the metal layer caused by the low-temperature medium, thereby improving the strength of the metal layer and protecting the metal layer, thereby stabilizing the thermal insulation performance of the outer shell.

[0068] Preferably, in the present embodiment, the annular support structure 601 is embedded in the protective layer 101 of the outer shell 1, and may also be embedded in the moisture-proof layer 102; or multiple layers are provided at the same time, for example, they are respectively embedded in the protective layer 101 of the outer shell 1, and in the moisture-proof layer 102, and the inner circumference of the annular support structure 601 is abutted against the outer circumference of the glass fiber layer 103, which can improve the stability of the storage container fixed on the wing of the aircraft.

[0069] In this embodiment, the inner container 2 is made of multiple layers of different materials. The inner container 2 includes at least an aluminum-plated film layer 201, a glass fiber cloth layer 202 and a metal shell wall layer 203 from the outside to the inside, which can ensure the sealing of the inner container 2 and improve the overall strength of the inner container 2.

[0070] Specifically, in this embodiment, the inner wall of the glass cloth layer 202 is fixed to the outer wall of the metal shell wall layer 203 by means of ultra-low temperature special glue 204, and the aluminum-plated film layer 201 is wrapped around the outer wall of the glass cloth layer 202. The ultra-low temperature special glue 204 has its own elasticity and toughness, and can absorb the contraction of the metal shell wall layer 203 caused by the low-temperature medium, thereby increasing the strength of the metal shell wall layer 203; and further; the aluminum-plated film layer 201 is wrapped around the outer wall of the glass cloth layer 202, and the aluminum-plated film layer 201 can reflect heat radiation, prevent heat from leaking to the outer layer, and further ensure the sealing and heat preservation effect of the inner container 2;

[0071] To be more specific, in the present embodiment, brushing the surface of the glass cloth layer 202 and the aluminum-coated film layer 201 with the ultra-low temperature special glue 204 will form a shell structure. When the inner layer located inside the aluminum-coated film layer 201 shrinks due to low temperature, the low-temperature glue can absorb the shrinkage of the aluminum-coated film layer 201 caused by the low-temperature medium, and improve the strength of the aluminum-coated film layer 201, thereby stabilizing the thermal insulation performance of the inner container.

[0072] As the usage time increases, the low-temperature glue will be torn due to the shrinkage of the absorbing inner layer. The torn low-temperature glue can also form a shell structure, which is equivalent to forming a vacuum layer on the inner side of the aluminum-plated film layer 201, which can prevent the cracks from continuing to expand and protect the aluminum-plated film layer 201; after the metal shell wall layer 203 fails, the thermal insulation effect of the inner container 2 can still be maintained.

[0073] Preferably, in some specific embodiments, 3 to 4 layers of lightweight vacuum layers can eventually be formed inside the storage container, so that the container insulation layer can only fail and break layer by layer, preventing cracking from the inside to the outside to cause air to enter and form a direct heat exchange between the outside air and the medium in the metal shell wall layer 203, so as to effectively prevent the occurrence of situations such as the entire insulation layer breaking and forming a heat exchange channel due to long-term use, which can significantly increase the life of the insulation layer 3, effectively control the evaporation rate, and overall improve the performance of the storage container and extend its service life.

[0074] Of course, the specific number of lightweight vacuum layers that can eventually be formed in the storage container will vary according to actual conditions, and may be more or less than 3 to 4 layers.

[0075] Preferably, in some specific embodiments, the overall radial thickness of the aluminum-plated film layer 201 , the glass cloth layer 202 and the metal shell wall layer 203 is substantially equal to the radial thickness of the protective layer 101 , the moisture-proof layer 102 and the glass fiber layer 103 of the outer shell.

[0076] Further preferably, the radial thicknesses of the aluminum-plated film layer 201 , the glass cloth layer 202 and the metal shell wall layer 203 are substantially equal.

[0077] In some specific embodiments, the low-temperature glue and the ultra-low-temperature special glue 204 have their own elasticity and toughness, and are about 50 mm thick. They can absorb the shrinkage of the metal wall caused by the low-temperature medium, improve the anti-extrusion performance of the storage container, and further increase the overall strength of the storage container; the thickness of the low-temperature glue and the ultra-low-temperature special glue 204 can be adjusted according to actual conditions.

[0078] Preferably, in this embodiment, the radial thickness of the ultra-low temperature special glue 204 is greater than the radial thickness of the low temperature glue.

[0079] In some possible embodiments, the insulation layer 3 can be a solid insulation layer, or a gaseous insulation layer, or both a solid insulation layer and a gaseous insulation layer can be provided at the same time; moreover, the insulation layer 3 can also be provided with any number of layers, and the corresponding optimal solution can be selected according to the required scene and the conditions such as the low-temperature medium required for insulation.

[0080] In the above embodiment, a lightweight thermal insulation layer is provided between adjacent polyurethane foam layers 31 and aerogel layers 32. The lightweight thermal insulation layer 4 includes an aluminized film layer 41 connected to the inner wall of the polyurethane foam layer 31, and a glass fiber layer 42 connected to the outer wall of the aerogel layer 32. The inner wall of the aluminized film layer 41 and the outer wall of the glass fiber layer 42 are in relative contact with each other and are bonded and fixed by low-temperature glue to form a shell structure.

[0081] When the inner layer of the storage container cracks the low-temperature glue due to shrinkage, a lightweight vacuum layer will be formed to isolate adjacent insulation layers, which can prevent the cracks from continuing to expand, avoid cross-contact between adjacent insulation layers, and cause the formation of channels in the multiple isolation layers to make the insulation layers fail, prevent direct heat exchange between the inner layer and the outer shell, and improve the insulation performance of the storage container.

[0082] In this embodiment, the polyurethane foam layer 31 has low thermal conductivity and good cold preservation performance, and can improve the thermal insulation effect of the outer shell 1; the aerogel layer 32 is soft and has strong plasticity, can better fit the shape of the storage container, has strong resistance to low temperatures, can increase the strength of the inner container 2, and then increase the overall strength of the inner container 2 and the outer shell 1, and can avoid damage to the insulation layer caused by collision and friction between the inner container 2 and the outer shell 1 of the storage container due to vibration, bumps and other factors, thereby avoiding the occurrence of safety hazards, ensuring high-performance thermal insulation effect, improving the overall stability and structural strength of the storage container, and further improving the thermal insulation effect of the container.

[0083] In the above embodiments, the materials of the aluminum-plated film layer 201 and the aluminized film layer 41 are all film materials with a layer of aluminum plated on the surface; and the materials of the glass fiber layer 103, the glass fiber cloth layer 202, and the glass fiber layer are all cloth-like materials woven from glass fiber fibers; and the low-temperature glue and the ultra-low-temperature special glue 204 are both glues that can be quickly cured under low temperature conditions; the above are just named differently to better distinguish the setting positions.

[0084] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A lightweight, long-life cryogenic storage container, characterized in that: include, The tank body (5) is in the shape of a circular frustum; Hemispherical sealing heads (50) are respectively installed at two ends of the circular frustum-shaped tank body (5) and have different sizes installed at the two ends of the tank body (5); The tank body (5) and the hemispherical heads (50) at both ends are both composed of a plurality of different thermal insulation layers (3).

2. A lightweight, long-life cryogenic storage container according to claim 1, characterized in that: The tank body (5) comprises a large-mouth end (501) and a small-mouth end (502), which are respectively arranged to correspond to the hemispherical heads (50) of different sizes; The tank body (5) is provided with at least one annular support structure (601) disposed around the circumference of the tank body (5) at a position close to the large opening end (501) and at a position close to the small opening end (502). One end of the annular support structure (601) is provided with a mounting portion (602), and the mounting portion (602) radially protrudes outward from the annular support structure (601) and is connected to the wing of the aircraft to be fixed.

3. A lightweight, long-life cryogenic storage container according to claim 2, characterized in that: The annular support structure (601) is embedded between two adjacent thermal insulation layers (3) in the tank body (5), and the inner circumference of the annular support structure (601) abuts against the outer circumference of the thermal insulation layer (3) arranged on its inner circumference.

4. A lightweight, long-life cryogenic storage container according to claim 3, characterized in that: An outer shell (1) consisting of the tank body (5) and the hemispherical end cap (50) is arranged inside and outside the inner container (2); The multiple different thermal insulation layers (3) are arranged in sequence from the outside to the inside between the inner container (2) and the outer container (1).

5. A lightweight, long-life cryogenic storage container according to claim 4, characterized in that: The outer shell (1) comprises at least a protective layer (101), a moisture-proof layer (102) and a glass fiber layer (103) from the outside to the inside, and the layers are bonded to each other via low-temperature adhesive; The protective layer (101) is made of aluminum foil, and the moisture-proof layer (102) is made of mastic.

6. A lightweight, long-life cryogenic storage container according to claim 4, characterized in that: The inner container (2) comprises at least, from the outside to the inside, an aluminum-plated film layer (201), a glass fiber cloth layer (202) and a metal shell wall layer (203); The inner wall of the glass fiber cloth layer (202) is glued and fixed to the outer wall of the metal shell wall layer (203) by using a special ultra-low temperature adhesive (204), and the aluminum-plated film layer (201) is wrapped around the outer wall of the glass fiber cloth layer (202); The radial thicknesses of the aluminum-plated film layer (201), the glass fiber cloth layer (202) and the metal shell wall layer (203) are substantially equal.

7. A lightweight, long-life cryogenic storage container according to any one of claims 1 to 6, characterized in that: The plurality of different thermal insulation layers (3) at least include: A polyurethane foam layer (31) connected to the inner wall of the outer shell (1); an aerogel layer (32) connected to the outer wall of the inner container (2); A lightweight thermal insulation layer (4) is provided between the polyurethane foam layer (31) and the aerogel layer (32), between the inner container (2) and the aerogel layer (32), or between the outer shell (1) and the polyurethane foam layer (31).

8. A lightweight, long-life cryogenic storage container according to claim 7, characterized in that: The lightweight thermal insulation layer (4) comprises at least an aluminized film layer (41) and a glass fiber layer (42). The outer wall of the glass fiber layer (42) is in contact with the inner wall of the aluminized film layer (41) and is bonded and fixed with low-temperature glue.

9. A lightweight, long-life cryogenic storage container according to claim 7, characterized in that: The ratio of the radial thickness of the polyurethane foam layer (31) to the radial thickness of the aerogel layer (32) is between 1:1 and 1:0.

6.

10. A lightweight, long-life cryogenic storage container according to any one of claims 4 to 6, characterized in that: It comprises at least two outer shells (1) placed crosswise, and the outer side walls of adjacent outer shells (1) are at least partially arranged to fit each other.

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