A deep cryogenic liquid transport container, vehicle

Abstract

The application provides a kind of cryogenic liquid transport container, vehicle.The transport container includes outer tank body and the inner tank body being arranged in outer tank body, the outer side of the cylinder of outer tank body is provided with outer support structure;It also includes static support structure and dynamic support structure, static support structure is arranged in the annular space between inner tank body and outer tank body, the first end of static support structure is fixedly connected with the inner wall of outer tank body, and the second end is switchably connected with the outer wall of the cylinder of inner tank body in disengagement-contact;The first end of dynamic support structure is fixedly connected with the outer wall of the cylinder of inner tank body, and the second end passes through the cylinder of outer tank body and is telescopically connected with it in sealing manner.During transportation, the second end of dynamic support structure is contracted in the direction close to annular space, and the second end of static support structure is disengaged from the outer wall of the cylinder of inner tank body;When placed, the second end of dynamic support structure is stretched in the direction away from annular space, and the second end of static support structure is in contact with the outer wall of the cylinder of inner tank body.

Description

Technical Field

[0001] The present invention belongs to the technical field of cryogenic pressure vessels, and in particular relates to a deep cryogenic liquid transport container and vehicle. Background Art

[0002] The application of liquid hydrogen in the civilian field, especially its promotion in the transportation field, is considered to have broad prospects. For example, heavy-duty transport trucks, airplanes, ships and other means of transportation can use liquid hydrogen power to reduce carbon emissions during operation and achieve a longer driving range.

[0003] Many countries and regions have conducted varying degrees of research on onboard liquid hydrogen storage systems, developing dozens of prototypes of liquid hydrogen-powered vehicles, including passenger cars, buses, and trucks. Simultaneously, research on liquid hydrogen for aviation propulsion is also intensifying, encompassing liquid hydrogen-powered engines, efficient liquid hydrogen storage equipment, liquid hydrogen delivery systems, and test equipment.

[0004] Therefore, it is very necessary to study how transport containers can simultaneously meet the strength requirements of liquid hydrogen transportation and the requirements of low heat leakage loss during parking.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to at least overcome some of the shortcomings of the existing technology and provide a deep-cryogenic liquid transport container. By arranging a static support structure and a dynamic support structure between the inner tank body and the outer tank body of the transport container, when the transport container is in a transport state, the second end of the dynamic support structure contracts toward the direction of the annular space between the inner tank body and the outer tank body under the support action of the support platform until the second end of the static support structure is out of contact with the outer wall of the cylinder of the inner tank body. When the transport container is in a placed state, the second end of the dynamic support structure is out of contact with the support platform and extends toward the direction away from the annular space between the inner tank body and the outer tank body until the second end of the static support structure is in contact with the outer wall of the cylinder of the inner tank body. In this way, the corresponding support structure can be used to bear the weight and load of the inner tank body in different states, thereby achieving the purpose of simultaneously meeting the strength requirements of liquid hydrogen transportation and the low heat leakage loss requirements during parking.

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

[0008] A cryogenic liquid transport container comprises an outer tank body and an inner tank body arranged in the outer tank body, wherein an outer support structure is arranged outside the cylinder of the outer tank body;

[0009] Also includes:

[0010] a static support structure disposed in the annular space between the inner tank body and the outer tank body, wherein a first end of the static support structure is fixedly connected to the inner wall of the outer tank body, and a second end of the static support structure is switchably connected to the outer wall of the cylindrical body of the inner tank body in a disengageable and contactable manner;

[0011] a dynamic support structure, wherein a first end of the dynamic support structure is fixedly connected to the outer wall of the cylinder of the inner tank body, and a second end of the dynamic support structure passes through the cylinder of the outer tank body and is sealed and telescopically connected thereto;

[0012] Wherein, when the transport container is in the transport state, the second end of the dynamic support structure is retracted toward the annular space between the inner tank body and the outer tank body under the support of the support platform until the second end of the static support structure is out of contact with the outer wall of the inner tank body;

[0013] When the transport container is in a placed state, the second end of the dynamic support structure separates from the support platform and extends in a direction away from the annular space between the inner tank body and the outer tank body until the second end of the static support structure contacts the outer wall of the inner tank body.

[0014] In some embodiments, the static support structure includes a boom and lifting lugs;

[0015] Among them, the first end of the lifting rod is fixedly connected to the inner wall of the outer tank body, and the second end is provided with a slot extending in the vertical direction. The lifting ear is fixedly connected to the outer wall of the cylinder of the inner tank body, and the slot and the lifting ear can be switched between disengagement and contact.

[0016] In some embodiments, the width of the slot in the axial direction of the transport container is greater than the width of the lifting ear in the axial direction of the transport container;

[0017] The length of the slot in the vertical direction matches the telescopic length of the second end of the dynamic support structure.

[0018] In some embodiments, the boom is made of carbon fiber composite material;

[0019] Wherein, the suspension rod is fixedly connected to the inner wall of the outer tank body through a top support.

[0020] In some embodiments, in the vertical direction, the first end of the suspension rod is higher than the second end of the suspension rod, and the angle between the suspension rod and the vertical direction is in the range of 40° to 50°.

[0021] In some embodiments, the outer tank body is provided with leg through-holes;

[0022] Wherein, the dynamic support structure comprises inner tank legs and elastic supports, wherein the elastic supports are located outside the outer tank and are thermally adiabatically sealed with the legs through holes;

[0023] The first end of the inner tank body support leg is fixedly connected to the outer wall of the cylinder of the inner tank body, and the second end of the inner tank body support leg contracts and stretches in the direction of approaching and moving away from the annular space between the inner tank body and the outer tank body through the support leg perforation.

[0024] In some embodiments, the elastic support adopts a bellows structure.

[0025] In some embodiments, the inner tank legs are made of epoxy fiberglass.

[0026] In some embodiments, an injection pipe and / or an outlet pipe for cryogenic liquid is connected between the outer tank body and the inner tank body;

[0027] Wherein, the injection pipe and / or the outlet pipe adopts a flexible connecting pipe.

[0028] The present invention also provides a vehicle comprising a support platform and the cryogenic liquid transport container described above.

[0029] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0030] 1. The cryogenic liquid transport container provided by the present invention provides a static support structure and a dynamic support structure between the inner tank body and the outer tank body of the transport container. When the transport container is in the transport state, the second end of the dynamic support structure contracts toward the annular space between the inner tank body and the outer tank body under the support action of the support platform until the second end of the static support structure is out of contact with the cylindrical outer wall of the inner tank body. When the transport container is in the placed state, the second end of the dynamic support structure is out of contact with the support platform and extends toward the annular space between the inner tank body and the outer tank body until the second end of the static support structure is in contact with the cylindrical outer wall of the inner tank body. In this way, the corresponding support structure can be used in different states to bear the weight and load of the inner tank body, thereby achieving the purpose of simultaneously meeting the strength requirements for cryogenic liquid transportation and the requirements for low heat leakage loss when parked.

[0031] 2. The cryogenic liquid transport container provided by the present invention can adapt to the axial thermal expansion and contraction of the inner tank body caused by temperature changes by making the width of the card slot in the axial direction of the transport container greater than the width of the lifting ear in the axial direction of the transport container, thereby ensuring that the second end of the static support structure can be switched to a detachable and contactable connection with the outer wall of the cylindrical body of the inner tank body.

[0032] 3. The cryogenic liquid transport container provided by the present invention uses a carbon fiber composite material to manufacture the suspension rod, thereby reducing heat conduction and heat leakage loss while ensuring strength.

[0033] 4. The cryogenic liquid transport container provided by the present invention adopts a bellows structure for the elastic support. After leaving the support platform, the elastic support can rebound in the direction away from the inner tank body support legs, thereby separating the two, so that external heat cannot be transferred to the inner tank body through the elastic support, thereby reducing heat leakage loss.

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0036] Figure 1 is a partial structural schematic diagram of a cryogenic liquid transport container provided according to an exemplary embodiment of the present invention;

[0037] Figure 2 yes Figure 1 A partial enlarged view of the structure in the middle.

[0038] In the figure: 100, transport container;

[0039] 110. Outer tank body; 111. Leg perforations; 120. Inner tank body; 130. Vacuum multi-layer insulation layer; 140. Outer support structure; 150. Static support structure; 151. Hanging rod; 152. Lifting lug; 153. Slot; 160. Dynamic support structure; 161. Inner tank body legs; 162. Elastic support; 170. Injection pipe; 180. Export pipe.

[0040] 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

[0041] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are 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 limiting the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] As described in the background technology of this application, it is very necessary to study how transport containers can simultaneously meet the strength requirements of cryogenic liquid transportation and the requirements of low heat leakage loss when parked for the application of cryogenic liquid in the civilian field. Based on this, the present invention provides a cryogenic liquid transport container, comprising an outer tank body and an inner tank body arranged in the outer tank body, an outer support structure is arranged on the outer side of the cylinder of the outer tank body, and the cryogenic liquid transport container also includes a static support structure and a dynamic support structure. The static support structure is arranged in the annular space between the inner tank body and the outer tank body, the first end of the static support structure is fixedly connected to the inner wall of the outer tank body, and the second end is switchably connected to the outer wall of the cylinder of the inner tank body in a disengageable-contact manner, the first end of the dynamic support structure is fixedly connected to the outer wall of the cylinder of the inner tank body, and the second end passes through the cylinder of the outer tank body and is sealed and telescopically connected thereto.

[0045] When the transport container is in a transport state, the second end of the dynamic support structure contracts toward the annular space between the inner tank body and the outer tank body under the support of the support platform, until the bottom of the second end of the dynamic support structure is on the same horizontal plane as the bottom of the outer support structure, and the second end of the static support structure is out of contact with the outer wall of the cylinder of the inner tank body; when the transport container is in a placed state, the second end of the dynamic support structure is out of contact with the support platform and extends toward the annular space between the inner tank body and the outer tank body, until the second end of the static support structure is in contact with the outer wall of the cylinder of the inner tank body.

[0046] Through the above scheme, corresponding support structures can be used in different states to bear the weight and load of the inner tank body, thereby achieving the purpose of simultaneously meeting the strength requirements for deep-cryogenic liquid transportation and the requirements for low heat leakage loss during parking.

[0047] The cryogenic liquid mentioned above is, for example, liquid helium, liquid hydrogen, liquid nitrogen, etc.

[0048] In some embodiments, the cryogenic liquid transport container is a horizontal container, and the cryogenic liquid is liquid hydrogen, which can be used to provide hydrogen fuel for hydrogen-powered vehicles. It is understood that under such operating conditions, the capacity of the cryogenic liquid transport container is relatively small.

[0049] In some other embodiments, the cryogenic liquid transport container is a vehicle-mounted transport tank for transporting cryogenic liquid. It is understood that under such working conditions, the capacity of the cryogenic liquid transport container is relatively large.

[0050] The preferred technical solution of the cryogenic liquid transport container provided by the present invention will be described in detail below with reference to the accompanying drawings, taking liquid hydrogen as an example of the cryogenic liquid.

[0051] Figure 1 1 is a partial structural diagram of a cryogenic liquid transport container 100 according to an exemplary embodiment of the present invention. Figure 2 yes Figure 1 A partial enlarged view of the structure at point A in FIG. It should be noted that the shapes, proportions, dimensions, and orientations of the components in the figure are merely illustrative, intended to facilitate understanding of the present invention, and are not intended to limit the shapes, proportions, dimensions, and orientations of the components of the present invention. Those skilled in the art, after understanding the inventors' teachings, will be able to implement the invention based on their existing technical knowledge and experience.

[0052] like Figure 1 and Figure 2 As shown, the cryogenic liquid transport container 100 includes an outer tank body 110 and an inner tank body 120 disposed within the outer tank body 110. A vacuum insulation cavity is formed between the outer tank body 110 and the inner tank body 120. Multiple layers of insulation material are disposed within the vacuum insulation cavity to form a vacuum multi-layer insulation layer 130 sandwiched within the annular space between the outer tank body 110 and the inner tank body 120. An external support structure 140 is disposed on the outer side of the cylinder of the outer tank body 110 to bear the weight of the inner and outer tank bodies 110 and the cryogenic liquid.

[0053] As an example, the outer support structure 140 is a leg-shaped structure, and four outer support structures 140 are provided at the bottom of the outer tank body 110 to form a stable structure with four legs supporting.

[0054] Refer again Figure 1 The cryogenic liquid transport container 100 also includes a static support structure 150 for supporting the weight of the inner tank body 120 and the cryogenic liquid therein when the hydrogen energy vehicle is in a parked state, and a dynamic support structure 160 for supporting the weight and impact force of the inner tank body 120 and the cryogenic liquid therein when the hydrogen energy vehicle is in a driving state.

[0055] Among them, the static support structure 150 is arranged in the annular space between the inner tank body 120 and the outer tank body 110. The first end of the static support structure 150 is fixedly connected to the inner wall of the outer tank body 110, and the second end is switchably connected to the outer wall of the cylinder of the inner tank body 120 in a disengageable and contactless manner. The first end of the dynamic support structure 160 is fixedly connected to the outer wall of the cylinder of the inner tank body 120, and the second end passes through the cylinder of the outer tank body 110 and is sealed and telescopically connected to it.

[0056] When the hydrogen-powered vehicle is in motion, the cryogenic liquid transport container 100 is in a transport state. The second end of the dynamic support structure 160, supported by the support platform, contracts toward the annular space between the inner tank 120 and the outer tank 110 until the bottom of the second end of the dynamic support structure 160 is approximately level with the bottom of the outer support structure 140, and the second end of the static support structure 150 is released from contact with the outer wall of the inner tank 120. At this point, because the second end of the static support structure 150 is released from contact with the outer wall of the inner tank 120, the weight of the inner tank 120 and the cryogenic liquid therein, as well as the impact force generated by the liquid flow, are fully borne by the dynamic support structure 160. The second end of the dynamic support structure 160 is now supported on the support platform outside the cryogenic liquid transport container 100. This ensures relatively stable support for the weight of the inner tank 120 and the cryogenic liquid therein, as well as the impact force generated by the liquid flow, meeting the strength requirements during transportation.

[0057] When the hydrogen-powered vehicle is parked, the cryogenic liquid transport container 100 is in a placed state, and the second end of the dynamic support structure 160 detaches from the support platform and extends away from the annular space between the inner tank body 120 and the outer tank body 110 until the second end of the static support structure 150 contacts the outer wall of the inner tank body 120. At this time, because the second end of the dynamic support structure 160 is detached from the support platform, the weight of the inner tank body 120 and the cryogenic liquid therein is shared by the outer support structure 140 and the static support structure 150. The static support structure 150 is entirely located in the annular space between the inner tank body 120 and the outer tank body 110 and is not in contact with the external environment. This greatly reduces heat leakage transferred from the outer tank body 110 to the inner tank body 120, reduces heat loss, and can meet the requirement of low leakage loss when parked.

[0058] Furthermore, the weight of the inner tank 120 and the cryogenic liquid therein is jointly supported by the outer support structure 140 and the static support structure 150, which reduces the designed pressure bearing capacity of the static support structure 150. In other words, this solution reduces the support strength of the static support structure 150, adjusts the stress distribution of the entire cryogenic liquid transport container 100 in its storage state, and optimizes the overall structure.

[0059] In some embodiments, the above-mentioned support platform is movably connected to the hydrogen energy vehicle. Before the cryogenic liquid transport container 100 is in the transport state, it is placed on the bottom of the outer support structure 140, so that the second end of the dynamic support structure 160 is contracted toward the direction of the annular space between the inner tank body 120 and the outer tank body 110 until the bottom of the second end of the dynamic support structure 160 is on the same horizontal plane as the bottom of the outer support structure 140.

[0060] When the cryogenic liquid transport container 100 is in a placed state, the support platform is removed from the bottom of the cryogenic liquid transport container 100. It should be noted that the bottom of the outer support structure 140 always contacts the bottom of the placement compartment of the hydrogen vehicle used to accommodate the cryogenic liquid transport container 100. After the support platform is removed from the bottom of the cryogenic liquid transport container 100, there is a space between the bottom of the second end of the dynamic support structure 160 and the bottom of the placement compartment, allowing the second end of the dynamic support structure 160 to extend away from the annular space between the inner tank body 120 and the outer tank body 110.

[0061] As an example, the bottom of the placement cabin is a "concave" structure, that is, it has a protruding portion and a concave portion. The bottoms of the four external support structures 140 are arranged in pairs, respectively, to abut the protruding portions at their ends. The bottom of the second end of the dynamic support structure 160 faces the concave portion in the middle. The support platform is removably placed in the concave portion.

[0062] In other embodiments, the support platform may be connected to a drive structure for driving the support platform to rise and fall. Optionally, the drive structure may be a screw drive structure, a hydraulic drive structure, or the like. The drive structure may be disposed below the placement cabin and configured to drive the support platform to rise and fall, enabling the support platform to switch between supporting the second end of the dynamic support structure 160 and disengaging the second end from the dynamic support structure 160.

[0063] In some embodiments, as Figure 2As shown, the static support structure 150 includes a suspension rod 151 and a lifting lug 152, wherein the first end of the suspension rod 151 is fixedly connected to the inner wall of the outer tank body 110, and the second end of the suspension rod 151 is provided with a slot 153 extending in the vertical direction, and the lifting lug 152 is fixedly connected to the outer wall of the cylinder of the inner tank body 120, and the slot 153 and the lifting lug 152 can be switched in a disengageable and contactable manner.

[0064] As an example, the static support structure 150 includes four sets of suspension rods 151 and suspension lugs 152, distributed at relatively large locations within the annular space between the inner tank 120 and the outer tank 110. Optionally, vertically, the first end of the suspension rod 151 is higher than the second end of the suspension rod 151, and the angle between the suspension rod 151 and the vertical direction ranges from 40° to 50°. Preferably, the angle between the suspension rod 151 and the vertical direction is 45°.

[0065] In the above solution, the suspension rod 151 is a slender rod-shaped structure with a small cross-sectional area. The overall heat introduced per unit time is small, and heat leakage is reduced on the basis of sufficient support.

[0066] Specifically, the first end of the suspension rod 151 is fixedly connected to the end cap of the outer tank 110, or to the supporting cylinder that forms a common vacuum chamber with the outer tank 110. The second end of the suspension rod 151 defines a vertically extending oblong hole-shaped slot 153. One end of the lifting lug 152 is fixedly connected to the outer wall of the inner tank 120, and the other end extends in a generally horizontal direction.

[0067] When the second end of the dynamic support structure 160 contracts toward the annular space between the inner tank body 120 and the outer tank body 110 under the support of the support platform, the lifting lug 152 fixed to the inner tank body 120 also moves upward. Since the suspension rod 151 is fixed to the outer tank body 110, the lifting lug 152 can be separated from the retaining groove 153 during the upward movement, so that there is no mutual force between the suspension rod 151 and the inner tank body 120, and the suspension rod 151 does not bear the impact load of transportation. As a result, the gravity and load of the inner tank body 120 and the liquid therein are fully applied to the dynamic support structure 160.

[0068] When the second end of the dynamic support structure 160 separates from the support platform and extends in the direction away from the annular space between the inner tank body 120 and the outer tank body 110, the lifting lug 152 fixed to the inner tank body 120 also moves downward. As mentioned above, since the lifting rod 151 is fixed to the outer tank body 110, the lifting lug 152 can abut against the upper wall of the slot 153 during the downward movement, so that the lifting rod 151 can lift the inner tank body 120 and bear the weight of the inner tank body 120 and the liquid inside. At the same time, the lifting rod 151 transfers the force to the outer tank body 110 and the outer support structure 140, thereby allowing the outer support structure 140 to bear the weight of the inner and outer tank bodies 110 at the same time and transfer it to the bottom of the placement cabin.

[0069] In some embodiments, the width of the slot 153 in the axial direction of the transport container 100 is greater than the width of the lug 152 in the axial direction of the transport container 100; the length of the slot 153 in the vertical direction matches the telescopic length of the second end of the dynamic support structure 160.

[0070] The above solution can adapt to the axial thermal expansion and contraction of the inner tank body 120 caused by temperature changes, ensuring that the second end of the static support structure 150 can be switched to the outer wall of the inner tank body 120 in a detachable and contactable manner.

[0071] As an example, the suspension rod 151 is made of carbon fiber composite material, wherein the suspension rod 151 is fixedly connected to the inner wall of the outer tank body 110 through a top support.

[0072] It's important to note that carbon fiber composite material is a high-strength fiber composite material with high strength and low thermal conductivity. As previously mentioned, the suspender 151 only lifts the inner tank 120 while it's in its resting position and doesn't bear the impact loads of transportation. Therefore, compared to existing steel support structures, the present invention can reduce heat leakage while maintaining sufficient support capacity.

[0073] In addition, reinforcing plates may be added at the position where the lifting lug 152 is connected on the inner tank body 120 and at the position where the suspension rod 151 is connected on the outer tank body 110 to increase the local strength of the position.

[0074] In some embodiments, again referring to Figure 2, a leg through-hole 111 is opened on the cylinder of the outer tank body 110; wherein, the dynamic support structure 160 includes an inner tank body leg 161 and an elastic support 162, the elastic support 162 is located outside the outer tank body 110, and is adiabatically and sealedly connected to the leg through-hole 111; the first end of the inner tank body leg 161 is fixedly connected to the outer wall of the cylinder of the inner tank body 120, and the second end of the inner tank body leg 161 contracts and stretches in the direction of approaching and moving away from the annular space between the inner tank body 120 and the outer tank body 110 through the leg through-hole 111.

[0075] As an example, the outer tank body 110 is provided with four leg perforations 111. Four sets of inner tank legs 161 and elastic supports 162 are provided to match these holes and are distributed below the inner tank body 120. It should be noted that the four sets of inner tank legs 161 and elastic supports 162 correspond one-to-one with the four outer support structures 140, with a relatively small distance between them. In other words, the inner tank legs 161 and elastic supports 162 are positioned in close proximity to the outer support structures 140. Preferably, the inner tank legs 161 and elastic supports 162 are positioned inboard of the outer support structures 140.

[0076] Specifically, in the transport state, the support platform first contacts the bottom of the elastic support 162. Under the support of the support platform, the elastic support 162 contracts. When the bottom of the elastic support 162 touches the bottom of the inner tank leg 161, the inner tank leg 161 moves upward under the support of the support platform, driving the inner tank 120 and the lifting ear 152 provided on the inner tank 120 to move upward, and the lifting ear 152 is disengaged from the contact with the slot 153 on the suspension rod 151.

[0077] In the placed state, after the support platform is separated from the elastic support 162, the bottom of the elastic support 162 extends under the action of the rebound force, and the bottom of the elastic support 162 separates from the bottom of the inner tank leg 161. The inner tank 120 moves downward under the action of its own weight and the weight of the cryogenic liquid inside. When the lifting lug 152 contacts the retaining groove 153, the inner tank 120 is lifted by the lifting rod 151, and the inner tank 120 stops its downward movement. At this time, the bottom of the elastic support 162 is separated from the bottom of the inner tank leg 161, and heat cannot be directly transferred from the outside to the inner tank 120, and heat leakage is very small.

[0078] In some embodiments, the elastic support 162 is a bellows structure. The inner tank legs 161 are made of epoxy glass fiber reinforced plastic.

[0079] It should be noted that the bellows structure has the ability to freely expand under vacuum pressure difference. The epoxy fiberglass material can reduce heat leakage while having sufficient support capacity.

[0080] In some embodiments, a cryogenic liquid injection pipe 170 and / or discharge pipe 180 are connected between the outer tank 110 and the inner tank 120. Flexible connecting pipes are used for the injection pipe 170 and / or discharge pipe 180. In this embodiment, the flexible pipe system can accommodate a certain vertical relative displacement between the inner tank 120 and the outer tank 110.

[0081] In some embodiments, the outer surface of the inner tank body 120, the outer surface of the injection pipe 170 and / or the outer surface of the outlet pipe 180, the outer surface of the hanger 151, the outer surface of the lifting ear 152, the outer surface of the inner tank body leg 161, etc. are all covered with multiple layers of anti-radiation super insulation material, which greatly reduces the radiation heat transfer between the inner tank body 110.

[0082] The present invention further provides a vehicle, comprising a support platform and the cryogenic liquid transport container 100 described above. The vehicle may be a hydrogen fuel vehicle or other transport vehicle.

[0083] The above description is merely 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 above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. 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 solution of the present invention.

Claims

1. A cryogenic liquid transport container, the transport container being mounted on a vehicle, the vehicle comprising a support platform, the transport container comprising an outer tank body and an inner tank body disposed within the outer tank body, the outer side of the outer tank body being provided with an external support structure; It is characterized by: Also includes: a static support structure disposed in the annular space between the inner tank body and the outer tank body, wherein a first end of the static support structure is fixedly connected to the inner wall of the outer tank body, and a second end of the static support structure is switchably connected to the outer wall of the cylindrical body of the inner tank body in a disengageable and contactable manner; a dynamic support structure, wherein a first end of the dynamic support structure is fixedly connected to the outer wall of the cylinder of the inner tank body, and a second end of the dynamic support structure passes through the cylinder of the outer tank body and is sealed and telescopically connected thereto; Wherein, when the transport container is in the transport state, the second end of the dynamic support structure is retracted toward the annular space between the inner tank body and the outer tank body under the support of the support platform until the second end of the static support structure is out of contact with the outer wall of the inner tank body; When the transport container is in a placed state, the second end of the dynamic support structure separates from the support platform and extends in a direction away from the annular space between the inner tank body and the outer tank body until the second end of the static support structure contacts the outer wall of the inner tank body.

2. The cryogenic liquid transport container according to claim 1, characterized in that: The static support structure includes a boom and a lifting lug; Among them, the first end of the lifting rod is fixedly connected to the inner wall of the outer tank body, and the second end is provided with a slot extending in the vertical direction. The lifting ear is fixedly connected to the outer wall of the cylinder of the inner tank body, and the slot and the lifting ear can be switched between disengagement and contact.

3. The cryogenic liquid transport container according to claim 2, characterized in that: The width of the clamping slot in the axial direction of the transport container is greater than the width of the lifting ear in the axial direction of the transport container; The length of the slot in the vertical direction matches the telescopic length of the second end of the dynamic support structure.

4. The cryogenic liquid transport container according to claim 2, characterized in that: The boom is made of carbon fiber composite material; Wherein, the suspension rod is fixedly connected to the inner wall of the outer tank body through a top support.

5. The cryogenic liquid transport container according to claim 2, characterized in that ； In the vertical direction, the first end of the suspension rod is higher than the second end of the suspension rod, and the angle between the suspension rod and the vertical direction is in the range of 40° to 50°.

6. The cryogenic liquid transport container according to any one of claims 1 to 5, characterized in that: The outer tank body is provided with leg holes on the cylinder; Wherein, the dynamic support structure comprises inner tank legs and elastic supports, wherein the elastic supports are located outside the outer tank and are thermally adiabatically sealed with the legs through holes; The first end of the inner tank body support leg is fixedly connected to the outer wall of the cylinder of the inner tank body, and the second end of the inner tank body support leg contracts and stretches in the direction of approaching and moving away from the annular space between the inner tank body and the outer tank body through the support leg perforation.

7. The cryogenic liquid transport container according to claim 6, characterized in that: The elastic support adopts a bellows structure.

8. The cryogenic liquid transport container according to claim 6, characterized in that: The inner tank body legs are made of epoxy glass fiber reinforced plastic.

9. The cryogenic liquid transport container according to any one of claims 1 to 5, characterized in that: An injection pipe and / or an outlet pipe for cryogenic liquid are connected between the outer tank body and the inner tank body; Wherein, the injection pipe and / or the outlet pipe adopts a flexible connecting pipe.

10. A vehicle, characterized in that: The invention comprises a supporting platform and a cryogenic liquid transport container according to any one of claims 1 to 9.

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