Elastic composite supporting and fixing structure suitable for airborne liquid hydrogen storage tank

Abstract

The invention discloses an elastic composite supporting and fixing structure suitable for an airborne liquid hydrogen storage tank, and relates to the field of aviation liquid hydrogen power. The cross-shaped hoop sleeve comprises a transverse hoop and a longitudinal hoop, the middle of the transverse hoop and the middle of the longitudinal hoop are perpendicular and fixedly connected, the two ends of the transverse hoop and the two ends of the longitudinal hoop are bent towards the same side, and the ends of the transverse hoop and the ends of the longitudinal hoop are used for being fixedly connected with a cabin. The crossed part of the transverse shroud ring and the longitudinal shroud ring is opposite to the positioning groove; and the elastic module is connected to the transverse shroud ring and the longitudinal shroud ring. And universality is achieved for supporting modes of different forms of liquid hydrogen storage tanks.

Description

Technical Field

[0001] The present application belongs to the field of aviation liquid hydrogen power, specifically to the field of support and fixation technology for cryogenic liquid hydrogen storage tanks when used in aircraft, and relates to a composite elastic fixing device suitable for liquid hydrogen storage tanks when they are installed. Background Art

[0002] As global climate change becomes increasingly severe, the aviation industry, as a major source of carbon emissions, faces immense pressure to reduce them. Data from the International Civil Aviation Organization (ICAO) shows that aviation emissions account for approximately 10% of global transportation emissions and 2% of global carbon emissions, a proportion that is growing annually. Therefore, the aviation industry must accelerate its low-carbon transition to reduce its contribution to climate change.

[0003] At present, aircraft are gradually developing towards hydrogen power systems. Compared with other fuels, liquid hydrogen has high energy density, low environmental impact, and a wide range of energy utilization methods. Its mass energy density is 120MJ / kg, while conventional aviation kerosene fuel is about 43MJ / kg. At standard atmospheric pressure, the density of aviation kerosene is about 770-800kg / m 3 , the density of liquid hydrogen is about 70.85kg / m 3 In practical applications, 4 liters of liquid hydrogen can produce the energy of 1 liter of jet fuel, saving 63% to 65% of payload weight per liter of fuel stored. This high energy density can significantly extend the flight time and increase the payload of hydrogen commuter aircraft, while also significantly reducing carbon emissions from aircraft.

[0004] In recent years, domestic research on liquid hydrogen power systems for aircraft is developing from the theoretical research stage to the actual engineering verification stage. At present, the fixed support methods commonly used for liquid hydrogen storage tanks in aircraft mainly include thrust pin-shaft connection structure, skirt support structure, clamp bracket bolt fixed installation structure, etc. The above-mentioned fixed support structures and methods have certain limitations, and special designs are required in parts such as the head or cylinder of the liquid hydrogen storage tank to prevent local stress concentration and damage to the storage tank and support structure. This also leads to certain limitations in the shape and structure design of liquid hydrogen storage tanks, and the support methods for different forms of liquid hydrogen storage tanks need to be designed separately, which is not universal. Summary of the Invention

[0005] The technical problem solved by the present application is to overcome the deficiencies of the prior art and provide an elastic composite support fixing structure suitable for liquid hydrogen storage tank installation, which is universal for supporting methods of different forms of liquid hydrogen storage tanks.

[0006] During installation of the liquid hydrogen tank, this structure is independent of the tank, eliminating the need for special design of the tank's main structure and ensuring universal applicability. Furthermore, by adding elastic modules in the transverse and longitudinal directions of the structure and leveraging the inherent elasticity, strength, and thermal insulation properties of materials such as rigid polyurethane foam, heat leakage from the support connection between the liquid hydrogen tank and the cabin is reduced to a certain extent, and damage to the tank and supporting structure caused by the high acceleration and vibration generated by the aircraft during operation is prevented. This increases the safety of tank installation and reduces the limitations of liquid hydrogen tank design caused by the need to consider the supporting structure.

[0007] The technical solutions provided in this application are as follows:

[0008] An elastic composite support and fixing structure suitable for an airborne liquid hydrogen storage tank, comprising:

[0009] A rigid polyurethane foam base with positioning slots for the tank;

[0010] A "cross" shaped hoop sleeve includes a transverse hoop and a longitudinal hoop. The middle portions of the transverse hoop and the longitudinal hoop are vertical and fixedly connected. Both ends of the transverse hoop and the longitudinal hoop are bent toward the same side. The ends of the transverse hoop and the longitudinal hoop are used to be fixedly connected to the cabin. The cross intersection of the transverse hoop and the longitudinal hoop is directly opposite to the positioning groove.

[0011] The elastic module is connected to the transverse hoop and the longitudinal hoop to make the transverse hoop and the longitudinal hoop elastic.

[0012] Furthermore, the rigid polyurethane foam base is provided with a card slot, and the bent ends of the transverse hoop and the longitudinal hoop are clamped in the card slot.

[0013] Furthermore, the elastic module is a spring module or an elastic sleeve module; a disconnection portion is provided on both the transverse hoop and the longitudinal hoop, and two ends of the elastic module are connected to two ends of the disconnection portion;

[0014] The spring module includes a spring, and two ends of the spring are connected to two ends of the disconnection part;

[0015] The elastic sleeve module includes a joint, an inner sleeve and an outer sleeve. The outer sleeve is sleeved on the outside of the inner sleeve. The end of the inner sleeve away from the outer sleeve and the end of the outer sleeve away from the inner sleeve are both connected with joints. The joints at both ends are connected to the two ends of the disconnection part.

[0016] Furthermore, a groove is provided on the outer surface of the inner sleeve, and an elastic slider is connected to the inner surface of the outer sleeve. The elastic slider cooperates with the groove so that the inner sleeve and the outer sleeve are slidably connected along the groove.

[0017] Furthermore, when the storage tank is a horizontal liquid hydrogen storage tank, the rigid polyurethane foam base is provided with a horizontal liquid hydrogen storage tank diameter pipe perforation, and the "cross"-shaped hoop sleeve is provided with a through hole at a position opposite to the horizontal liquid hydrogen storage tank diameter pipe perforation, and the filling diameter pipe and the exhaust diameter pipe at both ends of the horizontal liquid hydrogen storage tank pass through the horizontal liquid hydrogen storage tank diameter pipe perforation and the through hole respectively;

[0018] A flexible material is wrapped between the inner ring of the through hole and the filling diameter pipe or the exhaust diameter pipe.

[0019] Furthermore, when the horizontal liquid hydrogen storage tank is installed, the positioning groove is a horizontal liquid hydrogen storage tank positioning groove, the shape of the horizontal liquid hydrogen storage tank positioning groove matches the horizontal liquid hydrogen storage tank placed horizontally, and the depth of the horizontal liquid hydrogen storage tank positioning groove is greater than the radius of the horizontal liquid hydrogen storage tank;

[0020] Place the horizontal liquid hydrogen storage tank in the horizontal liquid hydrogen storage tank positioning groove, and pass the filling diameter pipe and exhaust diameter pipe of the horizontal liquid hydrogen storage tank through the horizontal liquid hydrogen storage tank diameter pipe perforation and through-hole; clamp the "cross" type hoop sleeve in the groove on the rigid polyurethane foam base, and fix the end of the "cross" type hoop sleeve to the cabin.

[0021] Furthermore, when the storage tank is a vertical liquid hydrogen storage tank, a vertical liquid hydrogen storage tank diameter pipe through-hole is provided in the middle of a cross portion formed by vertically and fixedly connecting the transverse hoop and the longitudinal hoop, and the vertical liquid hydrogen storage tank diameter pipe through-hole is used for the vertical liquid hydrogen storage tank diameter pipe to pass through;

[0022] A flexible material is coated between the vertical liquid hydrogen storage tank diameter pipe perforation and the vertical liquid hydrogen storage tank diameter pipe.

[0023] Furthermore, when the vertical liquid hydrogen storage tank is installed, the positioning groove is a vertical liquid hydrogen storage tank positioning groove, and the vertical liquid hydrogen storage tank positioning groove cooperates with the bottom head of the vertical liquid hydrogen storage tank;

[0024] Place the vertical liquid hydrogen storage tank in the vertical liquid hydrogen storage tank positioning groove, clamp the "cross" hoop sleeve into the groove on the rigid polyurethane foam base, pass the vertical liquid hydrogen storage tank diameter pipe through the vertical liquid hydrogen storage tank diameter pipe perforation, and fix the end of the "cross" hoop sleeve to the cabin.

[0025] In summary, this application has at least the following beneficial technical effects:

[0026] The present invention separates the liquid hydrogen storage tank support structure from the tank body, so that the structure of the storage tank is no longer constrained by the support structure during the design process, reducing the difficulty of tank design and the complexity of the processing technology, and has versatility; at the same time, the rigid polyurethane foam base can not only effectively support and fix the liquid hydrogen storage tank, but also play a certain insulating role, and then use longitudinal and annular hoops to fix the rigid polyurethane foam base, thereby fixing the position of the liquid hydrogen storage tank. The elastic module on the hoop greatly improves the vibration reduction performance of the structure, which can not only withstand the impact of isotropic acceleration of the aircraft, but also adapt to the thermal expansion and contraction of the liquid hydrogen storage tank during use, effectively increasing the safety of the tank installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the elastic composite support fixing structure of the airborne horizontal liquid hydrogen storage tank according to Example 1 of the present invention;

[0028] Figure 2 for Figure 1 Top view of the structure;

[0029] Figure 3 for Figure 1 Schematic diagram of the medium-hard polyurethane foam base structure;

[0030] Figure 4 for Figure 3 Top view of the structure;

[0031] Figure 5 Schematic diagram of the integration of a horizontal liquid hydrogen storage tank and an elastic composite support fixed structure;

[0032] Figure 6 Schematic diagram of the elastic composite support structure of an airborne vertical liquid hydrogen storage tank according to Example 2 of the present invention;

[0033] Figure 7 for Figure 6 Top view of the structure;

[0034] Figure 8 for Figure 6 Schematic diagram of the middle sleeve module structure;

[0035] Figure 9 for Figure 8 Cross-section in the middle CC direction;

[0036] Figure 10 for Figure 8 Cross-section in the middle BB direction;

[0037] Figure 11 for Figure 8 Cross-section in the middle AA direction;

[0038] Figure 12 Schematic diagram of the integration of a vertical liquid hydrogen storage tank and an elastic composite support fixed structure.

[0039] Among them, 1-bolt support for fixing with the cabin; 2-bolt hole; 3-rigid polyurethane foam base; 4-diameter pipe perforation; 5-transverse hoop; 6-transverse spring module; 7-longitudinal hoop; 8-longitudinal spring module; 9-horizontal liquid hydrogen storage tank positioning groove;

[0040] 10-card slot; 11-horizontal liquid hydrogen storage tank; 12-filling diameter pipe; 13-exhaust diameter pipe;

[0041] 14- transverse elastic sleeve module; 15- longitudinal sleeve module;

[0042] 16-perforation of the diameter pipe of the vertical liquid hydrogen storage tank; 17-positioning groove of the vertical liquid hydrogen storage tank; 18-connector; 19-inner sleeve; 20-groove; 21-outer sleeve; 22-elastic slider; 23-vertical liquid hydrogen storage tank; 24-diameter pipe of the vertical liquid hydrogen storage tank. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of this application clearer, the embodiments disclosed in this application will be described in further detail below with reference to the accompanying drawings.

[0044] The embodiment of the present application discloses a device suitable for installing a liquid hydrogen storage tank, comprising a transverse hoop, a longitudinal hoop, an elastic module, a rigid polyurethane foam base, perforations for filling and exhaust pipes of the liquid hydrogen storage tank, and bolt supports for fixing to the cabin.

[0045] The transverse hoop and the longitudinal hoop are connected by a "cross elastic composite support fixing structure", and one or more elastic modules are distributed on each of the transverse hoop and the longitudinal hoop;

[0046] The elastic module includes a spring structure with both rigidity and elasticity and a retractable elastic sleeve structure;

[0047] The spring structure and the retractable elastic sleeve structure can be made of stainless steel, aluminum alloy, carbon fiber ceramic composite material, epoxy resin composite material, etc.

[0048] The rigid polyurethane foam base has the functions of thermal insulation, supporting and fixing the liquid hydrogen storage tank and protecting the outer surface of the storage tank;

[0049] The perforations of the filling pipe and the exhaust pipe are determined according to the actual position of the storage tank;

[0050] The bolt supports for fixing the cabin are respectively connected to the longitudinal hoop and the transverse hoop;

[0051] The main body material of the elastic composite supporting and fixing structure can be stainless steel, epoxy glass fiber reinforced plastic, carbon fiber composite material or polymer resin composite material.

[0052] Example 1

[0053] This embodiment provides an elastic composite support fixing structure suitable for an onboard horizontal liquid hydrogen storage tank, such as Figure 1 and Figure 2 As shown, it includes a bolt support 1, a positioning bolt hole 2, a hard polyurethane foam base 3, a diameter tube through-hole 4, a transverse hoop 5, a transverse spring module 6, a longitudinal hoop 7, and a longitudinal spring module 8. A horizontal liquid hydrogen storage tank positioning groove 9 for placing a horizontal liquid hydrogen storage tank 11 is formed on the hard polyurethane foam base 3.

[0054] The transverse hoop 5 and the longitudinal hoop 7 are vertically and fixedly connected at their midpoints. A transverse spring module 6 is connected to the transverse hoop 5, and a longitudinal spring module 8 is connected to the longitudinal hoop 7. Both ends of the transverse hoop 5 and the longitudinal hoop 7 are bent toward the rigid polyurethane foam base 3. The transverse hoop 5 and the longitudinal hoop 7 form a "cross"-shaped hoop sleeve. The intersection of the transverse hoop 5 and the longitudinal hoop 7 directly aligns with the horizontal liquid hydrogen tank positioning groove 9.

[0055] like Figure 1 and Figure 3 As shown, the ends of the transverse hoop 5 and longitudinal hoop 7 are connected to bolt supports 1, which are provided with positioning bolt holes 2 for securing the connection to the cabin. The rigid polyurethane foam base 3 is provided with diameter pipe holes 4. A through hole is provided in the "cross" hoop sleeve directly opposite the horizontal liquid hydrogen storage tank diameter pipe holes 4. The filling diameter pipe 12 and exhaust diameter pipe 13 at both ends of the horizontal liquid hydrogen storage tank extend through the horizontal liquid hydrogen storage tank diameter pipe holes 4 and the through hole, respectively.

[0056] like Figure 4 As shown, a slot 10 is provided on the rigid polyurethane foam base, and the ends of the transverse hoop 5 and the longitudinal hoop 7 are both arranged in the slot 10 .

[0057] like Figure 5As shown, when using this structure, after determining the installation position of the liquid hydrogen storage tank in the cabin, a rigid polyurethane foam base is placed, the horizontal liquid hydrogen storage tank is placed in the horizontal liquid hydrogen storage tank positioning groove 9, and the filling diameter pipe 12 and exhaust diameter pipe 13 of the horizontal liquid hydrogen storage tank 11 are passed through the corresponding diameter pipe perforations 4 on the rigid polyurethane foam base 3. Further, the "cross"-shaped hoop sleeve is tightened with the corresponding slot positions on the rigid polyurethane foam base 3 to ensure that the diameter pipes at both ends of the tank are clamped in the diameter pipe perforations 4 of the supporting fixed structure. Finally, the tank is fixed in the cabin with bolts. Among them, the inner ring of the through hole of the "cross"-shaped hoop sleeve is coated with a flexible material such as rubber or gasket to protect the diameter pipe and at the same time ensure that it has a buffering effect on the diameter pipe during vibration. When in use, the elasticity and stiffness of the transverse spring module 6 and the longitudinal spring module 8 can be customized according to the operating characteristics of the aircraft and integrated at different positions of the transverse and longitudinal hoop rings. Different numbers and positions of spring modules can be set according to actual application conditions to ensure that they fully meet the shock absorption requirements.

[0058] Example 2

[0059] This embodiment provides an elastic composite support fixing structure suitable for an airborne vertical liquid hydrogen storage tank, such as Figure 6 and Figure 7 As shown, it includes a bolt support 1 for fixing the cabin, a positioning bolt hole 2, a hard polyurethane foam base 3, a vertical liquid hydrogen storage tank diameter pipe through-hole 12, a transverse hoop 5, a longitudinal hoop 7, a transverse elastic sleeve module 14, and a longitudinal elastic sleeve module 15.

[0060] like Figure 6 and Figure 7 As shown, the rigid polyurethane foam base 3 is provided with a vertical liquid hydrogen storage tank positioning groove 17, which is used to accommodate the bottom head of the vertical liquid hydrogen storage tank 23. The middle portions of the transverse hoop 5 and the longitudinal hoop 7 are vertically and fixedly connected. The ends of the transverse hoop 5 and the longitudinal hoop 7 are bent toward the same side to be clamped into the grooves on the side of the rigid polyurethane foam base 3, forming a "cross" hoop sleeve. The vertical liquid hydrogen storage tank diameter pipe through-hole 16 is provided in the middle of the cross portion formed by the vertical and fixed connection of the transverse hoop 5 and the longitudinal hoop 7. The vertical liquid hydrogen storage tank diameter pipe through-hole 16 is used to pass the vertical liquid hydrogen storage tank diameter pipe 24 of the vertical liquid hydrogen storage tank 23.

[0061] like Figure 8 and Figure 9As shown, the structures of the transverse elastic sleeve module 14 and the longitudinal sleeve module 15 include: a joint 18, an inner sleeve 19 and an outer sleeve 21; the outer sleeve 21 is sleeved on the outside of the inner sleeve 19, and the outer surface of the inner sleeve 19 is provided with a groove. The inner surface of the outer sleeve 21 is connected to an elastic slider 22, and the elastic slider 22 cooperates with the groove 20 to enable a sliding connection between the inner sleeve 19 and the outer sleeve 21; the end of the inner sleeve 19 away from the outer sleeve 21 and the end of the outer sleeve 21 away from the inner sleeve 19 are both connected to the joint 18. The joint 18 is used to connect the transverse hoop 5 and the longitudinal hoop 7. The elastic slider 22 is a T-shaped structure, as shown in FIG. Figure 10 and Figure 11 shown.

[0062] like Figure 12 As shown, when using this structure, after determining the installation position of the vertical liquid hydrogen storage tank 23 in the cabin, the rigid polyurethane foam base 3 is placed, the vertical liquid hydrogen storage tank is placed in the vertical liquid hydrogen storage tank positioning groove 17, the "cross" type hoop sleeve is tightened with the corresponding slot position on the rigid polyurethane foam base 3, and the vertical liquid hydrogen storage tank diameter pipe 24 is passed through the vertical liquid hydrogen storage tank diameter pipe perforation 16 at the top of the "cross" type hoop sleeve, wherein the diameter pipe perforation inner ring of the "cross" type hoop sleeve is coated with flexible materials such as rubber or gaskets to protect the diameter pipe, and finally the tank is fixed in the cabin by bolts. When in use, the rigidity and elasticity of the structure of the transverse elastic telescopic sleeve and the longitudinal elastic telescopic sleeve can be optimized according to the working characteristics of the aircraft, and integrated at different positions of the transverse and longitudinal hoop rings, and different numbers and positions of elastic sleeve modules can be set according to actual application conditions to ensure that it fully meets the shock absorption requirements.

[0063] The contents not described in detail in this application specification are common knowledge to those skilled in the art.

[0064] The present application has been described in detail above with reference to specific embodiments and exemplary examples. However, these descriptions should not be construed as limiting the present application. Those skilled in the art will appreciate that, without departing from the spirit and scope of the present application, various equivalent substitutions, modifications, or improvements may be made to the technical solutions and implementations of the present application, all of which fall within the scope of the present application. The scope of protection of the present application shall be determined by the appended claims.

Claims

1. An elastic composite support and fixing structure suitable for an airborne liquid hydrogen storage tank, characterized in that: include: A rigid polyurethane foam base (3) is provided with a positioning groove that matches the storage tank; A "cross" type hoop sleeve comprises a transverse hoop (5) and a longitudinal hoop (7), wherein the middle portions of the transverse hoop (5) and the longitudinal hoop (7) are vertical and fixedly connected, both ends of the transverse hoop (5) and the longitudinal hoop (7) are bent toward the same side, and the ends of the transverse hoop (5) and the longitudinal hoop (7) are used for fixed connection with the cabin; and the cross intersection portion of the transverse hoop (5) and the longitudinal hoop (7) is directly opposite to the positioning groove; The elastic module is connected to the transverse hoop (5) and the longitudinal hoop (7) to make the transverse hoop (5) and the longitudinal hoop (7) elastic.

2. The elastic composite support and fixing structure for an airborne liquid hydrogen storage tank according to claim 1, characterized in that: The rigid polyurethane foam base (3) is provided with a clamping groove (10), and the bent ends of the transverse hoop (5) and the longitudinal hoop (7) are clamped in the clamping groove (10).

3. The elastic composite support and fixing structure for an airborne liquid hydrogen storage tank according to claim 1, characterized in that: The elastic module is a spring module or an elastic sleeve module; a disconnection portion is provided on both the transverse hoop (5) and the longitudinal hoop (7), and two ends of the elastic module are connected to two ends of the disconnection portion; The spring module includes a spring, and two ends of the spring are connected to two ends of the disconnection part; The elastic sleeve module comprises a joint (18), an inner sleeve (19) and an outer sleeve (21); the outer sleeve (21) is sleeved outside the inner sleeve (19); the end of the inner sleeve (19) away from the outer sleeve (21) and the end of the outer sleeve (21) away from the inner sleeve (19) are both connected with the joint (18); and the joints (18) at both ends are connected to the two ends of the disconnection part.

4. The elastic composite support and fixing structure for an airborne liquid hydrogen storage tank according to claim 3, characterized in that: The outer surface of the inner sleeve (19) is provided with a groove, and the inner surface of the outer sleeve (21) is connected with an elastic slider (22). The elastic slider (22) cooperates with the groove (20) so that the inner sleeve (19) and the outer sleeve (21) are slidably connected along the groove (20).

5. The elastic composite support and fixing structure for an airborne liquid hydrogen storage tank according to claim 1, characterized in that: When the storage tank is a horizontal liquid hydrogen storage tank, the rigid polyurethane foam base (3) is provided with a horizontal liquid hydrogen storage tank diameter pipe perforation (4), a through hole is provided in the "cross" shaped hoop sleeve at a position directly opposite to the horizontal liquid hydrogen storage tank diameter pipe perforation (4), and the filling diameter pipe (12) and the exhaust diameter pipe (13) at both ends of the horizontal liquid hydrogen storage tank respectively pass through the horizontal liquid hydrogen storage tank diameter pipe perforation (4) and the through hole at both ends; A flexible material is coated between the inner ring of the through hole and the filling diameter pipe (12) or the exhaust diameter pipe (13).

6. The elastic composite support and fixing structure for an airborne liquid hydrogen storage tank according to claim 5, characterized in that: When the horizontal liquid hydrogen storage tank is installed, the positioning groove is a horizontal liquid hydrogen storage tank positioning groove (9), the shape of the horizontal liquid hydrogen storage tank positioning groove (9) matches the horizontal liquid hydrogen storage tank placed horizontally, and the depth of the horizontal liquid hydrogen storage tank positioning groove (9) is greater than the radius of the horizontal liquid hydrogen storage tank; The horizontal liquid hydrogen storage tank is placed in the horizontal liquid hydrogen storage tank positioning groove (9), and the filling diameter pipe (12) and the exhaust diameter pipe (13) of the horizontal liquid hydrogen storage tank are passed through the horizontal liquid hydrogen storage tank diameter pipe perforation (4) and the through hole; the "cross" type hoop sleeve is clamped in the clamping groove on the hard polyurethane foam base (3), and the end of the "cross" type hoop sleeve is fixedly connected to the cabin.

7. The elastic composite support and fixing structure for an airborne liquid hydrogen storage tank according to claim 1, characterized in that: When the storage tank is a vertical liquid hydrogen storage tank, a vertical liquid hydrogen storage tank diameter pipe perforation (16) is provided in the middle of a cross portion formed by vertically and fixedly connecting the transverse hoop (5) and the longitudinal hoop (7), and the vertical liquid hydrogen storage tank diameter pipe perforation (16) is used for the vertical liquid hydrogen storage tank diameter pipe (24) of the vertical liquid hydrogen storage tank to pass through; A flexible material is coated between the vertical liquid hydrogen storage tank diameter pipe perforation (16) and the vertical liquid hydrogen storage tank diameter pipe (24).

8. The elastic composite support and fixing structure for an airborne liquid hydrogen storage tank according to claim 7, characterized in that: When the vertical liquid hydrogen storage tank is installed, the positioning groove is a vertical liquid hydrogen storage tank positioning groove (17), and the vertical liquid hydrogen storage tank positioning groove (17) cooperates with the bottom head of the vertical liquid hydrogen storage tank; Place the vertical liquid hydrogen storage tank in the vertical liquid hydrogen storage tank positioning groove (17), clamp the "cross" type hoop ring sleeve in the clamping groove on the hard polyurethane foam base (3), pass the vertical liquid hydrogen storage tank diameter pipe (24) through the vertical liquid hydrogen storage tank diameter pipe perforation (16), and fix the end of the "cross" type hoop ring sleeve to the cabin.

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