Vehicle-mounted heat insulation gas cylinder

Abstract

The invention provides a vehicle-mounted heat insulation gas cylinder which comprises an outer container and an inner container arranged in the outer container, and a fixed end supporting structure is arranged at the first end, in the axial direction, between the inner container and the outer container; the fixed end supporting structure comprises a fixed end inner support assembly, a fixed end outer support assembly and a fixed heat insulation part, the fixed end inner support assembly is fixedly connected with the inner container, and a first annular mounting groove is formed in the fixed end inner support assembly; the fixed end outer support assembly is fixedly connected with the outer container, and a second annular mounting groove is formed in the fixed end outer support assembly; a first annular mounting part and a second annular mounting part are arranged at the two ends of the fixed heat insulation part respectively, the first annular mounting part is clamped in the first annular mounting groove in an interference fit mode, and the second annular mounting part is clamped in the second annular mounting groove in an interference fit mode. The purpose of fixing the fixed end is achieved through the design of the structural part, heat leakage and manufacturing and machining difficulty are reduced, and machining cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of cryogenic medium storage, and specifically relates to a vehicle-mounted adiabatic gas cylinder. Background Art

[0002] With the development of science and technology, cryogenic media such as liquid hydrogen, liquid oxygen, and liquid nitrogen are applied in more and more industrial fields. For example, hydrogen energy transportation is a leading field in the utilization of hydrogen energy, whose mission is to drive the comprehensive development of hydrogen energy. Its main application is hydrogen fuel cells, and its hydrogen supply modes include gaseous hydrogen and liquid hydrogen.

[0003] Due to the low hydrogen storage density of gaseous hydrogen transportation, as the only cryogenic storage and supply technology that can currently meet the requirements of high hydrogen storage density, vehicle-mounted liquid hydrogen gas cylinders are bound to be widely used.

[0004] For vehicle-mounted liquid hydrogen gas cylinders, because the boiling point of liquid hydrogen is -253°C, it determines that the key to its design is how to improve the adiabatic effect, reduce the evaporation rate, and increase the maintenance time of the gas cylinder.

[0005] In order to reduce heat leakage and increase the maintenance time, vehicle-mounted liquid hydrogen gas cylinders usually adopt a double-layer structure, which consists of an outer shell and an inner container. The space between the inner and outer shells is evacuated, and multiple layers of thermal insulation materials are wound around the outer wall of the inner container. For vehicle-mounted liquid hydrogen gas cylinders, its heat leakage forms are composed of three parts: comprehensive heat leakage of the thermal insulation layer, heat leakage of the support structure, and heat leakage of pipelines and their components, etc. Among them, the heat leakage of the support structure cannot be ignored. Multiple studies have shown that a well-designed vehicle-mounted liquid hydrogen gas cylinder can reduce the support heat leakage rate to less than 15% of the total heat leakage. Otherwise, its heat leakage may reach about 30%. Therefore, a good adiabatic support structure is crucial for the working performance of a vehicle-mounted liquid hydrogen gas cylinder.

[0006] In view of this, the present invention is specifically proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to at least overcome some deficiencies of the prior art, and provide a vehicle-mounted adiabatic gas cylinder, which improves the bearing capacity of the sliding end by using a sliding support assembly, and reduces the heat leakage of the sliding end by using an annular heat insulation support assembly, thereby improving the safety performance and adiabatic performance of the vehicle-mounted adiabatic gas cylinder.

[0008] To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is:

[0009] A vehicle-mounted adiabatic gas cylinder includes an outer container and an inner container disposed inside the outer container. A fixed-end support structure is provided at the first end in the axial direction between the inner container and the outer container. The fixed-end support structure includes:

[0010] A fixed-end inner support assembly, fixedly connected to the inner container, and a first annular mounting groove is provided in the fixed-end inner support assembly;

[0011] A fixed-end outer support assembly, fixedly connected to the outer container, and a second annular mounting groove is provided in the fixed-end outer support assembly; and

[0012] A fixed heat insulator, with a first annular mounting portion and a second annular mounting portion respectively provided at both ends thereof. Among them, the first annular mounting portion is clamped in the first annular mounting groove by interference fit, and the second annular mounting portion is clamped in the second annular mounting groove by interference fit.

[0013] In some embodiments, the fixed-end inner support assembly includes:

[0014] A fixed-end inner support, fixedly connected to the inner container;

[0015] A fixed-end baffle, disposed in the fixed-end inner support, and a mounting hole is provided in the middle of the fixed-end baffle;

[0016] A fixed-end support seat, one end of which is inserted into the mounting hole, and the other end is provided with a first annular shoulder formed by bending radially outward, and together with the fixed-end baffle, forms the first annular mounting groove.

[0017] In some embodiments, the fixed-end inner support includes a fixed-end inner sleeve and a fixed-end inner cover disposed at one end of the fixed-end inner sleeve;

[0018] Among them, the fixed-end baffle is connected to the fixed-end inner sleeve and is located at a position of the fixed-end inner sleeve close to the fixed-end inner cover.

[0019] In some embodiments, fixed-end ventilation holes communicating the spaces on both sides of the fixed-end baffle are provided on the fixed-end baffle.

[0020] In some embodiments, the fixed-end outer support assembly includes:

[0021] A fixed-end outer support, fixedly connected to the outer container, and a first annular flange formed by bending radially inward is provided at one end of the fixed-end outer support close to the fixed-end inner support assembly;

[0022] A fixed-end outer cover, fixedly connected to one end of the fixed-end outer support away from the fixed-end inner support assembly, and an annular shaft cylinder extending axially is provided on the side of the fixed-end outer cover facing the fixed-end inner support assembly, and the space between the end of the annular shaft cylinder and the first annular flange forms the second annular mounting groove.

[0023] In some embodiments, a sliding end support structure is provided at the second end in the axial direction between the inner container and the outer container. The sliding end support structure includes:

[0024] A sliding end inner support, fixedly connected to the inner container;

[0025] A sliding end outer support, fixedly connected to the outer container;

[0026] A ring-shaped heat insulation support assembly, disposed within the sliding end outer support, and the axial direction of the ring-shaped heat insulation support assembly is the same as the axial direction of the inner container and the outer container; and

[0027] A sliding support assembly, one end of the sliding support assembly is fixedly connected to the sliding end inner support, and the other end is inserted into the axial hole of the ring-shaped heat insulation support assembly and can slide axially relative to the axial hole of the ring-shaped heat insulation support assembly.

[0028] In some embodiments, the ring-shaped heat insulation support assembly includes a first ring-shaped baffle, a second ring-shaped baffle, and a ring-shaped heat insulation member clamped between the first ring-shaped baffle and the second ring-shaped baffle;

[0029] Wherein, the edges of the first ring-shaped baffle and the second ring-shaped baffle are fixedly connected to the sliding end outer support.

[0030] In some embodiments, the central opening diameter of the first ring-shaped baffle and the second ring-shaped baffle is smaller than the central opening diameter of the ring-shaped heat insulation member.

[0031] In some embodiments, at least two groups of the ring-shaped heat insulation support assemblies are axially spaced within the sliding end outer support.

[0032] In some embodiments, the sliding support assembly includes a hollow sliding support member and a heat insulation filling member filled inside the sliding support member.

[0033] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art.

[0034] 1. For the vehicle-mounted adiabatic gas cylinder provided by the present invention, by respectively providing a first ring-shaped mounting portion and a second ring-shaped mounting portion at both ends of the fixed heat insulation member, and clamping the first ring-shaped mounting portion and the second ring-shaped mounting portion in an interference fit in the first ring-shaped mounting groove of the fixed end inner support assembly and the second ring-shaped mounting groove of the fixed end outer support assembly, the fastening connection method usually adopted between the fixed end heat insulation member and the metal member in the prior art is abandoned. The present invention realizes the fixing purpose of the fixed end through the design of the structural member, reduces heat leakage, manufacturing and processing difficulty, and reduces processing cost.

[0035] 2. The vehicle-mounted cryogenic gas cylinder provided by the present invention improves the load-bearing capacity of the sliding end by using a sliding support assembly, and reduces the heat leakage at the sliding end by using an annular heat-insulating support assembly, thereby improving the safety performance and heat-insulating performance of the vehicle-mounted cryogenic gas cylinder.

[0036] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, as a part of the present invention, 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 to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings according to these drawings without creative efforts. In the drawings:

[0038] Figure 1 is a schematic structural diagram of a vehicle-mounted cryogenic gas cylinder provided according to an exemplary embodiment of the present invention;

[0039] Figure 2 is Figure 1 a partial enlarged structural diagram of part A in

[0040] Figure 3 is Figure 1 a partial enlarged structural diagram of part B in

[0041] In the figure: 100, vehicle-mounted cryogenic gas cylinder;

[0042] 10, outer container;

[0043] 20, inner container;

[0044] 30, fixed-end support structure; 31, fixed-end inner support assembly; 311, fixed-end inner support; 3111, fixed-end inner sleeve; 3112, fixed-end inner cover; 312, fixed-end baffle; 313, fixed-end support seat; 3131, first annular shoulder; 314, fixed-end vent hole; 32, fixed-end outer support assembly; 321, fixed-end outer support; 322, fixed-end outer cover; 323, annular shaft tube; 324, first annular flange; 33, fixed heat-insulating member; 331, first annular mounting portion; 332, second annular mounting portion.

[0045] 40. Sliding end support structure; 41. Inner support at the sliding end; 411. Inner cylinder at the sliding end; 412. Inner cover at the sliding end; 42. Outer support at the sliding end; 421. Outer cylinder at the sliding end; 422. Outer cover at the sliding end; 43. Ring-shaped heat insulation support assembly; 431. First ring-shaped baffle; 432. Second ring-shaped baffle; 433. Ring-shaped heat insulation member; 44. Sliding support assembly; 441. Sliding support member; 442. Heat insulation filling member;

[0046] 50. Vacuum insulation cavity;

[0047] 60. Heat insulation structure.

[0048] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by reference to specific embodiments. Detailed implementation manners

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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.

[0050] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Figure 1 The structure of the vehicle-mounted cryogenic gas cylinder 100 provided according to an exemplary embodiment of the present invention is shown. The vehicle-mounted cryogenic gas cylinder 100 can be used to store and transport cryogenic media. The cryogenic media of the vehicle-mounted cryogenic gas cylinder 100 are, for example, liquid hydrogen, liquid oxygen, liquid nitrogen, and LNG, etc.

[0053] As Figure 1As shown, the vehicle-mounted insulated gas cylinder 100 includes an outer container 10 and an inner container 20 arranged inside the outer container 10, and a vacuum insulation chamber 50 is provided between the outer container 10 and the inner container 20, which is used to place the inner container 20 in a vacuum environment to reduce heat leakage. In addition, an insulation structure 60 is wrapped on the outer wall of the inner container 20, and the insulation structure 60, for example, includes an insulation layer composed of a variety of insulation materials. Furthermore, an adsorbent can be provided between the insulation structure 60 and the outer wall of the inner container 20. A getter can also be provided in the vacuum insulation chamber 50 to adsorb vaporized flash steam.

[0054] It should be pointed out that the inner container 20 or the outer container 10 is also provided with equipment such as connecting pipe components and instruments, which can be provided as required and will not be described in detail in the present invention.

[0055] A fixed end support structure 30 is provided at the first end in the axial direction between the inner container 20 and the outer container 10, and a sliding end support structure 40 is provided at the second end. The outer container 10 includes an outer cylinder and an outer head. The inner container 20 includes an inner cylinder and an inner head. The fixed end support structure 30 and the sliding end support structure 40 are provided between the inner head and the outer head at both ends in the axial direction, respectively. When the inner container 20 generates temperature difference stress due to the contraction of the metal material when it is cooled, the inner container 20 can be made to contract toward the fixed end support structure 30 relative to the sliding end support structure 40. In other words, when the inner container 20 is filled with a low-temperature medium, all parts in contact with the low-temperature medium will undergo volume contraction, and the inner container 20 will contract toward the fixed end support structure 30 along the axial direction with the fixed end support structure 30 as a fixed point.

[0056] Please refer to the attached Figure 2 Taking the fixed end support structure 30 disposed at the right end of the vehicle-mounted insulated gas cylinder 100 as an example, its structure is introduced in detail.

[0057] like Figure 2 As shown, the fixed end support structure 30 includes a fixed end inner support assembly 31, a fixed end outer support assembly 32 and a fixed heat insulation member 33. The fixed end inner support assembly 31 is fixedly connected to the inner head of the inner container 20 of the inner container 20, and a first annular mounting groove is provided in the fixed end inner support assembly 31; the fixed end outer support assembly 32 is fixedly connected to the outer head of the outer container 10 of the outer container 10, and a second annular mounting groove is provided in the fixed end outer support assembly 32; the two ends of the fixed heat insulation member 33 are respectively provided with a first annular mounting portion 331 and a second annular mounting portion 332, wherein the first annular mounting portion 331 is clamped in the first annular mounting groove by interference fit, and the second annular mounting portion 332 is clamped in the second annular mounting groove by interference fit.

[0058] The fixed heat insulation member 33 can be made of a glass fiber reinforced plastic material with a relatively low thermal conductivity coefficient to reduce heat leakage.

[0059] Specifically, at the fixed end, a first fixed-end mounting opening is provided on the inner end head of the inner container 20, and a second fixed-end mounting opening is provided on the outer end head of the outer container 10. The fixed-end inner support assembly 31 is welded at the first fixed-end mounting opening, and the fixed-end outer support assembly 32 is welded at the second fixed-end mounting opening. The first annular mounting portion 331 and the second annular mounting portion 332 of the fixed heat insulation member 33 are respectively clamped in the first annular mounting groove of the fixed-end inner support assembly 31 and the second annular mounting groove of the fixed-end outer support assembly 32 by interference fit. The axes of the fixed-end inner support assembly 31, the fixed heat insulation member 33, and the fixed-end outer support assembly 32 are substantially coincident. It can be understood that a reinforcing ring needs to be provided at the position where the inner end head of the inner container 20 and the outer end head of the outer container 10 are provided with the fixed-end mounting openings to compensate for the strength loss caused by opening the mounting openings.

[0060] In the above solution, since the space inside the fixed-end inner support assembly 31 and the fixed-end outer support assembly 32 is small, and the operation space required for fixing the fixed heat insulation member 33 to the fixed-end inner support assembly 31 and the fixed-end outer support assembly 32 with fasteners such as bolts in the prior art is large, which increases the operation difficulty. The present invention realizes the fixing purpose of the fixed end through the design of the structural member, and abandons the fastener connection method usually adopted between the fixed-end heat insulation member and the metal member in the prior art, which can not only reduce heat leakage, but also reduce the manufacturing and processing difficulty, thereby reducing the processing cost.

[0061] In some embodiments, the fixed-end inner support assembly 31 includes a fixed-end inner support 311, a fixed-end baffle 312, and a fixed-end support seat 313. Among them, the fixed-end inner support 311 is fixedly connected to the inner container 20; the fixed-end baffle 312 is arranged inside the fixed-end inner support 311, and a mounting hole is provided in the middle of the fixed-end baffle 312; one end of the fixed-end support seat 313 is inserted into the mounting hole, and the other end is provided with a first annular shoulder 3131 formed by bending radially outward, and together with the fixed-end baffle 312, forms the first annular mounting groove.

[0062] Specifically, the fixed-end inner support 311 includes a fixed-end inner sleeve 3111 and a fixed-end inner cover 3112 disposed at one end of the fixed-end inner sleeve 3111. The fixed-end inner cover 3112 can be any one of an elliptical head, a dish head, and a flat head according to actual conditions. The fixed-end inner sleeve 3111 and the fixed-end inner cover 3112 are fixedly connected by welding. The outer wall of the fixed-end inner sleeve 3111 is welded to the first fixed-end mounting opening formed on the inner head of the inner container 20. The fixed-end inner sleeve 3111 and the fixed-end inner cover 3112 are located inside the inner container 20. The fixed-end baffle 312 is an annular structure, and the edge of the fixed-end baffle 312 is welded to the fixed-end inner sleeve 3111 and is located at a position of the fixed-end inner sleeve 3111 close to the fixed-end inner cover 3112. In this way, the length of the fixed heat insulation member 33 can be increased as much as possible without affecting the loading capacity of the inner container 20, which helps to reduce heat leakage.

[0063] The main body of the fixed-end support seat 313 is a short cylindrical structure or a short conical cylindrical structure. One end of the short cylinder or short conical cylinder is inserted into the mounting hole in the center of the fixed-end baffle 312 and welded to it, and the other end is bent radially outward to form the above-mentioned first annular shoulder 3131. The first annular shoulder 3131 and the fixed-end baffle 312 have an overlapping part projected in the axial direction. Then, the short cylinder or short conical cylinder, the first annular shoulder 3131 and the fixed-end baffle 312 jointly enclose an annular groove-like structure opening radially outward, and this annular groove-like structure is the above-mentioned first annular mounting groove.

[0064] It should be noted that the main body of the fixed heat insulation member 33 is a cylindrical structure. The first annular mounting portion 331 of the fixed heat insulation member 33 is a second annular fold formed by bending the end of the cylinder radially inward, and this second annular fold is clamped in the first annular mounting groove to realize the fixed connection between the fixed heat insulation member 33 and the fixed-end inner support assembly 31.

[0065] Refer again to Figure 2 The fixed-end outer support assembly 32 includes a fixed-end outer support 321 and a fixed-end outer cover 322. The fixed-end outer cover 322 can be any one of an elliptical head, a dish head, and a flat head according to actual conditions. The fixed-end outer support 321 is fixedly connected to the outer container 10. One end of the fixed-end outer support 321 close to the fixed-end inner support assembly 31 is provided with a first annular fold 324 formed by bending radially inward; the fixed-end outer cover 322 is fixedly connected to one end of the fixed-end outer support 321 away from the fixed-end inner support assembly 31. On the side of the fixed-end outer cover 322 facing the fixed-end inner support assembly 31, there is an annular shaft cylinder 323 extending axially, and the space between the end of the annular shaft cylinder 323 and the first annular fold 324 forms the second annular mounting groove.

[0066] Specifically, the main body of the fixed-end outer support 321 is a cylindrical structure. The outer wall of the fixed-end outer support 321 is welded to the second fixed-end installation opening formed on the outer head of the outer container 10. One end of the cylinder is provided with a first annular flange 324 formed by bending inward along the radial direction. The first annular flange 324 is integrally formed with the cylinder. The edge of the fixed-end outer cover 322 is welded to the other end of the cylinder. The annular shaft cylinder 323 is arranged on the inner side of the fixed-end outer cover 322 facing inward. The space between the end of the annular shaft cylinder 323 and the first annular flange 324 forms the second annular installation groove. Optionally, the annular shaft cylinder 323 can be integrally formed with the fixed-end outer cover 322.

[0067] It should be noted that the second annular installation part 332 of the fixed heat insulation part 33 is a second annular shoulder formed by bending the end of the cylinder outward along the radial direction. The second annular shoulder is clamped in the second annular installation groove to realize the fixed connection between the fixed heat insulation part 33 and the fixed-end outer support assembly 32.

[0068] Refer again to Figure 2 , after the two ends of the fixed heat insulation part 33 are respectively fixedly connected to the fixed-end inner support assembly 31 and the fixed-end outer support assembly 32, it can be seen that the fixed-end baffle 312, the fixed-end inner sleeve 3111, the fixed-end inner cover 3112, the fixed-end support seat 313, the fixed heat insulation part 33 and the fixed-end outer cover 322 jointly enclose a sealed space. When the temperature changes, it may occur that the joints of the interference fit between the first annular installation part 331 and the second annular installation part 332 of the fixed heat insulation part 33 and the fixed-end inner support assembly 31 and the fixed-end outer support assembly 32 burst due to excessive pressure in the sealed space, and / or the internal stress of the weld at the welded joint increases, thus affecting the quality of the weld. To prevent the above situation from occurring, the present invention is provided with a fixed-end ventilation hole 314 on the fixed-end baffle 312 to communicate the spaces on both sides of the fixed-end baffle 312, so that the above-mentioned sealed space can communicate with the vacuum insulation cavity 50 between the inner container 20 and the outer container 10. Then, when the pressure in the sealed space is relatively large, the gas can flow to the vacuum insulation cavity 50, so that the pressures in the spaces on both sides of the fixed-end baffle 312 tend to be balanced.

[0069] Next, refer to the attached Figure 3 Taking the sliding-end support structure 40 arranged at the left end of the vehicle-mounted cryogenic gas cylinder 100 as an example, its structure will be introduced in detail.

[0070] As Figure 3As shown in the figure, the sliding end support structure 40 includes a sliding end inner support 41, a sliding end outer support 42, an annular heat insulation support assembly 43, and a sliding support assembly 44. Among them, the sliding end inner support 41 is fixedly connected to the inner container 20; the sliding end outer support 42 is fixedly connected to the outer container 10; the annular heat insulation support assembly 43 is disposed inside the sliding end outer support 42, and the axial direction of the annular heat insulation support assembly 43 is the same as the axial direction of the inner container 20 and the outer container 10; one end of the sliding support assembly 44 is fixedly connected to the sliding end inner support 41, and the other end is inserted into the axial hole of the annular heat insulation support assembly 43 and can slide axially relative to the axial hole of the annular heat insulation support assembly 43.

[0071] Specifically, a first sliding end mounting opening is provided on the inner head of the inner container 20, and a second sliding end mounting opening is provided on the outer head of the outer container 10. The sliding end inner support 41 is welded at the first sliding end mounting opening, and the sliding end outer support 42 is welded at the second sliding end mounting opening. It can be understood that a reinforcing ring needs to be provided at the position where the inner head of the inner container 20 and the outer head of the outer container 10 are provided with the sliding end mounting openings to compensate for the strength loss caused by the opening of the mounting openings.

[0072] The sliding end inner support 41 includes a sliding end inner cylinder 411 and a sliding end inner cover 412 welded to the sliding end inner cylinder 411. The fixed end inner cover 3112 can be any one of an elliptical head, a butterfly head, and a flat head according to actual conditions. The sliding end inner cylinder 411 and the sliding end inner cover 412 are located inside the inner container 20. The outer wall of the sliding end inner cylinder 411 is welded to the first sliding end mounting opening, and one end of the sliding support assembly 44 is welded to the inner wall of the sliding end inner cover 412. It should be noted that increasing the length of the sliding support assembly 44 as much as possible without affecting the loading capacity of the inner container 20 helps to reduce heat leakage.

[0073] The sliding end outer support 42 includes a sliding end outer cylinder 421 and a sliding end outer cover 422 welded to the sliding end outer cylinder 421. The fixed end outer cover 322 can be any one of an elliptical head, a butterfly head, and a flat head according to actual conditions. The outer wall of the sliding end outer cylinder 421 is welded to the second sliding end mounting opening, and the edge of the annular heat insulation support assembly 43 is welded to the inner wall of the sliding end outer cylinder 421.

[0074] Further, the annular heat-insulating support assembly 43 includes a first annular baffle 431, a second annular baffle 432, and an annular heat-insulating member 433 clamped between the first annular baffle 431 and the second annular baffle 432. The annular heat-insulating member 433 can be made of a fiberglass material with a relatively low thermal conductivity to reduce heat leakage. The edges of the first annular baffle 431 and the second annular baffle 432 are welded to the inner wall of the sliding-end outer cylinder 421. The first annular baffle 431 and the second annular baffle 432 can provide sufficient support strength, while the annular heat-insulating member 433 can thermally isolate the inner container 20 from the outer container 10.

[0075] In some embodiments, to improve the support strength of the sliding end for the inner container 20, at least two groups can be axially spaced in the sliding-end outer support 42 along the annular heat-insulating support assembly 43 according to the need for the maximum loading capacity of the inner container 20.

[0076] In some embodiments, the sliding support assembly 44 includes a hollow sliding support member 441 and a heat-insulating filling member 442 filled inside the sliding support member 441. By filling the heat-insulating filling member 442 inside the sliding support member 441, it helps to reduce the cross-sectional area of the metal part of the heat-conducting section support pipe, thereby achieving the purpose of reducing heat leakage.

[0077] Refer again to Figure 3 , the central opening diameters of the first annular baffle 431 and the second annular baffle 432 are smaller than the central opening diameter of the annular heat-insulating member 433, so that the sliding support member 441 does not directly contact the sliding-end outer cylinder 421, preventing heat leakage caused by direct metal contact.

[0078] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content as equivalent embodiments of equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A vehicle-mounted adiabatic gas cylinder, comprising an outer container and an inner container disposed inside the outer container, wherein a fixed-end support structure is provided at a first end in the axial direction between the inner container and the outer container; characterized in that, The fixed-end support structure includes: A fixed-end inner support assembly, fixedly connected to the inner container, and a first annular mounting groove is provided in the fixed-end inner support assembly; A fixed-end outer support assembly, fixedly connected to the outer container, and a second annular mounting groove is provided in the fixed-end outer support assembly; and A fixed heat insulator, with a first annular mounting portion and a second annular mounting portion respectively provided at both ends thereof. Among them, the first annular mounting portion is clamped in the first annular mounting groove by interference fit, and the second annular mounting portion is clamped in the second annular mounting groove by interference fit.

2. The vehicle-mounted vacuum insulated gas cylinder according to claim 1, wherein The fixed-end inner support assembly includes: A fixed-end inner support, fixedly connected to the inner container; A fixed-end baffle, arranged inside the fixed-end inner support, and a mounting hole is provided in the middle of the fixed-end baffle; A fixed-end support seat, one end of the fixed-end support seat is inserted into the mounting hole, and the other end is provided with a first annular shoulder formed by bending radially outward, and together with the fixed-end baffle, forms the first annular mounting groove.

3. The vehicle-mounted vacuum insulated gas cylinder according to claim 2, wherein The fixed-end inner support includes a fixed-end inner sleeve and a fixed-end inner cover arranged at one end of the fixed-end inner sleeve; Among them, the fixed-end baffle is connected to the fixed-end inner sleeve and is located at a position of the fixed-end inner sleeve close to the fixed-end inner cover.

4. The vehicle-mounted vacuum insulated gas cylinder according to claim 3, wherein Fixed-end ventilation holes communicating the spaces on both sides of the fixed-end baffle are provided on the fixed-end baffle.

5. The vehicle-mounted vacuum insulated gas cylinder according to claim 1, wherein The fixed-end outer support assembly includes: A fixed-end outer support, fixedly connected to the outer container, and a first annular flange formed by bending radially inward is provided at one end of the fixed-end outer support close to the fixed-end inner support assembly; A fixed-end outer cover, fixedly connected to one end of the fixed-end outer support away from the fixed-end inner support assembly, and an annular shaft cylinder extending axially is provided on the side of the fixed-end outer cover facing the fixed-end inner support assembly, and the space between the end of the annular shaft cylinder and the first annular flange forms the second annular mounting groove.

6. The vehicle-mounted adiabatic gas cylinder according to any one of claims 1 to 5, characterized in that, A sliding-end support structure is provided at the second end in the axial direction between the inner container and the outer container. The sliding-end support structure includes: A sliding-end inner support, fixedly connected to the inner container; A sliding-end outer support, fixedly connected to the outer container; An annular heat insulation support assembly, arranged inside the sliding-end outer support, and the axial direction of the annular heat insulation support assembly is the same as the axial direction of the inner container and the outer container; and A sliding support assembly, one end of the sliding support assembly is fixedly connected to the sliding-end inner support, and the other end is inserted into the shaft hole of the annular heat insulation support assembly and can slide axially relative to the shaft hole of the annular heat insulation support assembly.

7. The vehicle-mounted vacuum insulated gas cylinder according to claim 6, wherein The annular heat insulation support assembly includes a first annular baffle, a second annular baffle, and an annular heat insulation member clamped between the first annular baffle and the second annular baffle; Wherein, the edges of the first annular baffle and the second annular baffle are fixedly connected to the outer support of the sliding end.

8. The vehicle-mounted cryogenic gas cylinder according to claim 7, wherein The central opening diameters of the first annular baffle and the second annular baffle are smaller than the central opening diameter of the annular heat insulation member.

9. The vehicle-mounted cryogenic gas cylinder according to claim 6, wherein At least two groups of the annular heat insulation support assemblies are axially spaced in the outer support of the sliding end.

10. The vehicle-mounted cryogenic gas cylinder according to claim 6, wherein The sliding support assembly includes a hollow sliding support member and a heat insulation filling member filled inside the sliding support member.

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