Vertical cryogenic storage tank

Abstract

The application relates to a vertical low-temperature storage tank, which comprises an outer shell, an inner container arranged in the outer shell and used for storing low-temperature medium, the inner container comprising a first main body, a first head arranged at the lower end of the first main body and a second head arranged at the upper end of the first main body, a bottom support structure with one end connected to the outer wall of the first head and the other end extending in the vertical direction and connected to the inner wall of the outer shell, and an elastic support structure with one end connected to the outer wall of the first head and the other end connected to the inner wall of the outer shell, wherein the elastic support structure is in a tension state. According to the vertical low-temperature storage tank, the stability of the inner container in the outer shell can be improved, and the inner container can be stably installed in the outer shell under various working conditions through the joint support of the bottom support structure and the elastic support structure. Meanwhile, the outer wall of the first main body of the inner container can be prevented from being damaged through the connection of the elastic support structure on the first head.

Description

Technical Field

[0001] This invention relates to the field of storage tank technology, and in particular to a vertical cryogenic storage tank. Background Technology

[0002] In the field of cryogenic technology, cryogenic liquefied gases refer to gases that exist in liquid form below -160°C, such as liquid oxygen, liquid nitrogen, liquid argon, liquid hydrogen, and liquid methane. Because the liquid volume of these gases is about 600 times smaller than that of the gaseous state, they are often stored and transported in liquid form.

[0003] Equipment for transporting cryogenic liquefied gases is generally tank trucks or tank bodies. Currently, vertical cryogenic storage tanks typically consist of an inner liner, an outer shell, and a supporting structure. The supporting structure generally includes a bottom support structure and a middle support structure. The bottom support structure uses steel pipe supports, while the middle support structure usually uses cross braces or fiberglass supports. When existing vertical cryogenic storage tanks experience contraction and deformation due to cooling, the supporting structure also deforms, which can easily damage the outer wall of the inner liner, leading to poor thermal insulation performance of the inner liner and affecting its cryogenic storage performance. Summary of the Invention

[0004] The purpose of this application is to provide a cryogenic storage tank to optimize the heat leakage of the support structure in vertical cryogenic storage tanks in related technologies, prevent the insulation performance of the inner container from being reduced, and improve the installation stability of the support structure.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0006] According to one aspect of the present invention, this application provides a vertical cryogenic storage tank, comprising: an outer shell; an inner container disposed within the outer shell for storing a cryogenic medium; the inner container comprising a first main body, a first end cap disposed at the lower end of the first main body, and a second end cap disposed at the upper end of the first main body; a bottom support structure, one end of which is connected to the outer wall of the first end cap, and the other end extending vertically and connected to the inner wall of the outer shell; an elastic support structure, one end of which is connected to the outer wall of the first end cap, and the other end of which is connected to the inner wall of the outer shell; the elastic support structure is disposed around the periphery of the bottom support structure; the elastic support structure is in a tensioned state.

[0007] In some embodiments of this application, the elastic support structure is provided in multiple ways, and the multiple elastic support structures are arranged circumferentially around the periphery of the bottom support structure at intervals.

[0008] In some embodiments of this application, the bottom support structure is located at the axis of the inner container; a plurality of elastic support structures are evenly arranged around the periphery of the bottom support structure.

[0009] In some embodiments of this application, the elastic support structure extends vertically, with the upper end of the elastic support structure inclined toward the axis away from the inner container, so that the extension direction of the elastic support structure forms an angle with the axis direction of the inner container.

[0010] In some embodiments of this application, the outer shell includes a second body, a third end cap disposed at the lower end of the second body, and a fourth end cap disposed at the upper end of the second body; the upper end of the elastic support structure is connected to the outer wall of the first end cap, and the lower end of the elastic support structure is connected to the inner wall of the third end cap.

[0011] In some embodiments of this application, the elastic support structure includes a first lug, a second lug, and a pull strap; the first lug is fixed to the outer wall of the first end cap; the second lug is fixed to the inner wall of the third end cap; the upper end of the pull strap is connected to the first lug, the lower end of the pull strap is connected to the second lug, and the pull strap is in a taut state.

[0012] In some embodiments of this application, the outer wall of the third end cap is provided with a downwardly protruding support leg; the support leg is provided with a mounting cavity, which is connected to the inner wall of the outer shell; the second support lug is fixed to the inner wall of the mounting cavity; the pull strap extends into the mounting cavity and is connected to the second support lug.

[0013] In some embodiments of this application, the support legs are provided in multiple ways, and the multiple support legs are arranged to extend vertically; the multiple support legs are evenly arranged around the center of the third end cap.

[0014] In some embodiments of this application, the lower ends of the plurality of legs are all on the same horizontal plane to support the vertical cryogenic storage tank.

[0015] In some embodiments of this application, the support leg has an opening facing the inner container, and the mounting cavity communicates with the interior of the outer shell through the opening; the pull strap extends into the mounting cavity through the opening, and the pull strap is spaced apart from the peripheral sidewall of the opening.

[0016] In some embodiments of this application, a first manifold seat is sandwiched between the bottom support structure and the first end cap, the upper side wall of the first manifold seat is connected to the outer wall of the first end cap, and the upper end of the bottom support structure is connected to the lower side wall of the first manifold seat.

[0017] In some embodiments of this application, the bottom support structure includes a first support member, a first cover, and a reinforcing plate; one end of the first support member is connected to the lower side wall of the first manifold seat, the first cover is disposed on the other end of the first support member and connected to the other end of the first support member; the outer shell is connected to the outer wall of the first cover; the reinforcing plate is sleeved around the outer wall of the first cover; a first positioning ring is provided on the lower side wall of the first manifold seat, and the first positioning ring is sleeved on the end of the first support member connected to the lower side wall of the first manifold seat.

[0018] In some embodiments of this application, the first support member is made of a non-metallic material.

[0019] In some embodiments of this application, the vertical cryogenic storage tank further includes a top support structure disposed between the second end cap and the outer shell; the vertical cryogenic storage tank further includes a second manifold seat, the lower side wall of the second manifold seat is connected to the outer wall of the second end cap, the lower end of the top support structure is connected to the upper side wall of the second manifold seat, and the upper end of the top support structure is connected to the inner wall of the outer shell.

[0020] In some embodiments of this application, the top support structure includes a second support member, a second cover, and a fixing plate; the lower end of the second support member is connected to the lower side wall of the second manifold seat, the second cover is placed on the upper end of the second support member and connected to the upper end of the second support member; the outer periphery of the fixing plate is connected to the outer shell, the fixing plate has a through hole, the second support member passes through the through hole and is connected to the periphery of the through hole; the lower end of the second cover is connected to the upper side wall of the fixing plate; a second positioning ring is provided on the upper side wall of the second manifold seat, and the second positioning ring is sleeved on the end of the top support structure connected to the second manifold seat.

[0021] In some embodiments of this application, the second support member is made of a non-metallic material.

[0022] As can be seen from the above technical solution, the vertical cryogenic storage tank provided by the present invention has at least the following advantages and positive effects:

[0023] The vertical cryogenic storage tank provided in this application connects the upper end of the bottom support structure to the outer wall of the first end cap and the lower end to the inner wall of the outer shell, thus forming a support between the inner container and the outer shell. One end of the elastic support structure is connected to the first end cap, and the other end is connected to the inner wall of the outer shell. This elastic support structure restricts the relative movement between the inner container and the outer shell, improving the stability of the inner container within the outer shell. The combined support of the bottom support structure and the elastic support structure ensures that the inner container can be stably installed within the outer shell under various operating conditions. Furthermore, by using the elastic support structure connected to the inner container through the first end cap, when the inner container receives cryogenic media and contracts due to cooling, the connection of the elastic support structure to the first end cap prevents damage to the outer wall of the inner container's first main body, thereby avoiding the problem of reduced thermal insulation performance caused by damage to the outer wall of the inner container's first main body. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a vertical cryogenic storage tank provided in an embodiment of the present invention.

[0025] Figure 2 yes Figure 1 Enlarged view of section A.

[0026] Figure 3 yes Figure 1 Enlarged view of section B.

[0027] Figure 4 yes Figure 1 Enlarged view of section C.

[0028] The reference numerals in the attached drawings are explained as follows: 1. Inner container; 11. First body; 12. First end cap; 13. Second end cap; 2. Outer shell; 21. Second body; 22. Third end cap; 23. Fourth end cap; 3. Bottom support structure; 31. First support member; 32. First cover; 33. Reinforcing plate; 4. Top support structure; 41. Second support member; 42. Second cover; 43. Fixing plate; 44. Fixing ring; 5. Elastic support structure; 51. First lug; 511. First shaft pin; 52. Second lug; 521. Second shaft pin; 522. Fastener; 53. Pull strap; 6. First manifold seat; 61. First positioning ring; 7. Second manifold seat; 71. Second positioning ring; 8. Pad; 9. Support leg; 91. Mounting cavity; 92. Opening. Detailed Implementation

[0029] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Equipment for transporting cryogenic liquefied gases is generally tank trucks or tank bodies. Currently, vertical cryogenic storage tanks typically consist of an inner liner, an outer shell, and a supporting structure. The supporting structure generally includes a bottom support structure and a middle support structure. The bottom support structure uses steel pipe supports, while the middle support structure usually uses cross braces or fiberglass supports. When existing vertical cryogenic storage tanks experience contraction and deformation due to cooling, the supporting structure also deforms, which can easily damage the outer wall of the inner liner, leading to poor thermal insulation performance of the inner liner and affecting its cryogenic storage performance.

[0034] Figure 1 This is a schematic diagram of the structure of a vertical cryogenic storage tank provided in an embodiment of the present invention.

[0035] Please see Figure 1 As shown, the vertical cryogenic storage tank provided in this application includes an inner container 1, an outer shell 2, a bottom support structure 3, a top support structure 4, and an elastic support structure 5.

[0036] The inner container 1, the bottom support structure 3, the top support structure 4 and the elastic support structure 5 are all installed inside the outer shell 2, and the bottom support structure 3, the top support structure 4 and the elastic support structure 5 are all located between the inner wall of the outer shell 2 and the outer wall of the inner container 1, so as to support the inner container 1 inside the outer shell 2.

[0037] In some embodiments, both the outer shell 2 and the inner container 1 are vertically arranged cylindrical structures, with the inner container 1 disposed inside the outer shell 2, wherein the outer shell 2 and the inner container 1 are coaxially arranged. The inner container 1 is used to store the solution, and the outer shell 2 is used to provide thermal insulation protection for the inner container 1.

[0038] In some embodiments, a vacuum interlayer is provided between the outer shell 2 and the inner container 1 to improve the thermal insulation protection of the inner container 1 provided by the outer shell 2.

[0039] In some embodiments, the inner container 1 is composed of a first body 11, a first end cap 12, and a second end cap 13. The first body 11 is a vertically extending cylindrical structure. The first end cap 12 is located at the lower end of the first body 11 and is sealed to the lower end of the first body 11. The second end cap 13 is located at the upper end of the first body 11 and is sealed to the upper end of the first body 11.

[0040] In some embodiments, the outer wall of the first end cap 12 protrudes downwards, and the outer wall of the second end cap 13 protrudes upwards; both the outer walls of the first end cap 12 and the second end cap 13 are smooth arcuate surfaces. It is understood that the first end cap 12 and the second end cap 13 may also be of other shapes.

[0041] In some embodiments, the outer shell 2 is composed of a second body 21, a third end cap 22 and a fourth end cap 23. The second body 21 is a vertically extending cylindrical structure. The third end cap 22 is located at the lower end of the second body 21 and is sealed to the lower end of the second body 21. The fourth end cap 23 is located at the upper end of the second body 21 and is sealed to the upper end of the second body 21.

[0042] In some embodiments, the outer wall of the third end cap 22 protrudes downwards, and the outer wall of the fourth end cap 23 protrudes upwards; both the outer walls of the third end cap 22 and the fourth end cap 23 are smooth arcuate surfaces. It is understood that the third end cap 22 and the fourth end cap 23 may also be of other shapes.

[0043] Figure 2 yes Figure 1 Enlarged view of section A.

[0044] Please see Figure 1 and Figure 2As shown, in some embodiments, the bottom support structure 3 is disposed in the interlayer between the inner container 1 and the outer shell 2. The bottom support structure 3 is located at the lower end of the inner container 1, one end of the bottom support structure 3 is connected to the outer wall of the first end cap 12, and the other end of the bottom support structure 3 extends vertically and is connected to the inner wall of the third end cap 22. The bottom support structure 3 enables a support to be formed between the inner container 1 and the outer shell 2, so that the inner container 1 can be supported inside the outer shell 2.

[0045] In some embodiments, the bottom support structure 3 is located at the center of the outer wall of the first end cap 12, and the central axis of the bottom support structure 3 is consistent with the central axis of the inner container 1, that is, the bottom support structure 3 and the inner container 1 are coaxially arranged, thereby making the force on the bottom support structure 3 more uniform and improving the stability of the bottom support structure 3.

[0046] It should be noted that in some other embodiments, the bottom support structure 3 may also be located at other positions on the outer wall of the first end cap 12.

[0047] Please see Figure 1 and Figure 2 As shown, in some embodiments, a first manifold seat 6 is sandwiched between the bottom support structure 3 and the first end cap 12. The upper side wall of the first manifold seat 6 is connected to the outer wall of the first end cap 12, and the upper end of the bottom support structure 3 is connected to the lower side wall of the first manifold seat 6. The bottom support structure 3 is connected to the first end cap 12 through the first manifold seat 6. Therefore, the first manifold seat 6 can also serve as a partial support for the inner container 1. Moreover, the contact area between the first manifold seat 6 and the outer wall of the first end cap 12 is large, which can improve the connection stability between the inner container 1 and the outer shell 2.

[0048] In some embodiments, the first manifold seat 6 is drilled with holes to connect the pipes to the interior of the inner container 1, so that the pipes of the inner container 1 do not need to be led out from the first end cap 12, thus protecting the integrity of the outer wall of the first end cap 12 and improving the thermal insulation of the outer wall of the first end cap 12.

[0049] Please see Figure 2 As shown, in some embodiments, the bottom support structure 3 includes a first support member 31, a first cover 32, and a reinforcing plate 33.

[0050] In some embodiments, the first support member 31 has a cylindrical structure extending vertically. The upper end of the first support member 31 is connected to the lower side wall of the first manifold seat 6, and the lower end of the first support member 31 is connected to the first cover 32. The first cover 32 is placed on the lower end of the first support member 31, and the first cover 32 passes through the third end cap 22. The third end cap 22 is arranged around the outer side wall of the first cover 32 and is connected to the outer side wall of the first cover 32, so that the first support member 31 and the first cover 32 are connected and fixed to the third end cap 22, thereby jointly providing support for the inner container 1.

[0051] In some embodiments, the first support member 31 is made of fiberglass instead of metal, which greatly reduces the heat input of the outer shell 2 and the inner container 1 and improves the thermal insulation performance of the vertical cryogenic storage tank.

[0052] In some embodiments, the reinforcing plate 33 is arranged around the outer wall of the first cover 32, the reinforcing plate 33 is attached to the outer wall of the third end cap 22, and the reinforcing plate 33 is adapted to the arcuate contour of the third end cap 22, thereby increasing the stability of the bottom support structure 3.

[0053] In some embodiments, multiple reinforcing plates 33 are provided, and the multiple reinforcing plates 33 are stacked and attached to the outer wall of the third end cap 22.

[0054] In some embodiments, a first positioning ring 61 is provided on the lower side wall of the first manifold seat 6. The first positioning ring 61 can be adapted to the upper end of the first support member 31. The first positioning ring 61 can be sleeved on the outer peripheral wall of the upper end of the first support member 31, thereby enabling the first support member 31 to be coaxially arranged with the inner container 1, and improving the support stability of the first support member 31 for the inner container 1.

[0055] Figure 3 yes Figure 1 Enlarged view of section B.

[0056] Please see Figure 1 and Figure 3 As shown, in some embodiments, a top support structure 4 is disposed in the interlayer between the inner container 1 and the outer shell 2. The top support is located at the upper end of the inner container 1, with one end connected to the outer wall of the second end cap 13 and the other end extending vertically and connected to the inner wall of the fourth end cap 23. The top support structure 4 enables a support to be formed between the upper end of the inner container 1 and the outer shell 2, thereby increasing the stability of the inner container 1 within the outer shell 2. This allows the inner container 1 to be supported within the outer shell 2.

[0057] In some embodiments, the top support structure 4 is located at the center of the outer wall of the second end cap 13, and the central axis of the top support structure 4 is consistent with the central axis of the inner container 1, that is, the top support structure 4 and the inner container 1 are coaxially arranged, thereby making the force on the top support structure 4 more uniform and improving the stability of the support between the top support structure 4 and the inner container 1.

[0058] It should be noted that in some other embodiments, the top support structure 4 may also be located at other positions on the outer wall of the second end cap 13.

[0059] In some embodiments, the lower end of the inner container 1 is connected to the bottom support structure 3, and the upper end of the inner container 1 is connected to the top support structure 4. The inner container 1, the top support structure 4, and the bottom support structure 3 are all coaxially arranged. Thus, the inner container 1 can improve the overall rigidity of the vertical cryogenic storage tank through the top support structure 4 and the bottom support structure 3, so that the inner container 1 is stably connected to the outer shell 2 and stably supported inside the outer shell 2.

[0060] Please see Figure 3 As shown, in some embodiments, a second manifold seat 7 is provided between the top support structure 4 and the second end cap 13. The lower side wall of the second manifold seat 7 is connected to the outer wall of the second end cap 13, and the lower end of the top support structure 4 is connected to the upper side wall of the second manifold seat 7, so that the top support structure 4 and the second end cap 13 are connected and fixed through the second manifold seat 7. Therefore, the second manifold seat 7 can also serve as part of the support for the inner container 1, and the contact area between the second manifold seat 7 and the outer wall of the second end cap 13 is large, which can improve the connection stability between the inner container 1 and the outer shell 2.

[0061] In some embodiments, the second manifold seat 7 has internal holes drilled for welding pipes to connect to the interior of the inner container 1, so that the pipes of the inner container 1 do not need to be led out from the second end cap 13, thus protecting the integrity of the outer wall of the second end cap 13 and improving the heat insulation of the outer wall of the second end cap 13. It also makes it easier to wind the outer wall of the inner container 1.

[0062] Please see Figure 3 As shown, in some embodiments, the top support structure 4 includes a second support member 41, a second cover 42, and a fixing plate 43.

[0063] In some embodiments, the second support member 41 is a cylindrical body extending vertically, and its lower end is fixedly connected to the upper sidewall of the second manifold seat 7. The second cover 42 is placed on the upper end of the second support member 41 and connected to it. The outer periphery of the fixing plate 43 is connected to the inner wall of the fourth end cap 23. The fixing plate 43 is horizontally arranged, and the lower end of the second cover 42 is connected to the upper sidewall of the fixing plate 43. The fixing plate 43 has a through hole in its center, and the upper end of the second support member 41 passes through the through hole and is connected to the peripheral sidewall of the through hole. Thus, the upper end of the inner container 1 is connected through the second support member 41, the second cover 42, and the fixing plate 43, providing support for the upper end of the inner container 1.

[0064] In some embodiments, a second positioning ring 71 is provided on the upper side wall of the second manifold seat 7. The second positioning ring 71 can be adapted to the lower end of the second support member 41. The second positioning ring 71 can be sleeved on the outer peripheral wall of the lower end of the second support member 41, thereby enabling the second support member 41 to be coaxially arranged with the inner container 1, and improving the support stability of the second support member 41 for the inner container 1.

[0065] In some embodiments, the second support member 41 is made of fiberglass instead of metal, which greatly reduces the heat input of the outer shell 2 and the inner container 1 and improves the thermal insulation performance of the vertical cryogenic storage tank.

[0066] In some embodiments, a fixing ring 44 is sleeved on the outer periphery of the upper end of the second support member 41. The upper end of the fixing ring 44 is connected to the inner wall of the second cover 42. The peripheral sidewall of the through hole on the fixing plate 43 is arranged around the outer sidewall of the fixing ring 44, thereby improving the stability between the second support member 41 and the fixing plate 43 through the fixing ring 44.

[0067] Figure 4 yes Figure 1 Enlarged view of section C.

[0068] Please see Figure 1 and Figure 4As shown, in some embodiments, the elastic support structure 5 is disposed in the interlayer between the inner container 1 and the outer shell 2. The elastic support structure 5 is located at the lower end of the inner container 1, with one end connected to the outer wall of the first end cap 12 and the other end connected to the inner wall of the outer shell 2 and the inner wall of the third end cap 22. The elastic support structure 5 is also in a tensioned state. By connecting the two ends of the elastic support structure 5 to the first end cap 12 and the inner wall of the outer shell 2 respectively, and by keeping the elastic support structure 5 in a tensioned state, the elastic support structure 5 can constrain the displacement between the inner container 1 and the outer shell 2 when the inner container 1 experiences low-temperature contraction. It can also alleviate the shaking experienced during the transportation of the vertical cryogenic storage tank, preventing relative movement between the inner container 1 and the outer shell 2, thereby further improving the stability of the inner container 1 within the outer shell 2. At the same time, by connecting the elastic support structure 5 to the first end cap 12, the outer wall of the first main body 11 of the inner container 1 can be prevented from being damaged, thus avoiding the problem of reduced thermal insulation performance after the outer wall of the first main body 11 of the inner container 1 is damaged.

[0069] In some embodiments, multiple elastic support structures 5 are provided, and the multiple elastic support structures 5 are arranged circumferentially around the periphery of the bottom support structure 3 at intervals. Specifically, three elastic support structures 5 are provided, and the three elastic support structures 5 are arranged circumferentially around the periphery of the bottom support structure 3 at intervals.

[0070] In some embodiments, a plurality of elastic support structures 5 are evenly arranged around the periphery of the bottom support structure 3 so that the outer wall of the inner container 1 and the outer shell 2 are subjected to uniform force, thereby improving the support stability of the inner container 1.

[0071] In some embodiments, the elastic support structure 5 extends vertically, with its upper end tilted away from the axis of the inner container 1, so that the extension direction of the elastic support structure 5 and the axis of the inner container 1 are at an angle. When a low-temperature medium is installed inside the inner container 1, the inner container 1 will deform due to cooling. Since the elastic support structure 5 is in a tensioned state, the deformation of the inner container 1 will cause the upper end of the elastic support structure 5 to shift, thereby changing the angle between the extension direction of the elastic support structure 5 and the axis of the inner container 1.

[0072] In some embodiments, the angle between the extension direction of the elastic support structure 5 and the axis of the inner container 1 is less than 10°, for example, 3 to 5°, so that after the inner container 1 deforms due to cooling, the upper end of the elastic support structure 5 is displaced, and the extension direction of the elastic support structure 5 is aligned with the axis of the inner container 1. Even after displacement, the elastic support structure 5 is arranged to extend vertically, thereby achieving the best stress state between the elastic support structure 5 and the inner container 1.

[0073] It should be noted that, in some other embodiments, the angle between the extension direction of the elastic support structure 5 and the axis of the inner container 1 can also be adjusted according to the actual situation.

[0074] Please see Figure 4 As shown, in some embodiments, the elastic support structure 5 includes a first lug 51, a second lug 52, and a pull strap 53.

[0075] The first lug 51 is fixed to the pad 8 and connected to the outer wall of the first end cap 12 via the pad 8. The second lug 52 is fixed to the inner wall of the third end cap 22. The upper end of the pull strap 53 is connected to the second lug 52, and the lower end of the pull strap 53 is also connected to the second lug 52. The pull strap 53 is in a taut state, thus connecting the first end cap 12 and the third end cap 22 through the first lug 51, the second lug 52, and the pull strap 53. This helps to restrain the displacement between the inner container 1 and the outer shell 2, and also helps to alleviate the shaking during the transportation of the vertical cryogenic storage tank, preventing relative movement between the inner container 1 and the outer shell 2, thereby further improving the stability of the inner container 1 within the outer shell 2.

[0076] In some embodiments, a first pivot pin 511 is provided on the first lug 51, and the upper end of the pull strap 53 is connected to the first lug 51 via the first pivot pin 511. A second pivot pin 521 is provided on the second lug 52, and the lower end of the pull strap 53 is connected to the second lug 52 via the second pivot pin 521. At the same time, a fastener 522 is also provided on the second lug 52, which fixes the second pivot pin 521 and the lower end of the pull strap 53 together.

[0077] Please see Figure 4 As shown, in some embodiments, the outer wall of the third end cap 22 has a downwardly protruding support leg 9, and the support leg 9 has a mounting cavity 91 that communicates with the inner wall of the outer shell 2. The second lug 52 is fixed to the inner wall of the mounting cavity 91. The pull strap 53 can extend into the mounting cavity 91 and connect with the second lug 52. The support leg 9 can provide mounting space for the second lug 52, thereby reducing the space occupied inside the outer shell 2 and improving the space utilization rate inside the outer shell 2. At the same time, the support leg 9 can also increase the length of the pull strap 53, thereby reducing heat transfer between the outer shell 2 and the inner container 1 and improving the thermal insulation performance of the inner container 1.

[0078] In some embodiments, multiple legs 9 are provided, which extend vertically and are evenly arranged around the center of the third end cap 22, so as to provide installation space for multiple second lugs 52 through the multiple legs 9, thereby further reducing the space occupied inside the housing 2.

[0079] In some embodiments, the lower ends of the plurality of legs 9 are all on the same horizontal plane so as to be used to support the vertical cryogenic storage tank.

[0080] In some embodiments, the support leg 9 has an opening 92 facing the inner container 1, and the mounting cavity 91 is connected to the inner shell 2 through the opening 92. The pull strap 53 can extend into the mounting cavity 91 through the opening 92, and the pull strap 53 is spaced apart from the peripheral wall of the opening 92. When the inner container 1 shrinks due to cold, the pull strap 53 can buffer the relative movement between the inner container 1 and the outer shell 2. When the shrinkage deformation of the inner container 1 is large, the gap between the pull strap 53 and the opening 92 allows the first support ear 51 to retract inward, so that the axial direction of the pull strap 53 can form a certain angle with the axis of the inner container 1. That is, by providing the opening 92, the shrinkage of the inner container 1 due to cold can be compensated, thereby preventing the elastic support structure 5 from being damaged due to excessive shrinkage deformation of the inner container 1.

[0081] The connection between the inner container 1 and the outer shell 2 is achieved by setting a bottom support structure 3 between the first end cap 12 and the second end cap 13, and a top support structure 4 between the second end cap 13 and the fourth end cap 23. This organically connects the inner container 1 and the outer shell 2, enhancing the overall rigidity of the vertical cryogenic storage tank. At the same time, an elastic support structure 5 is provided between the first end cap 12 and the third end cap 22. When the inner container 1 experiences cryogenic contraction, it can restrain the displacement between the inner container 1 and the outer shell 2. It can also alleviate the shaking experienced during the transportation and use of the vertical cryogenic storage tank, preventing relative movement between the inner container 1 and the outer shell 2, thereby further improving the stability of the inner container 1 within the outer shell 2.

[0082] As can be seen from the above technical solution, the vertical cryogenic storage tank provided by the present invention has at least the following advantages and positive effects:

[0083] The vertical cryogenic storage tank provided in this application connects the upper end of the bottom support structure 3 to the outer wall of the first end cap 12 and the lower end to the inner wall of the outer shell 2, thus forming a support between the inner container 1 and the outer shell 2. One end of the elastic support structure 5 is connected to the first end cap 12, and the other end is connected to the inner wall of the outer shell 2. This elastic support structure 5 restricts the relative movement between the inner container 1 and the outer shell 2, improving the stability of the inner container 1 within the outer shell 2. The combined support of the bottom support structure 3 and the elastic support structure 5 ensures that the inner container 1 can be stably installed within the outer shell 2 under various operating conditions. Furthermore, by connecting the elastic support structure 5 to the inner container 1 via the first end cap 12, when the inner container 1 receives the cryogenic medium and contracts due to cooling, the connection of the elastic support structure 5 to the first end cap 12 prevents damage to the outer wall of the first main body 11 of the inner container 1, thereby avoiding the problem of reduced thermal insulation performance caused by damage to the outer wall of the first main body 11 of the inner container 1.

[0084] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A vertical cryogenic storage tank, characterized in that, include: shell; An inner container is disposed within the outer shell and is used to store a cryogenic medium; the inner container includes a first body, a first end cap disposed at the lower end of the first body, and a second end cap disposed at the upper end of the first body; The bottom support structure has one end connected to the outer wall of the first end cap, and the other end extends vertically and connects to the inner wall of the outer shell. An elastic support structure is provided, with one end connected to the outer wall of the first end cap and the other end connected to the inner wall of the outer shell; the elastic support structure is located on the periphery of the bottom support structure; the elastic support structure is in a tensioned state. The elastic support structure extends vertically, with its upper end inclined toward the axis away from the inner container, so that the extension direction of the elastic support structure forms an angle with the axis of the inner container. When a cryogenic medium is assembled inside the inner container, the angle between the extension direction of the elastic support structure and the axis of the inner container changes accordingly. A first manifold seat is sandwiched between the bottom support structure and the first end cap; The bottom support structure includes a first support member, a first cover, and a reinforcing plate; One end of the first support member is connected to the lower side wall of the first manifold seat, and the first cover is placed on the other end of the first support member and connected to the other end of the first support member; the outer shell is connected to the outer wall of the first cover; the reinforcing plate is sleeved around the outer wall of the first cover. A first positioning ring is provided on the lower side wall of the first manifold seat, and the first positioning ring is sleeved on the end of the first support member that is connected to the lower side wall of the first manifold seat.

2. The vertical cryogenic storage tank according to claim 1, characterized in that, The elastic support structure is provided in multiple ways, and the multiple elastic support structures are arranged circumferentially around the periphery of the bottom support structure at intervals.

3. The vertical cryogenic storage tank according to claim 2, characterized in that, The bottom support structure is located at the axis of the inner container; a plurality of elastic support structures are evenly arranged around the periphery of the bottom support structure.

4. The vertical cryogenic storage tank according to claim 1, characterized in that, The outer shell includes a second main body, a third end cap disposed at the lower end of the second main body, and a fourth end cap disposed at the upper end of the second main body; The upper end of the elastic support structure is connected to the outer wall of the first end cap, and the lower end of the elastic support structure is connected to the inner wall of the third end cap.

5. The vertical cryogenic storage tank according to claim 4, characterized in that, The elastic support structure includes a first lug, a second lug, and a pull strap; The first lug is fixed to the outer wall of the first end cap; The second lug is fixed to the inner wall of the third end cap; The upper end of the pull strap is connected to the first lug, and the lower end of the pull strap is connected to the second lug. The pull strap is in a taut state.

6. The vertical cryogenic storage tank according to claim 5, characterized in that, The outer wall of the third end cap is provided with a downwardly protruding support leg; The support leg has a mounting cavity that communicates with the inside of the outer shell; the second support lug is fixed to the inner wall of the mounting cavity; the pull strap extends into the mounting cavity and is connected to the second support lug.

7. The vertical cryogenic storage tank according to claim 6, characterized in that, The support legs are provided in multiple ways, and the multiple support legs are arranged to extend vertically; the multiple support legs are evenly arranged around the center of the third end cap.

8. The vertical cryogenic storage tank according to claim 7, characterized in that, The lower ends of the multiple support legs are all on the same horizontal plane to support the vertical cryogenic storage tank.

9. The vertical cryogenic storage tank according to claim 6, characterized in that, The support leg has an opening facing the inner container, and the mounting cavity communicates with the interior of the outer shell through the opening; The pull strap extends into the mounting cavity through the opening, and the pull strap is spaced apart from the peripheral sidewall of the opening.

10. The vertical cryogenic storage tank according to claim 1, characterized in that, The upper sidewall of the first manifold seat is connected to the outer wall of the first end cap, and the upper end of the bottom support structure is connected to the lower sidewall of the first manifold seat.

11. The vertical cryogenic storage tank according to claim 10, characterized in that, The first support component is made of non-metallic material.

12. The vertical cryogenic storage tank according to claim 1, characterized in that, The vertical cryogenic storage tank also includes a top support structure, which is located between the second end cap and the outer shell; The vertical cryogenic storage tank also includes a second manifold seat, the lower side wall of which is connected to the outer wall of the second end cap, the lower end of the top support structure is connected to the upper side wall of the second manifold seat, and the upper end of the top support structure is connected to the inner wall of the outer shell.

13. The vertical cryogenic storage tank according to claim 12, characterized in that, The top support structure includes a second support member, a second cover, and a fixing plate; The lower end of the second support member is connected to the upper side wall of the second manifold seat, and the second cover is placed on the upper end of the second support member and connected to the upper end of the second support member. The outer periphery of the fixing plate is connected to the outer shell. The fixing plate is provided with a through hole. The second support member passes through the through hole and is connected to the periphery of the through hole. The lower end of the second cover is connected to the upper side wall of the fixing plate. A second positioning ring is provided on the upper side wall of the second manifold seat, and the second positioning ring is sleeved on the end of the top support structure that is connected to the second manifold seat.

14. The vertical cryogenic storage tank according to claim 13, characterized in that, The second support component is made of non-metallic material.

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