Limiting devices and storage containers

Abstract

This invention belongs to the field of storage technology, specifically relating to a limiting device and a storage and transportation container. The limiting device includes a first limiting mechanism and a second limiting mechanism respectively disposed at both ends of the inner container. Both the first and second limiting mechanisms are arranged radially along the inner container. The first limiting mechanism is connected to both the inner container and the outer shell, and the second limiting mechanism is also connected to both the inner container and the outer shell. Each of the first and second limiting mechanisms includes: a connecting seat connected to the outer shell; a first connecting member hinged to the connecting seat; a second connecting member hinged to the inner container; and at least one connecting tube assembly, one end of which is connected to the first connecting member, and the other end of which is connected to the second connecting member. The limiting device and storage and transportation container of this application can ensure the stability of the inner container within the outer shell.

Description

Technical Field

[0001] This application belongs to the field of storage technology, specifically relating to a limiting device and a storage and transportation container. Background Technology

[0002] Cryogenic vacuum insulated containers are mainly used for storing cryogenic liquid media (such as liquid hydrogen and liquid helium) and are key equipment in cryogenic systems. Under the national policy of strongly advocating environmental protection and energy conservation, cryogenic vacuum insulated containers have gained widespread recognition in the cryogenic liquid storage and transportation equipment market and have enormous development potential.

[0003] In related technologies, cryogenic vacuum insulated containers are mainly composed of an inner container and an outer shell. However, during the transportation of cryogenic vacuum insulated containers, the inner container moves inside the outer shell, causing instability in the inner container. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a limiting device and a storage and transportation container, which aims to at least partially solve the technical problem of instability in the inner container.

[0005] The technical solution of this invention is as follows: A limiting device includes a first limiting mechanism and a second limiting mechanism respectively disposed at both ends of an inner container. Both the first limiting mechanism and the second limiting mechanism are arranged radially along the inner container. The first limiting mechanism is connected to the inner container and the outer shell, and the second limiting mechanism is connected to the inner container and the outer shell. Each of the first limiting mechanism and the second limiting mechanism includes: a connecting seat connected to the outer shell; a first connecting member hinged to the connecting seat; a second connecting member hinged to the inner container; and at least one connecting tube assembly, one end of which is connected to the first connecting member and the other end of which is connected to the second connecting member.

[0006] In some embodiments, both the first connector and the second connector include: a ball cap with a first groove; a ball seat connected to the ball cap, the end of the ball seat facing the ball cap having a second groove communicating with the first groove to form a chamber; and a ball body, one end connected to the at least one connecting tube assembly, the other end passing through the ball seat and rotatably disposed within the chamber; wherein the ball cap of the first connector is connected to the connecting seat, and the ball cap of the second connector is connected to the inner container.

[0007] In some embodiments, the end of the ball head seat opposite to the ball head cap has a third groove that communicates with the second groove; wherein, along the direction from the inner container toward the outer shell, the width of the third groove of the first connector gradually decreases, and the width of the third groove of the second connector gradually increases.

[0008] In some embodiments, both the first connector and the second connector further include connecting plates, which are respectively connected to both ends of the connecting pipe assembly.

[0009] In some embodiments, the connecting tube assembly includes: two fasteners connected to the first connector and the second connector, respectively; and a connecting tube connected to the two fasteners.

[0010] In some embodiments, the fastener includes: a tapered outer sleeve; a tapered inner sleeve disposed inside the tapered outer sleeve and threadedly connected to the tapered outer sleeve, and a connecting pipe passing through the tapered inner sleeve; wherein the tapered outer sleeves of the two fasteners are respectively connected to the first connecting member and the second connecting member.

[0011] In some implementations, a clamping element is provided between the tapered inner sleeve and the connecting pipe.

[0012] In some implementations, the connecting pipe is made of a low thermal conductivity material.

[0013] In some embodiments, the connecting pipe includes a plurality of sequentially nested connecting sub-pipes, with adjacent connecting sub-pipes spaced apart and connected to each other.

[0014] In some embodiments, the connecting tube assembly includes two anti-detachment components; both ends of the connecting tube are respectively passed through two fasteners and connected to the two anti-detachment components.

[0015] In some embodiments, the anti-detachment component includes: a fixing part, sleeved on the outside of the connecting tube and connected to the connecting tube; a connecting part, sleeved on the outside of the connecting tube and connected to the end of the fixing part away from the fastener; and at least one insertion part, passing through the fixing part and the connecting tube.

[0016] In some embodiments, the connector has a vacuum cavity, and the limiting device further includes a low thermal conductivity filler material disposed within the vacuum cavity.

[0017] Based on the same inventive concept, this application also provides a storage and transportation container, including an inner container, an outer shell, and the aforementioned limiting device.

[0018] The beneficial effects of the present invention include at least the following: Since the limiting device includes a first limiting mechanism and a second limiting mechanism respectively located at both ends of the inner container, the first limiting mechanism and the second limiting mechanism are arranged radially along the inner container. The first limiting mechanism is connected to the inner container and the outer shell, and the second limiting mechanism is connected to the inner container and the outer shell. Therefore, through the symmetrical distribution of the first limiting mechanism and the second limiting mechanism, a radial composite constraint system is formed to form a three-dimensional spatial limiting network, which conforms to the principle of mechanical symmetry. It can effectively offset the multi-directional impact load during transportation, effectively limit the movement of the inner container in the vertical and radial directions of the outer shell, fix the position of the inner container in the outer shell, and ensure the stability of the inner container in the outer shell.

[0019] Since the connecting seats of the first and second limiting mechanisms are connected to the outer shell, the first connecting member is hinged to the connecting seat, the second connecting member is hinged to the inner container, and at least one connecting tube assembly is connected at one end to the first connecting member and at the other end to the second connecting member, the first connecting member and the second connecting member are connected by at least one connecting tube assembly so that the inner container is connected to the outer shell. The connecting tube assembly is a rigid support member that can adapt to large acceleration loads and ensure the stability of the inner container inside the outer shell.

[0020] When the inner container is filled with cryogenic media (such as liquid hydrogen -253℃, liquid helium -269℃), the inner container will undergo cryogenic contraction. Since the first connector is hinged to the connector seat and the second connector is hinged to the inner container, the connection between the inner container and the outer shell can be effectively adjusted to adapt to the cryogenic conditions, without generating additional temperature stress. This avoids strength or fatigue failure of the first and second limiting mechanisms, further ensuring the stability of the inner container within the outer shell and guaranteeing its safety and reliability within the outer shell. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram showing the arrangement of the first and second limiting mechanisms of the limiting device in some embodiments; Figure 2 for Figure 1 A schematic diagram of the first limiting mechanism of the middle limiting device; Figure 3 for Figure 2 A schematic diagram of the structure of the first connecting member of the middle limiting device; Figure 4 for Figure 2 A schematic diagram of the structure of the second connecting member of the middle limiting device; Figure 5 for Figure 2 A schematic diagram of the connecting pipe assembly of the middle limiting device; Figure 6 for Figure 2 A schematic diagram showing the connection between the connecting pipe assembly of the middle limiting device and the first connecting piece.

[0023] Figure 7 This is a schematic diagram showing the arrangement of the third and fourth limiting mechanisms of the limiting device in some embodiments; Figure 8 for Figure 7 A schematic diagram of the installation of the third limiting mechanism of the middle limiting device; Figure 9 for Figure 7 A schematic diagram of the third limiting mechanism of the middle limiting device; Figure 10 for Figure 7 A schematic diagram of the installation of the fourth limiting mechanism of the middle limiting device; Figure 11 for Figure 7 A schematic diagram of the fourth limiting mechanism of the middle limiting device; Figure 12 for Figure 11 A schematic diagram of the cooperation between the support ring and the support component of the fourth limiting mechanism of the middle limiting device.

[0024] In the attached image: First limiting mechanism 10, connecting seat 11, vacuum chamber 111, first connecting member 12, ball cap 121, ball seat 122, ball body 123, connecting plate 124, second connecting member 13, connecting pipe assembly 14, fastener 141, tapered outer sleeve 1411, tapered inner sleeve 1412, clamping member 1413, connecting pipe 142, anti-detachment member 143, fixing part 1431, connecting part 1432, insertion part 1433; Second limiting mechanism 20; Content container 30; Casing 40; Third limiting mechanism 50, mounting base 51, sealing cover 52, connecting assembly 53, support member 531, support ring 532, waist-shaped hole 5321, locking member 533, limiting member 534, pad 54, heat insulation member 55, fixing ring 551, heat insulation part 552, reinforcing member 56; Fourth limiting mechanism 60. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0029] In related technologies, the inner container is typically mounted inside the outer casing using slings or rods for support. Eight sets of slings or rods are symmetrically arranged around the circumference of the inner container, while an all-metal connecting structure is installed at the axial end of the inner container. These structures suspend and fix the inner container to the center of the outer casing. However, the slings or rods have limited capacity to withstand acceleration loads, posing certain transportation safety risks. This can affect the stability of the inner container during installation within the outer casing, leading to instability and potentially even cracking of the welds, resulting in liquid leakage.

[0030] Based on these technical problems, this application provides a limiting device and a storage and transportation container, which aims to solve the technical problem of instability in the inner container.

[0031] The design concept of this application is that, by using the first limiting mechanism and the second limiting mechanism located at both ends of the inner container, the movement of the inner container in the vertical and radial directions of the outer shell can be effectively restricted, thereby achieving the technical effect of fixing the position of the inner container inside the outer shell and ensuring the stability of the inner container inside the outer shell.

[0032] Specific technical solutions will now be described in detail with reference to the accompanying drawings, which are not necessarily drawn to scale. Similar or identical reference numerals may be used to designate the same or similar parts in different figures. The use of similar or identical reference numerals in different figures does not mean that all figures including similar or identical reference numerals constitute a single or the same embodiment. The accompanying drawings illustrate the various embodiments discussed in this application in a generalized, illustrative, and not restrictive manner.

[0033] Combination Figure 1 and Figure 2 The limiting device in this embodiment includes a first limiting mechanism 10 and a second limiting mechanism 20. The first limiting mechanism 10 and the second limiting mechanism 20 are respectively disposed at both ends of the inner container 30, and both are arranged radially along the inner container 30. The first limiting mechanism 10 is connected to the inner container 30 and the outer shell 40, and the second limiting mechanism 20 is also connected to the inner container 30 and the outer shell 40. Both the first limiting mechanism 10 and the second limiting mechanism 20 include a connecting seat 11, a first connecting member 12, a second connecting member 13, and a connecting tube assembly 14. The connecting seat 11 is connected to the outer shell 40. The first connecting member 12 is hinged to the connecting seat 11. The second connecting member 13 is hinged to the inner container 30. At least one end of the connecting tube assembly 14 is connected to the first connecting member 12, and the other end is connected to the second connecting member 13.

[0034] The number of the first limiting mechanism 10 and the second limiting mechanism 20 can be one or more.

[0035] The number of connecting pipe assemblies 14 can be one or more.

[0036] Since the limiting device includes a first limiting mechanism 10 and a second limiting mechanism 20 respectively located at both ends of the inner container 30, and both the first limiting mechanism 10 and the second limiting mechanism 20 are arranged radially along the inner container 30, the first limiting mechanism 10 is connected to the inner container 30 and the outer shell 40, and the second limiting mechanism 20 is connected to the inner container 30 and the outer shell 40, the first limiting mechanism 10 and the second limiting mechanism 20 are symmetrically distributed to form a radial composite constraint system, thereby forming a three-dimensional spatial limiting network. This conforms to the principle of mechanical symmetry, can effectively offset the multi-directional impact load during transportation, and effectively limit the movement of the inner container 30 in the vertical and radial directions of the outer shell 40, so as to fix the position of the inner container 30 inside the outer shell 40 and ensure the stability of the inner container 30 inside the outer shell 40.

[0037] Since the connecting seat 11 of the first limiting mechanism 10 and the second limiting mechanism 20 is connected to the outer shell 40, the first connecting member 12 is hinged to the connecting seat 11, the second connecting member 13 is hinged to the inner container 30, and at least one connecting tube assembly 14 is connected at one end to the first connecting member 12 and at the other end to the second connecting member 13, the first connecting member 12 and the second connecting member 13 are connected by at least one connecting tube assembly 14 so that the inner container 30 is connected to the outer shell 40. The connecting tube assembly 14 is a rigid support member that can adapt to large acceleration loads and ensure the stability of the inner container 30 within the outer shell 40.

[0038] When the inner container 30 is filled with a cryogenic medium (such as liquid hydrogen -253°C, liquid helium -269°C), the inner container 30 will undergo cryogenic contraction. Since the first connector 12 is hinged to the connector 11 and the second connector 13 is hinged to the inner container 30, the connection between the inner container 30 and the outer shell 40 can be effectively adjusted to adapt to the cryogenic conditions, without generating additional temperature stress, avoiding strength or fatigue failure of the first limiting mechanism 10 and the second limiting mechanism 20, and further ensuring the stability of the inner container 30 within the outer shell 40.

[0039] The first limiting mechanism 10 and the second limiting mechanism 20 can make full use of the natural space between the inner container 30 and the outer shell 40 without affecting the volume of the inner container 30, thus ensuring the transport capacity of the inner container 30.

[0040] Combination Figure 1 , Figure 3 and Figure 4 In some embodiments, to achieve hinged connection between the first connector 12 and the connecting seat 11, and hinged connection between the second connector 13 and the inner container 30, both the first connector 12 and the second connector 13 include: a ball cap 121, a ball seat 122, and a ball body 123. The ball cap 121 has a first groove. The ball seat 122 is connected to the ball cap 121, and the end of the ball seat 122 facing the ball cap 121 has a second groove, which communicates with the first groove to form a chamber. One end of the ball body 123 is connected to at least one connecting tube assembly 14, and the other end passes through the ball seat 122 and is rotatably disposed within the chamber. Specifically, the ball cap 121 of the first connector 12 is connected to the connecting seat 11, and the ball cap 121 of the second connector 13 is connected to the inner container 30.

[0041] When the inner container 30 contracts due to low temperature, the inner container 30 drives the ball cap 121 of the second connector 13 to move, so that the ball head 123 of the second connector 13 moves within the cavity. At the same time, the ball head 123 of the first connector 12 moves within the cavity through the connecting tube assembly 14, realizing the hinge. This effectively adjusts and adapts the connection between the inner container 30 and the outer shell 40 under low temperature conditions, without generating additional temperature stress, and avoids strength or fatigue failure of the first limiting mechanism 10 and the second limiting mechanism 20, further ensuring the stability of the inner container 30 within the outer shell 40.

[0042] Combination Figure 3 and Figure 4 In some embodiments, to allow space for the movement of the ball head 123, the end of the ball head seat 122 opposite to the ball head cap 121 has a third groove communicating with the second groove. Specifically, along the direction from the inner container 30 towards the outer casing 40, the width of the third groove of the first connector 12 gradually decreases to avoid interfering with the movement of the ball head 123 of the first connector 12, thus ensuring smooth movement of the ball head 123. The width of the third groove of the second connector 13 gradually increases to avoid interfering with the movement of the ball head 123 of the second connector 13, thus ensuring smooth movement of the ball head 123 of the second connector 13.

[0043] Combination Figure 3 and Figure 4 In some embodiments, in order to facilitate the connection of the first connector 12 and the second connector 13 to the connecting pipe assembly 14, both the first connector 12 and the second connector 13 further include a connecting plate 124, and the two connecting plates 124 are respectively connected to the two ends of the connecting pipe assembly 14.

[0044] Combination Figure 2 and Figure 5 In some embodiments, to connect the connecting pipe assembly 14 to the first connector 12 and the second connector 13, the connecting pipe assembly 14 includes fasteners 141 and a connecting pipe 142. Two fasteners 141 are connected to the first connector 12 and the second connector 13, respectively. The connecting pipe 142 is connected to the two fasteners 141 to ensure the stability of the connection between the connecting pipe 142 and the first connector 12 and the second connector 13.

[0045] Combination Figure 6 In some embodiments, the connecting plate 124 has a through hole, and the fastener 141 is embedded in the through hole of the connecting plate 124 to realize the connection between the connecting pipe assembly 14 and the connecting plate 124. At the same time, under the constraint of the inner wall of the through hole, the fastener 141 can clamp the connecting pipe 142 so that the fastener 141 can be adapted to the connecting pipe 142 of different materials.

[0046] Combination Figure 5In some embodiments, to connect the fastener 141 to the connecting pipe 142, the fastener 141 includes a tapered outer sleeve 1411 and a tapered inner sleeve 1412. The tapered inner sleeve 1412 is disposed inside the tapered outer sleeve 1411 and is threadedly connected to the tapered outer sleeve 1411, and the connecting pipe 142 passes through the tapered inner sleeve 1412. The tapered outer sleeves 1411 of the two fasteners 141 are respectively connected to the first connecting member 12 and the second connecting member 13.

[0047] The connecting pipe 142 is inserted into the tapered inner sleeve 1412, and then the tapered inner sleeve 1412 is placed in the tapered outer sleeve 1411. The tapered inner sleeve 1412 is rotated, and under the action of the tapered outer sleeve 1411, the tapered inner sleeve 1412 deforms to clamp the connecting pipe 142, ensuring the stability of the connection between the connecting pipe 142 and the fastener 141. A preload can be applied radially to the inner container 30 by adjusting the position of the tapered inner sleeve 1412 within the tapered outer sleeve 1411.

[0048] During transportation, when the inner container 30 experiences downward pressure due to gravity or impact, the conical surface of the tapered outer sleeve 1411 decomposes the pressure into axial and radial components. The axial component is transmitted to the tapered inner sleeve 1412 through thread engagement, while the radial component creates a self-locking effect on the tapered sleeve contact surface, preventing the threads from loosening. When the inner container 30 experiences upward tension due to acceleration or vibration, the preload of the threaded connection and the mechanical interlocking of the tapered structure provide dual protection. The thread profile design can withstand tensile loads, while the wedge effect of the tapered contact surface further converts the tensile force into positive pressure on the contact surface, resisting separation through friction and ensuring that the connection does not fail. This allows the connecting tube 142 to provide reliable bidirectional load bearing, ensuring the stability of the inner container 30 within the outer casing 40.

[0049] Combination Figure 5 In some embodiments, a clamping member 1413 is provided between the tapered inner sleeve 1412 and the connecting pipe 142. The clamping member 1413 wraps around the outer wall of the connecting pipe 14 to uniformly transmit the preload in the diametrical direction, ensuring the stability of the connection between the connecting pipe 142 and the tapered inner sleeve 1412. For example, the clamping member 1413 can be a soft metal pad, and the material of the clamping member 1413 can be copper.

[0050] In some embodiments, the connecting tube 142 is made of a low thermal conductivity material, which can reduce heat transfer, increase thermal resistance, reduce the heat conducted from the outside to the inner container 30, reduce the evaporation rate of the cryogenic liquefied gas in the inner container 30, and increase storage time. For example, the connecting tube 142 can be made of fiberglass, carbon fiber, etc.

[0051] The connecting tube 142 not only achieves ultra-low thermal conductivity, but also ensures a reliable connection between the inner container 30 and the outer shell 40, realizing two functions in one piece and reducing costs.

[0052] In some embodiments, the connecting pipe 142 includes a plurality of sequentially nested connecting sub-pipes, with adjacent connecting sub-pipes spaced apart and connected. On the one hand, the multiple connecting sub-pipes form a tortuous thermal bridge, which lengthens the thermal bridge, increases thermal resistance, reduces heat conduction, reduces the heat conducted from the outside to the inner container 30, reduces the evaporation rate of cryogenic liquefied gas in the inner container 30, and increases storage time. On the other hand, it improves the supporting strength and its safety and reliability. For example, the connecting sub-pipes can be made of stainless steel.

[0053] The connecting tube 142 not only achieves ultra-low thermal conductivity, but also ensures a reliable connection between the inner container 30 and the outer shell 40, realizing two functions in one piece and reducing costs.

[0054] Combination Figure 2 and Figure 5 In some embodiments, to prevent detachment, the connecting tube assembly 14 includes two anti-detachment components 143. Both ends of the connecting tube 142 are respectively threaded through two fasteners 141 and connected to the two anti-detachment components 143, preventing the connecting tube 142 from falling out of the fasteners 141, ensuring the stability of the connection between the connecting tube 142 and the fasteners 141, ensuring safety, reliability, and redundancy design, and ensuring structural safety.

[0055] Combination Figure 2 and Figure 5 In some embodiments, to prevent detachment, the anti-detachment component 143 includes a fixing part 1431, a connecting part 1432, and an insertion part 1433. The fixing part 1431 is sleeved on the outside of the connecting tube 142 and connected to the connecting tube 142. The connecting part 1432 is sleeved on the outside of the connecting tube 142 and connected to the end of the fixing part 1431 away from the fastener 141. At least one insertion part 1433 passes through the fixing part 1431 and the connecting tube 142 to achieve the connection between the fixing part 1431 and the connecting tube 142. When the connection between the connecting tube 142 and the fastener 141 is unstable, the fixing part 1431 can hold the fastener 141 in place, ensuring the position of the fastener 141 is fixed, preventing the connecting tube 142 from falling out of the fastener 141, ensuring the stability of the connection between the connecting tube 142 and the fastener 141, ensuring safety, reliability, and redundant design, and ensuring structural safety. For example, the number of insertion portions 1433 can be one or more, and the insertion portions 1433 can be connecting rivets.

[0056] Combination Figure 2In some embodiments, the connector 11 has a vacuum chamber 111, which provides insulation, reducing the heat conducted from the outside to the inner container 30, reducing the evaporation rate of the cryogenic liquefied gas in the inner container 30, and increasing the storage time.

[0057] In some embodiments, to further improve thermal resistance and reduce heat conduction, the limiting device further includes a low thermal conductivity filler. The low thermal conductivity filler is disposed within the vacuum cavity 111 to reflect heat and prevent radiation, reducing the heat conducted from the outside to the inner container 30, reducing the evaporation rate of the cryogenic liquefied gas in the inner container 30, and increasing storage time. Exemplarily, the low thermal conductivity filler can be glass fiber or aluminum foil, etc.

[0058] Combination Figure 7 In some embodiments, to further ensure the stability of the inner container 30 within the outer casing 40, the limiting device further includes a third limiting mechanism 50 and two fourth limiting mechanisms 60. The third limiting mechanism 50 is connected to both the inner container 30 and the outer casing 40. Both fourth limiting mechanisms 60 are also connected to both the inner container 30 and the outer casing 40. Specifically, along the axial direction of the inner container 30, the third limiting mechanism 50 is located at the center of the inner container 30, and the third limiting mechanism 50 is located between the two fourth limiting mechanisms 60, which are located between the first limiting mechanism 10 and the second limiting mechanism 20.

[0059] Since the third limiting mechanism 50 is connected to the inner container 30 and the outer shell 40, and the third limiting mechanism 50 is located in the middle of the inner container 30, the third limiting mechanism 50 can mutually restrict the inertial forces in two directions along the axial direction (i.e., longitudinal direction) of the inner container 30, completely constrain the inertial displacement of the inner container 30, fix the position of the inner container 30 in the outer shell 40, and ensure the stability of the inner container 30 in the outer shell 40.

[0060] Since both fourth limiting mechanisms 60 are connected to the inner container 30 and the outer shell 40, and the third limiting mechanism 50 is located between the two fourth limiting mechanisms 60, the third limiting mechanism 50 and the two fourth limiting mechanisms 60 can form a triangle in space. This triangle can withstand torsional loads and prevent the inner container 30 from twisting relative to the outer shell 40. At the same time, it can withstand the lateral loads of the inner container 30 and fix the position of the inner container 30 within the outer shell 40, thus ensuring the stability of the inner container 30 within the outer shell 40.

[0061] The third limiting mechanism 50 and the two fourth limiting mechanisms 60 can make full use of the natural space between the inner container 30 and the outer shell 40 without affecting the volume of the inner container 30, thus ensuring the transport capacity of the inner container 30.

[0062] In some embodiments, two fourth limiting mechanisms 60 are located between the first limiting mechanism 10 and the second limiting mechanism 20, and a third limiting mechanism 60 is located between the two fourth limiting mechanisms 60. Therefore, under the combined action of the first limiting mechanism 10, the second limiting mechanism 20, the third limiting mechanism 60, and the two fourth limiting mechanisms 60, the axial and radial limiting of the inner container 30 can be simultaneously achieved, fixing the position of the inner container 30 within the outer casing 40 and ensuring the stability of the inner container 30 within the outer casing 40. Moreover, the inner container 30 can be suspended in the center of the outer casing 40, avoiding direct contact between the inner container 30 and the outer casing 40, reducing heat transfer between the inner container 30 and the outer casing 40, preventing the vaporization of the cryogenic medium due to the temperature rise of the inner container 30, extending the non-destructive preservation time of the cryogenic medium during storage and transportation, and improving transportation safety and economy.

[0063] Combination Figure 7 In some embodiments, along the axial direction of the inner container 30, the two fourth limiting mechanisms 60 are spaced at the same distance from the center of the inner container 30. It can be understood that the two fourth limiting mechanisms 60 are symmetrical about the radial centerline of the inner container 30, so that the third limiting mechanism 50 and the two fourth limiting mechanisms 60 form a stable "equilateral triangle" structure. This can make the supporting force evenly distributed along the surface of the inner container 30, avoid stress gradients caused by uneven spacing of the supporting points, avoid structural fatigue caused by local stress concentration, significantly extend the structural fatigue life, and improve the service life.

[0064] Combination Figure 7 In some embodiments, along the axial direction of the inner container 30, the third limiting mechanism 50 and the two fourth limiting mechanisms 60 are respectively located on both sides of the inner container 30. It can be understood that along the vertical radial direction of the inner container 30, the third limiting mechanism 50 is located at the top of the inner container 30, and the two fourth limiting mechanisms 60 are located at the bottom of the inner container 30, so as to ensure that the third limiting mechanism 50 and the two fourth limiting mechanisms 60 can withstand torsional loads and prevent the inner container 30 from twisting relative to the outer shell 40. At the same time, they can withstand the lateral loads of the inner container 30.

[0065] Combination Figure 8 , Figure 9 , Figure 10 and Figure 11In some embodiments, to connect the third limiting mechanism 50 and the fourth limiting mechanism 60 to the inner container 30 and the outer casing 40, both the third limiting mechanism 50 and the fourth limiting mechanism 60 include: a mounting base 51, a sealing cover 52, and a connecting assembly 53. The mounting base 51 is disposed on the inner container 30. The sealing cover 52 is disposed outside the outer casing 40 and communicates with the outer casing 40 to prevent the sealing cover 52 from encroaching on the internal space of the outer casing 40. The connecting assembly 53 is connected to the mounting base 51 and the sealing cover 52 to achieve the connection between the inner container 30 and the outer casing 40.

[0066] In some embodiments, to facilitate the connection between the mounting base 51 and the inner container 30, both the third limiting mechanism 50 and the fourth limiting mechanism 60 further include a pad 54. The pad 54 is located between the mounting base 51 and the inner container 30.

[0067] Combination Figure 9 and Figure 11 In some embodiments, to connect the mounting base 51 and the sealing cover 52, the connecting assembly 53 includes a support member 531 and a support ring 532. The support member 531 is connected to the mounting base 51. The support ring 532 is sleeved on the support member 531 and is connected to the sealing cover 52. The mounting base 51 and the sealing cover 52 are connected through the support member 531 and the support ring 532.

[0068] Since the support ring 532 is sleeved on the support member 531, the contact area can be reduced, heat conduction can be reduced, the heat conducted from the outside to the inner container 50 can be reduced, the evaporation rate of the cryogenic liquefied gas in the inner container 50 can be reduced, and the storage time can be increased.

[0069] Combination Figure 9 In some embodiments, to achieve the connection between the support member 531 and the support ring 532 of the third limiting mechanism 50, an embedding groove is provided at the end of the support member 531 away from the inner container 30, and the support ring 532 is embedded in the embedding groove. The connecting component 53 of the third limiting mechanism 50 further includes a locking member 533. The locking member 533 is connected to the end of the support member 531 away from the mounting base 51 and abuts against the support ring 532. The support ring 532 is located between the locking member 533 and the bottom wall of the embedding groove. By locking the locking member 533, the support ring 532 is pressed against the bottom wall of the embedding groove, ensuring the stability of the connection between the support member 531 and the support ring 532 of the third limiting mechanism 50. For example, the locking member 533 can be a nut.

[0070] Combination Figure 11In some embodiments, in order to ensure the stability of the connection between the support member 531 and the support ring 532 of the fourth limiting mechanism 60, a limiting member 534 is provided at the end of the support member 531 away from the inner container 30, and the support ring 532 is located between the limiting member 534 and the inner container 30. The limiting member 534 limits the connection to prevent the support member 531 from separating from the support ring 532 and to ensure the stability of the connection.

[0071] Combination Figure 11 and Figure 12 In some embodiments, in order to ensure the stability of the inner container 30 supported by the fourth limiting mechanism 60, the support ring 532 of the fourth limiting mechanism 60 has a waist-shaped hole 5321 along the axial direction of the inner container 30, and the support member 531 passes through the waist-shaped hole 5321.

[0072] In related technologies, when a cryogenic medium (such as liquid hydrogen or liquid helium) is injected into the inner container 30, the inner container 30 will shrink towards the center due to the principle of thermal expansion and contraction. Since the support member 531 of the fourth limiting mechanism 60 passes through the oblong hole 5321, the support member 531 will slide within the oblong hole 5321 when the inner container 30 shrinks towards the center, providing space for the inner container 30 to shrink, avoiding interference from the support member 53 of the fourth limiting mechanism 60 with the shrinkage of the inner container 30, and ensuring the stability of the fourth limiting mechanism 60 in supporting the inner container 30.

[0073] Combination Figure 9 and Figure 11 In some embodiments, the support 531 has a channel through the support 431 along its axial direction, which reduces the contact area, reduces heat conduction, reduces the heat conducted from the outside to the inner container 30, reduces the evaporation rate of the cryogenic liquefied gas in the inner container 30, and increases the storage time.

[0074] Combination Figure 9 and Figure 11 In some embodiments, to further reduce heat conduction and increase thermal resistance, both the third limiting mechanism 50 and the fourth limiting mechanism 60 further include a heat insulation element 55. The heat insulation element 55 is disposed within the sealing cover 52. The connecting assembly 53 is located between the heat insulation element 55 and the inner container 30. The heat insulation element 55 provides insulation, reducing the heat conducted from the outside to the inner container 30, reducing the evaporation rate of the cryogenic liquefied gas in the inner container 30, and increasing the storage time.

[0075] Combination Figure 9 and Figure 11In some embodiments, to achieve heat insulation, the heat insulation component 55 includes a retaining ring 551 and a heat insulation portion 552. The retaining ring 551 is disposed within the sealing cover 52 and has an embedding groove. The heat insulation portion 552 is embedded in the embedding groove to achieve the installation of the heat insulation portion 552. The heat insulation portion 552 provides heat insulation, reduces heat conduction, increases thermal resistance, reduces the heat conducted from the outside to the inner container 30, reduces the evaporation rate of the cryogenic liquefied gas in the inner container 30, and increases storage time. For example, the material of the heat insulation portion 552 can be fiberglass or carbon fiber.

[0076] Combination Figure 9 and Figure 11 In some embodiments, to ensure the connection strength between the third limiting mechanism 50 and the fourth limiting mechanism 60 and the outer shell 40, both the third limiting mechanism 50 and the fourth limiting mechanism 60 further include a reinforcing member 56. The reinforcing member 56 is located outside the sealing cover and the outer shell 40, and is connected to the sealing cover 52 and the outer shell 40, thereby improving the connection strength and ensuring the stability of the connection between the third limiting mechanism 50 and the fourth limiting mechanism 60 and the outer shell 40.

[0077] Based on the same inventive concept, this application also proposes a storage and transportation container that employs a limiting device. The specific structure of the limiting device is as described in the above embodiments. Since the limiting device employs all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0078] In some embodiments, the storage and transport container includes an inner container 30 and an outer casing 40. The inner container 30 is disposed within the outer casing 40.

[0079] 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.

[0080] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0082] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0083] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A limiting device, characterized in that, The device includes a first limiting mechanism and a second limiting mechanism respectively disposed at both ends of the inner container. Both the first limiting mechanism and the second limiting mechanism are arranged radially along the inner container. The first limiting mechanism is connected to the inner container and the outer shell, and the second limiting mechanism is connected to the inner container and the outer shell. Each of the first limiting mechanism and the second limiting mechanism includes: Connecting base, for connection to the outer casing; The first connector is hinged to the connector seat; The second connector is hinged to the inner container; At least one connecting pipe assembly, one end of which is connected to the first connector and the other end of which is connected to the second connector.

2. The limiting device according to claim 1, characterized in that, Both the first connector and the second connector include: A ball-shaped cap with a first groove; A ball head seat, connected to the ball head cap, has a second groove at the end of the ball head seat facing the ball head cap, the second groove communicating with the first groove to form a cavity; The ball head body has one end connected to the at least one connecting pipe assembly, and the other end passes through the ball head seat and is rotatably disposed in the cavity; The ball cap of the first connector is connected to the connector seat, and the ball cap of the second connector is connected to the inner container.

3. The limiting device according to claim 2, characterized in that, The end of the ball head seat opposite to the ball head cap has a third groove that communicates with the second groove; In the direction from the inner container toward the outer shell, the width of the third groove of the first connector gradually decreases, while the width of the third groove of the second connector gradually increases.

4. The limiting device according to claim 2, characterized in that, Both the first connector and the second connector further include a connecting plate, and the two connecting plates are respectively connected to both ends of the connecting pipe assembly.

5. The limiting device according to any one of claims 1-4, characterized in that, The connecting pipe assembly includes: Two fasteners are respectively connected to the first connector and the second connector; A connecting tube is used to connect to the two fasteners.

6. The limiting device according to claim 5, characterized in that, The fasteners include: Tapered outer sleeve; A tapered inner sleeve is disposed inside the tapered outer sleeve and is threadedly connected to the tapered outer sleeve; the connecting pipe passes through the tapered inner sleeve. The tapered outer sleeves of the two fasteners are respectively connected to the first connector and the second connector.

7. The limiting device according to claim 6, characterized in that, A clamping element is provided between the tapered inner sleeve and the connecting pipe.

8. The limiting device according to claim 5, characterized in that, The connecting pipe is made of a low thermal conductivity material.

9. The limiting device according to claim 5, characterized in that, The connecting pipe includes multiple connecting sub-pipes arranged sequentially, with adjacent connecting sub-pipes spaced apart and connected together.

10. The limiting device according to claim 5, characterized in that, The connecting tube assembly includes two anti-detachment components; The two ends of the connecting tube are respectively inserted through the two fasteners and connected to the two anti-detachment components.

11. The limiting device according to claim 10, characterized in that, The anti-detachment component includes: A fixing part is sleeved on the outside of the connecting pipe and connected to the connecting pipe; The connecting part is sleeved outside the connecting tube and connected to the end of the fixing part away from the fastener; At least one insertion portion is provided through the fixing portion and the connecting tube.

12. The limiting device according to any one of claims 1-4, characterized in that, The connecting seat has a vacuum cavity, and the limiting device further includes: A low thermal conductivity filler is placed inside the vacuum cavity.

13. A storage and transportation container, characterized in that, It includes an inner container, a housing, and a limiting device as described in any one of claims 1-12.

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