Limiting device and storage and transport container

Abstract

The application belongs to the technical field of storage, and particularly relates to a limiting device and a storage and transportation container. The limiting device comprises a connecting piece connected with an inner container and arranged at least partially in the inner container, the connecting piece being provided with a first cavity; a fixing seat arranged in an outer shell; a compression-resistant limiting assembly arranged in the first cavity and fixedly connected with the fixing seat; and a flexible limiting assembly having one end connected with the compression-resistant limiting assembly and the other end arranged in the fixing seat through the compression-resistant limiting assembly. The limiting device and the storage and transportation container can ensure the stability of the inner container in 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 reverse inertia generated by acceleration and deceleration can cause the inner container to move inside the outer shell, resulting in instability of the inner container. In severe cases, the inner container and the medium stored inside it may shift to one side, and may even crack the weld seam, leading to leakage of the liquid 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 connector connected to an inner container and at least partially disposed within the inner container, the connector having a first chamber; a fixing seat disposed within an outer shell; a pressure-resistant limiting component disposed within the first chamber and fixedly connected to the fixing seat; and a flexible limiting component, one end of which is connected to the pressure-resistant limiting component, and the other end of which passes through the pressure-resistant limiting component and is disposed within the fixing seat.

[0006] In some embodiments, the pressure-resistant limiting assembly includes: a plurality of connecting pipes and a plurality of connecting plates; the plurality of connecting pipes are all disposed in the first cavity, and are sequentially sleeved along the radial direction of the connector, with adjacent connecting pipes spaced apart, and adjacent connecting pipes connected by the connecting plates; wherein, the outermost connecting pipe among the plurality of connecting pipes is connected to the connector, and the innermost connecting pipe among the plurality of connecting pipes is connected to the fixing seat.

[0007] In some embodiments, the plurality of connecting tubes include a first connecting tube, a second connecting tube, and a third connecting tube sequentially sleeved along the radial direction of the connector, and the plurality of connecting plates include: a first connecting plate disposed on the first connecting tube; a first connecting ring disposed on the end of the first connecting plate facing the fixing seat, the first connecting ring having a first embedding groove; a second connecting plate disposed on the third connecting tube; and a second connecting ring disposed on the end of the second connecting plate away from the fixing seat, the second connecting ring having a second embedding groove; wherein, the two ends of the second connecting tube are respectively embedded in the first embedding groove and the second embedding groove.

[0008] In some embodiments, the plurality of connecting pipes further includes a fourth connecting pipe disposed within the third connecting pipe; wherein the plurality of connecting plates further includes a third connecting plate, the third connecting plate being connected to the fourth connecting pipe and the third connecting pipe.

[0009] In some implementations, the first connecting pipe and the third connecting pipe are made of low-temperature resistant materials, and the second connecting pipe is made of low thermal conductivity materials.

[0010] In some embodiments, the connector has a connecting portion disposed within the first cavity, the connecting portion having a mounting groove; the end of the outermost connecting pipe among the plurality of connecting pipes is embedded in the mounting groove and fixedly connected to the groove wall of the mounting groove.

[0011] In some implementations, the flexible limiting component includes: a first limiting member disposed in the first cavity and connected to the pressure-resistant limiting component; a second limiting member disposed in the fixed base; and a flexible pull rope, one end of which is connected to the first limiting member, and the other end of which passes through the pressure-resistant limiting component and is connected to the second limiting member.

[0012] In some implementations, the first limiting member includes: a first anchor, one end of which is disposed in the first cavity and the other end of which passes through the pressure-resistant limiting component, the first anchor being connected to the flexible pull rope; and a first locking member, disposed in the first cavity and movably connected to the first anchor, the first locking member abutting against the end of the pressure-resistant limiting component away from the fixed seat.

[0013] In some embodiments, the fixed base has a second chamber, and the second limiting member includes: a second anchor, one end of which is disposed in the second chamber and the other end of which passes through the pressure-resistant limiting component, the second anchor being connected to the flexible pull rope; and a second locking member, which is disposed in the second chamber and movably connected to the second anchor, the second locking member abutting against the end of the pressure-resistant limiting component away from the first limiting member.

[0014] In some implementations, the flexible draw rope is made of a high-strength, low-thermal-conductivity material.

[0015] In some implementations, the flexible pull cord is connected to the first limiting member by a first adhesive, and the flexible pull cord is connected to the second limiting member by a second adhesive.

[0016] 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.

[0017] In some embodiments, the connector is located at the end of the inner container, and the fixing seat is located at the end of the outer casing.

[0018] The beneficial effects of the present invention include at least the following: Since the connector is connected to and at least partially located within the inner container, and has a first chamber, the inner container supports the connector and can also accommodate part of it, thus reducing the space occupied by the connector between the inner container and the outer shell. Since the fixing seat is located within the outer shell, it can be supported by the outer shell. Because the pressure-resistant limiting component is located within the first chamber and fixedly connected to the fixing seat, when the vehicle carrying the outer shell and inner container accelerates, under the action of inertial force, the inner container will move in the opposite direction to the direction of the vehicle's movement. The pressure-resistant limiting component, under the action of the connector and the fixed seat, supports the inner container and restricts the inner container's backward displacement, which is opposite to the inertial force, during the vehicle's acceleration. Since one end of the flexible limiting component is connected to the pressure-resistant limiting component and the other end passes through the pressure-resistant limiting component and is located in the fixed seat, during the vehicle's deceleration, under the action of inertial force, the inner container will move in the same direction as the vehicle's movement. At this time, under the action of the connector and the fixed seat, the flexible limiting component pulls the inner container and restricts the inner container's forward displacement, which is opposite to the inertial force, during the vehicle's deceleration.

[0019] By combining the flexible limiting component and the pressure-resistant limiting component, the inertial forces in the two longitudinal directions of the inner container are mutually constrained, completely restricting the inertial displacement of the inner container during acceleration and deceleration. This can completely fix the position of the inner container inside the outer shell and ensure the stability of the inner container inside the outer shell. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the installation of the limiting device in some embodiments; Figure 2 for Figure 1 Schematic diagram of the middle limit device; Figure 3 for Figure 2 Schematic diagram of the compressive limiting component of the middle limiting device; Figure 4 for Figure 2 A schematic diagram of the connecting parts of the middle limiting device; Figure 5 for Figure 2 A schematic diagram of the flexible limiting component of the middle limiting device; Figure 6 for Figure 2 Schematic diagram of the fixing seat of the middle limit device; Figure 7 This is a schematic diagram of the installation of the first and second suspension support assemblies according to some embodiments; Figure 8 for Figure 7 A schematic diagram of the arrangement of the first suspension cable support assembly of the middle limiting device; Figure 9 for Figure 7 A schematic diagram of the arrangement of the second suspension cable support assembly of the middle limiting device.

[0022] In the attached image: Connector 10, first chamber 11, pipe cap 12, connecting part 13, mounting groove 14, opening 15; Fixing base 20, second chamber 21, through hole 22; Compression limiting component 30, connecting pipe 31, first connecting pipe 311, second connecting pipe 312, third connecting pipe 313, fourth connecting pipe 314, connecting plate 32, first connecting plate 321, first connecting ring 322, second connecting plate 323, second connecting ring 324, third connecting plate 325, first embedding groove 326, second embedding groove 327; Flexible limiting component 40, first limiting member 41, first anchor 411, first locking member 412, second limiting member 42, second anchor 421, second locking member 422, flexible pull rope 43, first adhesive 44, second adhesive 45. Content container 50, first cover 51; Outer shell 60, second end cap 61; First suspension cable support assembly 70, connecting seat 71, vacuum chamber 711, flexible traction belt 72, limiting assembly 73, third anchor 731, third locking member 732; Second suspension support assembly 80; First fixing ring 90; Second fixing ring 100; Connecting ring 110. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] In related technologies, the inner container is typically housed within the outer shell using slings or rods for support. Eight sets of slings or rods are symmetrically arranged around the circumference of the inner container, while a fully 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 shell. During transportation, the slings or rods can completely restrain and counteract the vibration displacement of the inner container in the up, down, left, and right directions. However, due to spatial constraints on the axial position of the inner container, during the transportation of cryogenic vacuum insulated containers, the reverse inertial displacement generated by acceleration and deceleration cannot be restrained and counteracted by the symmetrical slings or rods, leading to instability of the inner container.

[0028] 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.

[0029] The design concept of this application is to achieve mutual restraint of the inertial forces in two directions in the longitudinal direction of the inner container through the combination of flexible limiting components and pressure-resistant limiting components, thereby completely restraining the inertial displacement of the inner container during acceleration and deceleration, and completely fixing the position of the inner container inside the outer shell, thus ensuring the stability of the inner container inside the outer shell.

[0030] 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.

[0031] Combination Figure 1 and Figure 2 The limiting device according to this application embodiment includes: a connector 10, a fixing base 20, a pressure-resistant limiting component 30, and a flexible limiting component 40. The connector 10 is connected to the inner container 50 and is at least partially disposed within the inner container 50, and the connector 10 has a first chamber 11. The fixing base 20 is disposed within the outer shell 60. The pressure-resistant limiting component 30 is disposed within the first chamber 11 and is fixedly connected to the fixing base 20. One end of the flexible limiting component 40 is connected to the pressure-resistant limiting component 30, and the other end passes through the pressure-resistant limiting component 30 and is disposed within the fixing base 20.

[0032] Since the connector 10 is connected to the inner container 50 and is at least partially disposed within the inner container 50, and the connector 10 has a first chamber 11, the inner container 50 supports the connector 10 and can accommodate part of the connector 10, thereby reducing the space occupied by the connector 10 between the inner container 50 and the outer casing 60. Since the fixing seat 20 is disposed within the outer casing 60, the outer casing 60 can support the fixing seat 20. Since the pressure-resistant limiting component 30 is disposed within the first chamber 11 and is fixedly connected to the fixing seat 20, when the vehicle carrying the outer casing 60 and the inner container 50 accelerates, during the acceleration process, under the action of inertial force, the inner container 50 will move in the opposite direction to the direction of movement of the vehicle. During this action, the pressure-resistant limiting component 30, under the action of the connecting piece 10 and the fixed base 20, supports the inner container 50, limiting the displacement of the inner container 50 "rearward" and opposite to the inertial force during the vehicle's acceleration. Since one end of the flexible limiting component 40 is connected to the pressure-resistant limiting component 30 and the other end passes through the pressure-resistant limiting component 30 and is located in the fixed base 20, during the vehicle's deceleration, under the action of the inertial force, the inner container 50 will move in the same direction as the vehicle's movement. At this time, under the action of the connecting piece 10 and the fixed base 20, the flexible limiting component 40 pulls the inner container 50, limiting the displacement of the inner container 50 "forward" and opposite to the inertial force during the vehicle's deceleration.

[0033] By combining the flexible limiting component 40 and the pressure-resistant limiting component 30, the inertial forces in the two longitudinal directions of the inner container 50 are mutually constrained, completely restricting the inertial displacement of the inner container 50 during acceleration and deceleration. This can completely fix the position of the inner container 50 within the outer shell 60, ensuring the stability of the inner container 50 within the outer shell 60.

[0034] In some embodiments, the end of the connector 10 away from the base 20 has a cap 12 to close the first chamber 11. The end of the connector 10 facing the base 20 has an opening 15 communicating with the first chamber 11.

[0035] Combination Figure 2 and Figure 3 In some embodiments, to limit the rearward displacement of the inner container 50 during vehicle acceleration, which is opposite to the inertial force, the pressure-resistant limiting assembly 30 includes multiple connecting pipes 31 and multiple connecting plates 32. The multiple connecting pipes 31 are all disposed within the first chamber 11, and are sequentially sleeved along the radial direction of the connector 10. Adjacent connecting pipes 31 are spaced apart and connected by connecting plates 32. The outermost connecting pipe of the multiple connecting pipes 31 is connected to the connector 10, and the innermost connecting pipe of the multiple connecting pipes 31 is connected to the fixing base 20.

[0036] During the acceleration of the vehicle, under the action of inertial force, the inner container 50 will move in the opposite direction to the direction of vehicle movement. At this time, through the action of multiple connecting pipes 32 and multiple connecting plates 32, the inner container 50 is supported by the connecting member 10 and the fixing seat 20, thus limiting the displacement of the inner container 50 "backward" in the process of vehicle acceleration, which is opposite to the inertial force.

[0037] In related technologies, when an all-metal welded connection structure is used to connect the inner container and the outer shell, the large heat conduction of the all-metal welded connection structure will significantly increase the heat conducted from the outside to the inner container, accelerate the evaporation rate of the cryogenic liquefied gas in the inner container, and shorten the storage time.

[0038] Since multiple connecting pipes 31 are sequentially sleeved along the radial direction of the connector 10, with adjacent connecting pipes 31 spaced apart and connected by a connecting plate 32, the multiple connecting pipes 31 form a tortuous thermal bridge, which lengthens the thermal bridge, increases its length, increases thermal resistance, reduces heat conduction, reduces the heat conducted from the outside to the inner container 50, reduces the evaporation rate of cryogenic liquefied gas in the inner container 50, and increases storage time. This allows the storage and transportation container to be used as a tank, tank truck, or fixed storage tank for cryogenic liquids such as liquid hydrogen and liquid helium.

[0039] The pressure-resistant limiting component 30 not only achieves ultra-low thermal conductivity, but also ensures a reliable connection between the inner container 50 and the outer shell 60, realizing two functions in one piece and reducing costs.

[0040] Combination Figure 3 In some embodiments, to relieve stress, multiple connecting pipes 31 include a first connecting pipe 311, a second connecting pipe 312, and a third connecting pipe 313 sequentially sleeved along the radial direction of the connector 10. Multiple connecting plates 32 include a first connecting plate 321, a first connecting ring 322, a second connecting plate 323, and a second connecting ring 324. The first connecting plate 321 is disposed on the first connecting pipe 311. The first connecting ring 322 is disposed on the end of the first connecting plate 321 facing the fixing seat 20, and the first connecting ring 322 has a first embedding groove 326. The second connecting plate 323 is disposed on the third connecting pipe 313. The second connecting ring 324 is disposed on the end of the second connecting plate 323 away from the fixing seat 20, and the second connecting ring 324 has a second embedding groove 327. For example, the first connecting plate 321 is disposed on the end of the first connecting pipe 311 away from the fixing seat 20, and the second connecting plate 323 is disposed on the end of the third connecting pipe 313 close to the fixing seat 20. The two ends of the second connecting pipe 312 are respectively embedded in the first embedding groove 326 and the second embedding groove 327.

[0041] During vehicle acceleration, under the influence of inertial force, the inner container 50 tends to move in the opposite direction to the vehicle's movement. At this time, the first connecting plate 321, through the first connecting ring 322, and the second connecting plate 323, through the second connecting ring 324, can simultaneously apply compressive stress to the second connecting pipe 312. During vehicle deceleration, under the influence of inertial force, the inner container 50 tends to move in the same direction as the vehicle's movement. At this time, although the second connecting pipe 312 tends to disengage from the first embedding groove 326 and the second embedding groove 327, this disengagement cannot occur due to the restriction of the flexible limiting device 40. This prevents the second connecting pipe 312 from locking into the first connecting ring 322 and the second connecting ring 324, thus releasing stress and ensuring service life.

[0042] In some embodiments, when the first connecting pipe 311 is the outermost connecting pipe among a plurality of connecting pipes 31, the first connecting pipe 311 is disposed in the first chamber 11 and partially passes through the opening of the connector 10, and the first connecting pipe 311 is connected to the first connector 10.

[0043] Combination Figure 3 In some embodiments, to extend the length of the thermal bridge, the plurality of connecting pipes 31 further includes a fourth connecting pipe 314. The fourth connecting pipe 314 is disposed within the third connecting pipe 313. The plurality of connecting plates 32 further includes a third connecting plate 325, which is connected to the fourth connecting pipe 314 and the third connecting pipe 313.

[0044] In some embodiments, when the fourth connecting pipe 314 is the innermost connecting pipe among a plurality of connecting pipes 31, the fourth connecting pipe 314 passes through the third connecting pipe 313 and connects to the fixing base 20. For example, the fixing base 20 has a through hole 22, and the fourth connecting pipe 314 is disposed in the through hole 22.

[0045] In some embodiments, the first connecting pipe 311 and the third connecting pipe 313 are made of low-temperature resistant materials to ensure service life. For example, the first connecting pipe 311 and the third connecting pipe 313 can be made of stainless steel.

[0046] In some embodiments, the second connecting pipe 312 is made of a low thermal conductivity material, which can reduce heat transfer, reduce the heat conducted from the outside to the inner container 50, reduce the evaporation rate of the cryogenic liquefied gas in the inner container 50, and increase the storage time. For example, the second connecting pipe 312 can be made of fiberglass.

[0047] By limiting the reverse inertial displacement of the inner container 50 during acceleration and deceleration respectively by the pressure-resistant limiting component 30 and the flexible limiting component 40, the all-welded structure can be eliminated. A contact-type fiberglass connecting pipe with a low thermal conductivity, namely the second connecting pipe 312, can be installed in the pressure-resistant limiting component 30, which can effectively reduce heat transfer and improve vacuum insulation performance.

[0048] Combination Figure 2 , Figure 3 and Figure 4 In some embodiments, to facilitate the connection between the connecting pipe 31 and the connector 11, the connector 10 has a connecting portion 13, which is disposed in the first chamber 11 and has a mounting groove 14. The end of the outermost connecting pipe among the plurality of connecting pipes 30 is embedded in the mounting groove 14 and is fixedly connected to the groove wall of the mounting groove 14.

[0049] The connecting part 13 reduces the distance between the connecting pipe 31 and the inner wall of the first chamber 11, so as to facilitate the connection between the connecting pipe 31 and the connector 11. When installing the connecting pipe 31, the groove wall of the mounting groove 14 near the fixing seat 20 can limit the connecting pipe 31 to facilitate the installation of the connecting pipe 31.

[0050] Combination Figure 2 and Figure 5 In some embodiments, to limit the forward displacement of the inner container 50 during vehicle deceleration, which is opposite to the inertial force, the flexible limiting assembly 40 includes a first limiting member 41, a second limiting member 42, and a flexible pull rope 43. The first limiting member 41 is disposed within the first chamber 11 and connected to the pressure-resistant limiting assembly 30. The second limiting member 42 is disposed within the fixed base 20. One end of the flexible pull rope 43 is connected to the first limiting member 41, and the other end passes through the pressure-resistant limiting assembly 30 and connects to the second limiting member 42.

[0051] During the vehicle's deceleration, under the influence of inertial force, the inner container 50 will move in the same direction as the vehicle's movement. At this time, the flexible pull rope 43, under the action of the first limiting member 41 and the second limiting member, transmits force to the connecting member 10 and the fixing seat 20 to pull the inner container 50, limiting the inner container 50's forward displacement against the inertial force during the vehicle's deceleration. The flexible limiting component 40 not only achieves ultra-low thermal conductivity, but also ensures a reliable connection between the inner container 50 and the outer shell 60, realizing two functions in one piece and reducing costs.

[0052] Combination Figure 2 and Figure 5In some embodiments, to secure the flexible draw rope 43, the first limiting member 41 includes a first anchor 411 and a first locking member 412. One end of the first anchor 411 is disposed within the first chamber 11, and the other end passes through the pressure-resistant limiting assembly 30. The first anchor 411 is connected to the flexible draw rope 43. The first locking member 412 is disposed within the first chamber 11 and is movably connected to the first anchor 411. The first locking member 412 abuts against the end of the pressure-resistant limiting assembly 30 away from the fixed seat 20. For example, the first locking member 412 abuts against the first connecting plate 321 of the pressure-resistant limiting assembly 30. For example, the first anchor 411 has threads, and the first locking member 412 can be a nut.

[0053] One end of the first anchor 411 is disposed in the first chamber 11, and the other end is inserted through the pressure-resistant limiting component 30. The flexible pull rope 43 is connected to the first anchor 411. The first locking member 412 is operated in the first chamber 11, causing the first locking member 412 to move on the first anchor 411 until the first locking member 412 abuts against the end of the pressure-resistant limiting component 30 away from the fixed seat 20, thereby securing one end of the flexible pull rope 43. For example, the first locking member 412 abuts against the first connecting plate 321 of the pressure-resistant limiting component 30.

[0054] In some embodiments, the first anchor 411 is inserted through the first connecting plate 321 and disposed inside the first connecting pipe 411, and the flexible pull rope 43 is inserted through the fourth connecting pipe 314 and connected to the second limiting member 42.

[0055] Combination Figure 2 , Figure 5 and Figure 6 In some embodiments, to secure the flexible draw rope 43, the fixing base 20 has a second chamber 21, and the second limiting member 42 includes a second anchor 421 and a second locking member 422. One end of the second anchor 421 is located in the second chamber 21, and the other end passes through the pressure-resistant limiting component 30. The second anchor 421 is connected to the flexible draw rope 43. The second locking member 422 is located in the second chamber 21 and is movably connected to the second anchor 421. The second locking member 422 abuts against the end of the pressure-resistant limiting component 30 away from the first limiting member 41. For example, the second anchor 421 has threads, and the second locking member 422 can be a nut.

[0056] One end of the second anchor 421 is disposed in the second chamber 21, and the other end is inserted through the pressure-resistant limiting component 30. The flexible pull rope 43 is connected to the second anchor 421. The second locking member 422 is operated in the second chamber 21, causing the second locking member 422 to move on the second anchor 421 until the second locking member 422 abuts against the end of the pressure-resistant limiting component 30 away from the first limiting member 41, thereby securing the other end of the flexible pull rope 43. For example, the first locking member 412 abuts against the fourth connecting tube 314 of the pressure-resistant limiting component 30.

[0057] In some embodiments, the second anchor 421 is partially disposed within the fourth connecting pipe 314 of the pressure-resistant limiting assembly 30.

[0058] In some embodiments, the flexible drawstring 43 is made of a high-strength, low-thermal-conductivity material, which can reduce heat conduction, decrease the heat conducted from the outside to the inner container 50, reduce the evaporation rate of cryogenic liquefied gas in the inner container 50, and increase storage time. For example, the flexible drawstring 43 can be a high-strength, low-thermal-conductivity drawstring such as carbon fiber or Kevlar, or it can be a flexible fiber.

[0059] Combination Figure 5 In some embodiments, the flexible draw rope 43 is connected to the first limiting member 41 via a first adhesive 44. The first adhesive 44 not only connects the flexible draw rope 43 to the first limiting member 41, but also reduces heat conduction, increases thermal resistance, reduces heat conducted from the outside to the inner container 50, reduces the evaporation rate of the cryogenic liquefied gas in the inner container 50, and increases storage time. For example, the first adhesive 44 is filled between the first anchor 411 and the flexible draw rope 43.

[0060] Combination Figure 5 In some embodiments, the flexible draw rope 43 is connected to the second limiting member 42 via a second adhesive 45. The second adhesive 45 not only connects the flexible draw rope 43 to the second limiting member 42, but also reduces heat conduction, increases thermal resistance, reduces heat conducted from the outside to the inner container 50, reduces the evaporation rate of the cryogenic liquefied gas in the inner container 50, and increases storage time. For example, the second adhesive 45 is filled between the second anchor 421 and the flexible draw rope 43.

[0061] In some embodiments, the connector 10 is disposed at the end of the inner container 50, and the fixing seat 20 is disposed at the end of the outer casing 60.

[0062] In some embodiments, the inner container 50 has a first end cap 51, and the connector 10 is disposed on the first end cap 51. The outer casing 60 has a second end cap 61, and the fixing seat 20 is disposed on the second end cap 612. The first end cap 51 and the second end cap 61 are used to connect the connector 10 and the fixing seat 20, so that the combination between the flexible limiting component 40 and the pressure-resistant limiting component 30 can mutually restrain the inertial forces in two directions in the longitudinal direction of the inner container 50, completely restrain the inertial displacement of the inner container 50 during acceleration and deceleration, and completely fix the position of the inner container 50 within the outer casing 60, thus ensuring the stability of the inner container 50 within the outer casing 60.

[0063] Combination Figure 7 , Figure 8 and Figure 9 The limiting device in this embodiment includes a first suspension support assembly 70 and a second suspension support assembly 80. At least three first suspension support assemblies 70 are arranged radially along the inner container 50 and connected to the inner container 50 and the outer casing 60, and are evenly spaced at equal angles. At least three second suspension support assemblies 80 are arranged radially along the inner container 50 and connected to the inner container 50 and the outer casing 60, and are evenly spaced at equal angles. The first suspension support assemblies 70 and the second suspension support assemblies 80 are located at opposite ends of the inner container 50.

[0064] The number of first suspension support components 70 can be three or more. For example, the number of first suspension support components 70 can be four.

[0065] The number of second suspension support assemblies 80 can be three or more. For example, the number of second suspension support assemblies 80 can be four.

[0066] Since at least three first suspension support components 70 are arranged radially along the inner container 50 and connected to the inner container 50 and the outer shell 60, and at least three second suspension support components 80 are arranged radially along the inner container 50 and connected to the inner container 50 and the outer shell 60, and at least three first suspension support components 70 are arranged radially at equal angles, and the first suspension support components 70 and the second suspension support components 80 are respectively located at both ends of the inner container 50, a radial composite constraint system is formed by the symmetrical distribution of at least three first suspension support components 70 and at least three second suspension support components 80 at both ends of the inner container 50, so as to form a three-dimensional spatial limiting network, which conforms to the principle of mechanical symmetry, can effectively offset the impact load during transportation, effectively limit the movement of the inner container 50 in the radial direction of the outer shell 60, fix the position of the inner container 50 in the outer shell 60, and ensure the stability of the inner container 50 in the outer shell 60.

[0067] Since at least three first suspension support components 70 and at least three second suspension support components 80 are evenly spaced at equal angles, multiple equally spaced support points can be formed to conform to the principle of geometric symmetry, creating a stable "regular polygon" structure. This allows the support force to be evenly distributed along the surface of the inner container 50, avoiding stress gradients caused by uneven spacing between support points, preventing structural fatigue caused by localized stress concentration, significantly extending the structural fatigue life, and improving service life. Furthermore, the tension direction of the first suspension support components 70 and the second suspension support components 80 is consistent with the normal direction of the contact surface between the inner container 50 and the outer shell 60, forming a direct stress transmission path. This reduces the damage of shear stress to the connection points, resulting in a more uniform stress distribution, preventing the generation of localized fatigue cracks, and further improving service life.

[0068] Moreover, at least three first suspension support assemblies 70 and at least three second suspension support assemblies 80 can make full use of the natural space between the inner container 50 and the outer shell 60 without affecting the volume of the inner container 50, thus ensuring the transport capacity of the inner container 50.

[0069] Combination Figure 8 and Figure 9 In some embodiments, to connect the first suspension support assembly 70 and the second suspension support assembly 80 to the inner container 50, the limiting device further includes: a first fixing ring 90, a second fixing ring 100, and a connecting ring 110. The first fixing ring 90 and the second fixing ring 100 are respectively disposed at both ends of the inner container 50. The connecting ring 110 is slidably disposed within the first fixing ring 90. The first suspension support assembly 70 is connected to the connecting ring 110, and the second suspension support assembly 80 is connected to the second fixing ring 100.

[0070] In related technologies, when a cryogenic medium (such as liquid hydrogen or liquid helium) is injected into the inner container 50, the inner container 50 will shrink towards the center due to the principle of thermal expansion and contraction. Since the connecting ring 110 is slidably disposed within the first fixed ring 90, when the inner container 50 shrinks towards the center, the connecting ring 110 will slide within the first fixed ring 90 to provide space for the inner container 50 to shrink, thereby preventing the first suspension support assembly 70 from interfering with the shrinkage of the inner container 50 and ensuring the stability of the inner container 50 supported by the first suspension support assembly 70.

[0071] Combination Figure 8 and Figure 9In some embodiments, to enable the first suspension support assembly 70 and the second suspension support assembly 80 to support the inner container 50 within the outer shell 60, both the first suspension support assembly 70 and the second suspension support assembly 80 include a connecting seat 71 and a flexible pull strap 72. The connecting seat 71 is connected to the outer shell 60. The flexible pull strap 72 is connected to the connecting seat 71. Specifically, the flexible pull strap 72 of the first suspension support assembly 70 passes through the first fixing ring 90 and is connected to the connecting ring 110, and the flexible pull strap 72 of the second suspension support assembly 80 is connected to the second fixing ring 100.

[0072] In related technologies, cryogenic media (such as liquid hydrogen and liquid helium) are highly susceptible to vaporization during storage and transportation due to their extremely low density, extremely low boiling point, and extremely low latent heat of vaporization (liquid helium). This leads to a rapid increase in pressure, thus placing extremely high demands on the insulation and cold preservation of storage and transportation containers. Therefore, liquid hydrogen and liquid helium storage and transportation containers are all double-layered vacuum-insulated tank structures. The inner container 50 and the outer shell 60 are fitted together to form a non-contact vacuum jacket cavity, which blocks convective heat transfer. At the same time, the outer surface of the inner container 50 is covered with multiple layers of anti-radiation screens to reduce radiative heat transfer. However, since the inner container 50 inevitably needs to contact the outer shell 60 through the support structure, contact heat transfer is inevitable. Therefore, the support structure of the inner container 50 is one of the main sources of heat leakage.

[0073] In some embodiments, in order to improve contact thermal resistance, reduce structural heat transfer, and improve thermal insulation and cold preservation performance, both the first suspension support assembly 70 and the second suspension support assembly 80 adopt flexible tension straps 72. The flexible tension straps 72 can reduce heat conduction, increase thermal resistance, reduce the heat conducted from the outside to the inner container 50, reduce the evaporation rate of ultra-low temperature cryogenic liquefied gas in the inner container 50, and increase storage time.

[0074] The flexible pull strap 72 not only achieves ultra-low thermal conductivity, but also ensures a reliable connection between the inner container 50 and the outer shell 60, realizing two uses in one piece and reducing costs.

[0075] In some embodiments, the flexible drawstring 72 is made of a high-strength, low-thermal-conductivity material, which can further reduce heat conduction, increase thermal resistance, reduce the heat conducted from the outside to the inner container 50, reduce the evaporation rate of cryogenic liquefied gas in the inner container 50, and increase storage time. For example, the flexible drawstring 72 can be a high-strength, low-thermal-conductivity drawstring such as carbon fiber or Kevlar, or it can be a flexible fiber.

[0076] In some embodiments, the flexible pull strap 72 is always kept taut in order to withstand tensile loads and ensure the stability of the inner container 50 within the outer shell 60.

[0077] Combination Figure 8In some embodiments, in order to avoid the flexible pull strap 72 interfering with the sliding of the connecting ring 110 within the first fixed ring 90, the first fixed ring 90 is provided with a cavity to accommodate the connecting ring 110. Along the axial direction of the inner container 50, the first fixed ring 90 is provided with a groove communicating with the cavity. The flexible pull strap 72 of the first suspension support assembly 70 is slidably disposed in the groove and passes through the groove to connect with the connecting ring 110.

[0078] When a cryogenic medium (such as liquid hydrogen or liquid helium) is injected into the inner container 50, the inner container 50 will shrink towards the center. At this time, the connecting ring 110 will slide within the first fixed ring 90 to provide space for the inner container 50 to shrink. Meanwhile, the flexible strap 72 of the first suspension support assembly 70 can slide within the groove to avoid interfering with the sliding of the connecting ring 110 within the first fixed ring 90, thus ensuring smooth operation of the connecting ring 110 and preventing the first suspension support assembly 70 from interfering with the shrinkage of the inner container 50, thereby ensuring the stability of the inner container 50 supported by the first suspension support assembly 70.

[0079] Combination Figure 8 and Figure 9 In some embodiments, to connect the first suspension support assembly 70 to the connecting ring 110 and the second suspension support assembly 80 to the second fixing ring 100, the first suspension support assembly 70 and the second suspension support assembly 80 further include a limiting component 73. The limiting component 73 is connected to the flexible tension strap 72. Specifically, the limiting component 73 of the first suspension support assembly 70 is partially located within the connecting ring 110 and abuts against the inner wall of the connecting ring 110, thus limiting the first suspension support assembly 70 and preventing it from detaching from the connecting ring 110, ensuring the stability of the connection between the flexible tension strap 72 of the first suspension support assembly 70 and the connecting ring 110. The limiting component 73 of the second suspension support component 80 is located inside the second fixing ring 100 and abuts against the inner wall of the second fixing ring 100 to achieve limiting and prevent the second suspension support component 80 from falling off the second fixing ring 100, thus ensuring the stability of the connection between the flexible strap 72 of the second suspension support component 80 and the second fixing ring 100.

[0080] Combination Figure 8 and Figure 9In some embodiments, to achieve limiting, the limiting component 73 includes a third anchor 731 and a third locking member 732. The third anchor 731 is connected to the flexible tension band 72. The third locking member 732 is movably connected to the third anchor 731. Specifically, the third anchor 731 of the first suspension support component 70 passes through the first fixing ring 90 and the connecting ring 110, and is located within the connecting ring 110; the third locking member 732 of the first suspension support component 70 is located within the connecting ring 110 and abuts against the inner wall of the connecting ring 110; the third anchor 731 of the second suspension support component 80 passes through the second fixing ring 100 and is located within the second fixing ring 100; the fixing ring of the second suspension support component 80 abuts against the inner wall of the second fixing ring 100. For example, the third anchor 731 is threaded, and the third locking member 732 can be a nut.

[0081] The third anchor 731 of the first suspension support assembly 70 passes through the first fixing ring 90 and the connecting ring 110 and is located inside the connecting ring 110. It connects the flexible tension band 72 of the first suspension support assembly 70 to the third anchor 731. The third locking member 732 of the first suspension support assembly 70 is operated inside the connecting ring 110, so that the third locking member 732 moves on the third anchor 731 until the third locking member 732 abuts against the inner wall of the connecting ring 110, thereby achieving the fastening of the flexible tension band 72 of the first suspension support assembly 70.

[0082] The third anchor 731 of the second suspension support assembly 80 is inserted into the second fixing ring 100 and located inside the second fixing ring 100. The flexible tension band 72 of the second suspension support assembly 80 is connected to the third anchor 731. The third locking member 732 of the second suspension support assembly 80 is operated inside the second fixing ring 100, so that the third locking member 732 moves on the third anchor 731 until the third locking member 732 abuts against the inner wall of the second fixing ring 100, thereby achieving the fastening of the flexible tension band 72 of the second suspension support assembly 80.

[0083] In some embodiments, the flexible pull strap 72 is connected to the third anchor 731 by an adhesive. This adhesive not only connects the flexible pull strap 72 to the third anchor 731, but also reduces heat conduction, increases thermal resistance, reduces heat conducted from the outside to the inner container 50, reduces the evaporation rate of the cryogenic liquefied gas in the inner container 50, and increases storage time. Exemplarily, the adhesive is filled between the third anchor 731 and the flexible pull strap 72.

[0084] Combination Figure 8 and Figure 9In some embodiments, in order to improve thermal resistance and reduce heat conduction, the connector 71 has a vacuum cavity 711. The vacuum cavity 711 provides insulation, which reduces the heat conducted from the outside to the inner container 50, reduces the evaporation rate of the cryogenic liquefied gas in the inner container 50, and increases the storage time.

[0085] 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 711 to reflect heat and prevent radiation, reducing the heat conducted from the outside to the inner container 50, reducing the evaporation rate of the cryogenic liquefied gas in the inner container 50, and increasing storage time. Exemplarily, the low thermal conductivity filler can be glass fiber or aluminum foil, etc.

[0086] Combination Figure 8 In some embodiments, to prevent the connecting ring 110 from rotating within the first fixed ring 90, both the first fixed ring 90 and the connecting ring 110 are non-circular, forming a mechanical interlock through corner contact. This ensures that the connecting ring 110 can only slide within the first fixed ring 90 along the axial direction of the inner container 50, guaranteeing the stability of the connecting ring 110's movement within the first fixed ring 90 and ensuring the stability of the first suspension support assembly 70 in supporting the inner container 50. For example, the connecting ring 110 can be square or polygonal in shape.

[0087] In some embodiments, in order to ensure smooth movement of the connecting ring 110 within the first fixing ring 90, when the connecting ring 110 is square in shape, the corners of the connecting ring 110 are chamfered.

[0088] Combination Figure 1 and Figure 7 In some embodiments, to further ensure the stability of the inner container 50 within the outer casing 60, the limiting device further includes a longitudinal limiting member. The longitudinal limiting member is arranged along the axial direction of the inner container 50 and is connected to both the inner container 50 and the outer casing 60. The longitudinal limiting member and the second suspension support assembly 80 are located at the same end of the inner container 50.

[0089] When the vehicle carrying the outer shell 60 and the inner container 50 accelerates, during the acceleration or deceleration process, under the action of inertial force, the inner container 50 will move in the opposite direction to the direction of vehicle movement. At this time, under the action of the connecting member 10 and the fixing seat 20, the longitudinal limiting member supports or pulls the inner container 50, restricting the displacement of the inner container 50 opposite to the inertial force generated during the acceleration of the vehicle. This achieves mutual restraint of the inertial forces in the two longitudinal directions of the inner container 50, constrains the inertial displacement of the inner container 50 during acceleration and deceleration, fixes the position of the inner container 50 inside the outer shell 60, and ensures the stability of the inner container 50 inside the outer shell 60.

[0090] The longitudinal limiting component can make full use of the natural space between the inner container 50 and the outer shell 60 without affecting the volume of the inner container 50, thus ensuring the transport capacity of the inner container 50.

[0091] The longitudinal limiting component includes a connector 10, a fixing seat 20, a pressure-resistant limiting component 30, and a flexible limiting component 40.

[0092] In some embodiments, the longitudinal limiting member, the first suspension support assembly 70, and the second suspension support assembly 80 work together to simultaneously limit the axial and radial directions of the inner container 50, fixing its position within the outer casing 60 and ensuring its stability. Furthermore, the inner container 50 is suspended in the center of the outer casing 60, preventing direct contact and reducing heat transfer between them. This avoids vaporization of the cryogenic medium due to temperature increases in the inner container 50, extends the non-destructive storage time of the cryogenic medium during storage and transportation, and improves transportation safety and economy.

[0093] 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.

[0094] In some embodiments, the storage and transport container includes an inner container 50 and an outer casing 60. The inner container 50 is disposed within the outer casing 60, the connector 10 of the limiting device is connected to the inner container 50, and the fixing seat 20 of the limiting device is connected to the outer casing 60.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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, include: A connector, connected to the inner container and at least partially disposed within the inner container, the connector having a first chamber; The mounting base is located inside the outer casing; A pressure-resistant limiting component is disposed in the first cavity and is fixedly connected to the fixed seat; A flexible limiting component has one end connected to the pressure-resistant limiting component and the other end inserted through the pressure-resistant limiting component and located inside the fixed base.

2. The limiting device according to claim 1, characterized in that, The pressure-resistant limiting component includes: multiple connecting pipes and multiple connecting plates; Multiple connecting pipes are disposed in the first cavity. Along the radial direction of the connector, multiple connecting pipes are sequentially sleeved, with adjacent connecting pipes spaced apart, and adjacent connecting pipes are connected by the connecting plate. Among them, the outermost connecting pipe of the plurality of connecting pipes is connected to the connector, and the innermost connecting pipe of the plurality of connecting pipes is connected to the fixing base.

3. The limiting device according to claim 2, characterized in that, The plurality of connecting pipes include a first connecting pipe, a second connecting pipe, and a third connecting pipe sequentially sleeved along the radial direction of the connector, and the plurality of connecting plates include: A first connecting plate is disposed on the first connecting pipe; A first connecting ring is disposed at the end of the first connecting plate facing the fixed base, and the first connecting ring has a first embedding groove; The second connecting plate is disposed on the third connecting pipe; The second connecting ring is located at the end of the second connecting plate away from the fixed base, and the second connecting ring has a second embedding groove. The two ends of the second connecting tube are respectively embedded in the first embedding groove and the second embedding groove.

4. The limiting device according to claim 2, characterized in that, The plurality of connecting pipes further include: The fourth connecting pipe is disposed inside the third connecting pipe; The plurality of connecting plates also include a third connecting plate, which is connected to the fourth connecting pipe and the third connecting pipe.

5. The limiting device according to claim 2, characterized in that, The first connecting pipe and the third connecting pipe are made of low-temperature resistant material, and the second connecting pipe is made of low thermal conductivity material.

6. The limiting device according to claim 2, characterized in that, The connector has a connecting portion disposed within the first cavity, and the connecting portion has a mounting groove; The end of the outermost connecting pipe among the plurality of connecting pipes is embedded in the mounting groove and is fixedly connected to the groove wall of the mounting groove.

7. The limiting device according to any one of claims 1-6, characterized in that, The flexible limiting component includes: The first limiting member is disposed in the first cavity and is connected to the pressure-resistant limiting component; The second limiting member is disposed within the fixed base; A flexible pull rope, one end of which is connected to the first limiting member, and the other end of which is threaded through the pressure-resistant limiting component and connected to the second limiting member.

8. The limiting device according to claim 7, characterized in that, The first limiting member includes: The first anchor has one end located in the first cavity and the other end passing through the pressure-resistant limiting component. The first anchor is connected to the flexible pull rope. A first locking member is disposed in the first cavity and is movably connected to the first anchor. The first locking member abuts against the end of the anti-pressure limiting assembly away from the fixed seat.

9. The limiting device according to claim 7, characterized in that, The fixed base has a second chamber, and the second limiting member includes: The second anchor has one end located in the second cavity and the other end inserted through the pressure-resistant limiting component. The second anchor is connected to the flexible pull rope. The second locking member is disposed in the second cavity and is movably connected to the second anchor. The second locking member abuts against the end of the anti-pressure limiting component away from the first limiting member.

10. The limiting device according to claim 7, characterized in that, The flexible pull rope is made of a high-strength, low-thermal-conductivity material.

11. The limiting device according to claim 7, characterized in that, The flexible pull rope is connected to the first limiting member by a first adhesive, and the flexible pull rope is connected to the second limiting member by a second adhesive.

12. 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 1-11.

13. The storage and transportation container according to claim 12, characterized in that, The connector is located at the end of the inner container, and the fixing seat is located at the end of the outer shell.

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