High vacuum adiabatic LNG cryogenic transport gas tank

Abstract

The application provides a high-vacuum heat-insulation type LNG low-temperature transportation gas tank, and belongs to the technical field of LNG vacuum heat-insulation transportation gas tanks. The application relates to an outer tank, an inner tank arranged in the outer tank, an insulating layer arranged between the inner wall of the outer tank and the inner wall of the inner tank, two bearing seats arranged at the bottom of the outer tank, and a mounting seat fixedly connected to the bottom of the two bearing seats. The application further relates to a wave-preventing and wave-suppressing assembly arranged in the inner tank and used for suppressing the shaking of liquid natural gas during transportation. In the application, the wave-preventing and wave-suppressing assembly is arranged to form a double-layer wave-suppressing structure together with the self-adaptive floating wave-suppressing assembly. The floating ball can be self-adaptively lifted and lowered along with the liquid level, so that the wave-preventing plate is always attached to the liquid surface, the liquid shaking kinetic energy is effectively attenuated, the surge impact in the tank is greatly weakened, the tank pressure is stable, the wave-preventing and flow-stabilizing effect is excellent, and the problem that the surge impact in the pipe cannot be weakened in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of LNG vacuum insulated transport tank technology, and more specifically, to a high-vacuum insulated LNG cryogenic transport tank. Background Technology

[0002] Against the backdrop of continuous energy structure adjustment and increasing demand for clean energy, liquefied natural gas (LNG) is playing an increasingly important role in the energy sector due to its advantages such as high efficiency, cleanliness, and environmental friendliness. LNG cryogenic transport tanks are mainly used for on-board storage and transportation of cryogenic liquefied natural gas.

[0003] A search revealed a Chinese patent (application number: CN202520630858.X) proposing an LNG vacuum-insulated transport storage tank. The tank includes an outer tank, an inner tank with an insulation material layer fixedly installed on its inner wall, and an inner tank fixedly installed on the inner wall of the insulation material layer. A vacuum layer is provided between the insulation material layer and the inner tank. A connecting pipe (number three) is connected to the bottom inner wall of the insulation material layer, and a vacuum exhaust pipe is connected to the bottom of the connecting pipe (number three). This device uses a high-vacuum multi-layer wound insulation layer as the insulation material layer. Its metal reflective layer and spacer layer, combined with the vacuum layer between the outer and inner tanks, greatly improve the insulation performance, effectively reducing LNG vaporization loss during transportation, lowering energy consumption, and improving transportation economy. The high vacuum state of the vacuum layer is maintained through the connection pipe (number three) and the vacuum exhaust pipe, continuously ensuring the insulation effect and guaranteeing the stable storage and transportation of LNG.

[0004] However, the above-mentioned devices still have certain shortcomings: 1. Under the conditions of vehicle bumps, start-stop, and turning, the liquid natural gas inside the gas tank is prone to large-scale surges and shaking impacts. The kinetic energy of the liquid shaking cannot be effectively consumed, which can easily cause violent pressure fluctuations inside the tank and tank impact fatigue, posing safety hazards; 2. The gas tank in the existing technology lacks a special reinforcement structure. When installed on the vehicle, it is mostly fixed by ordinary straps. The straps are subject to vibration and stress fatigue for a long time, and are prone to aging, loosening or even breaking. Once the straps fail, the gas tank is prone to slippage and falling during transportation, which can cause major safety accidents such as leakage and explosion, posing great safety hazards for storage and transportation.

[0005] Therefore, we have made improvements and proposed a high-vacuum insulated LNG cryogenic transport tank to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to address the problems of liquefied natural gas in vehicle-mounted LNG tanks being prone to sloshing, causing pressure fluctuations and tank fatigue; and the straps being prone to aging and breakage, making the tanks easy to slip off.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution: A high-vacuum insulated LNG cryogenic transport tank includes an outer tank, an inner tank inside the outer tank, an insulation layer between the inner wall of the outer tank and the inner wall of the inner tank, two support seats at the bottom of the outer tank, and a mounting base fixedly connected to the bottom of the two support seats. The tank also includes: Wave-damping components, installed inside the inner tank, are used to suppress the sloshing of liquefied natural gas during transportation; The clamping component, installed on the mounting base, is used to clamp the outer tank.

[0008] As a preferred technical solution of this application, the wave-damping assembly includes multiple wave-damping plates fixed in the inner tank, each wave-damping plate having two waist-shaped holes and an opening at the bottom.

[0009] As a preferred technical solution of this application, a fixing plate is fixedly connected to both sides of the top of the wave deflector by bolts. A guide rod is fixedly connected to the outer side wall of the fixing plate. A sliding sleeve is slidably connected to the vertical part of the guide rod. A set of connecting plates is fixedly connected to the outer peripheral side wall of the bottom of the sliding sleeve. A set of floats is uniformly fixedly connected to the lower end face of the connecting plate. A wave-suppressing plate is fixedly connected to the upper end face of the connecting plate.

[0010] As a preferred technical solution of this application, the clamping assembly includes a support plate fixed in the mounting base. A set of lifting columns are evenly slidably connected to the support plate. An arc-shaped plate is fixedly connected to the top of the lifting column, and a base plate is fixedly connected to the bottom of the lifting column. A set of rings corresponding to the positions of the base plate are fixedly connected to the lower end face of the support plate. A spring is sleeved on the lifting column. The two ends of the spring are fixedly connected to the base plate and the rings, respectively. A lifting seat is fixedly connected to the lower end face of the base plate. A connecting rod is rotatably connected to both ends of the lifting seat. A clamping rod is rotatably connected to the outer end of each connecting rod. A clamping wheel is rotatably connected to the top of the clamping rod. A rotating rod is fixedly connected between the clamping rods on the same side. Fixed plates are rotatably connected to both ends of the rotating rod through bearings. The fixed plates are fixedly connected to the side walls of the mounting base, respectively.

[0011] As a preferred technical solution of this application, the height of the clamping wheel after clamping is higher than the center point of the outer tank, and the clamping wheel is in close contact with the outer wall of the outer tank after clamping.

[0012] As a preferred technical solution of this application, two straps are evenly fitted on the outer can, and two threaded posts are fixedly connected to the two bottom ends of the two straps. Each threaded post is fitted with an installation head, and a nut is provided at the bottom of the installation head. The nut is threadedly connected to the threaded post. A support is fixedly connected to the rear end of the installation head, and the support is fixedly connected to the installation base.

[0013] As a preferred technical solution of this application, two limiting rings are symmetrically and fixedly connected on the outer peripheral sidewall of the outer tank, and the outer sidewall of the limiting ring is in contact with the inner sidewall of the bearing seat.

[0014] As a preferred technical solution of this application, the bottom of the mounting base is fixedly connected to a mounting plate, and the mounting plate is provided with mounting holes.

[0015] As a preferred technical solution of this application, the mounting base is symmetrically and fixedly connected with two longitudinally arranged reinforcing plates.

[0016] As a preferred technical solution of this application, a set of reinforcing blocks are uniformly and fixedly connected between the bottom wall of the bearing seat and the side wall of the mounting seat.

[0017] In the scheme of this application: 1. By setting up anti-wave and wave-suppressing components, the anti-wave plate and the adaptive floating wave-suppressing components form a double-layer wave-suppressing structure. The float can rise and fall adaptively with the liquid level, ensuring that the wave-suppressing plate is always in contact with the liquid surface, effectively attenuating the kinetic energy of liquid sloshing, greatly reducing the impact of surges in the tank, stabilizing the pressure in the tank, and achieving excellent wave suppression and flow stabilization effects. This solves the problem of inconvenience in weakening the surge impact in the pipe in the existing technology. 2. By using a clamping component and straps, a dual protection system is achieved, which can effectively share the load of the straps, avoid fatigue and breakage of the straps under long-term stress, prevent the safety hazards of gas tanks falling or slipping during transportation, greatly improve the safety and reliability of vehicle-mounted storage and transportation, and solve the problem of poor stability of gas tanks in existing technologies. Attached Figure Description

[0018] Figure 1 This is one of the overall structural schematic diagrams of the present invention; Figure 2 This is the second schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the wave-damping and wave-suppressing component of the present invention; Figure 5 This is a schematic diagram of the clamping component of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the clamping component of the present invention; Figure 7For the present invention Figure 2 Enlarged view of point A in the middle; Figure 8 This is a front view structural diagram of the present invention.

[0019] In the diagram: 1. Outer tank; 2. Inner tank; 3. Insulation layer; 4. Bearing base; 5. Mounting base; 6. Wave-damping assembly; 601. Wave-damping plate; 602. Waist-shaped hole; 603. Through port; 604. Fixing plate; 605. Guide rod; 606. Sliding sleeve; 607. Connecting plate; 608. Float; 609. Wave-damping plate; 7. Clamping assembly; 701. Support plate; 702. Lifting column; 703. 704. Arc plate; 705. Base plate; 706. Ring; 707. Spring; 708. Lifting seat; 709. Connecting rod; 7000. Clamping rod; 7010. Clamping wheel; 7011. Rotating rod; 7012. Fixing plate; 8. Binding strap; 9. Threaded post; 10. Mounting head; 11. Nut; 12. Support; 13. Limiting ring; 14. Mounting plate; 15. Reinforcing plate; 16. Reinforcing block. Detailed Implementation

[0020] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Please see Figures 1-8 This embodiment proposes a high-vacuum insulated LNG cryogenic transport tank, including an outer tank 1, an inner tank 2 inside the outer tank 1, an insulation layer 3 between the inner wall of the outer tank 1 and the inner wall of the inner tank 2, two support seats 4 at the bottom of the outer tank 1, and a mounting base 5 fixedly connected to the bottom of the two support seats 4, and also includes: Wave-damping component 6 is installed in the inner tank 2 to suppress the sloshing of liquid natural gas during transportation; The clamping component 7 is mounted on the mounting base 5 and is used to clamp the outer tank 1.

[0022] The outer tank 1 serves as the external protective bearing shell, primarily protecting the internal structure, withstanding external impacts, and providing installation and fixation. The inner tank 2 is a dedicated storage cavity for cryogenic LNG, directly holding cryogenic liquefied natural gas. The insulation layer 3, relying on the principle of high-vacuum insulation, isolates heat transfer between the internal and external environments, effectively preventing external high-temperature heat from penetrating into the inner tank 2, avoiding vaporization and pressurization of the LNG inside the tank due to heating, ensuring the stability of cryogenic storage, and reducing the risk of abnormal internal pressure during transportation. The two bearing seats 4, as the intermediate bearing structure of the tank, can evenly bear the overall weight of the outer tank 1, inner tank 2, and the medium inside the tank, dispersing the pressure generated by the tank's own weight. The mounting seat 5 is the integrated mounting base for the entire gas tank equipment, used to integrate and fix the tank, clamping components 7, and all supporting structures, while simultaneously achieving the overall assembly and positioning of the equipment and the transport carrier, ensuring the overall stability of the equipment during transportation.

[0023] like Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, the anti-wave and wave-suppressing component 6 further includes multiple anti-wave plates 601 fixed in the inner tank 2. Each anti-wave plate 601 has two waist-shaped holes 602, and the bottom of the anti-wave plate 601 has an opening 603.

[0024] Multiple sets of baffles 601 divide the liquid storage space inside the tank into sections, which can effectively block the large wave impact generated by liquefied natural gas during transportation bumps, weaken the overall surging inertia of the liquid, and reduce the impact force of the liquid on both ends of the tank. The waist-shaped holes 602 and the bottom openings 603 on the baffles 601 are liquid flow channels. When the liquid is shaken, some liquid can slowly flow through the waist-shaped holes 602 and the bottom openings 603, which not only avoids the complete blockage of the liquid and the resulting local pressure concentration, but also buffers the amplitude of liquid shaking and reduces the shaking force, achieving the effect of graded wave suppression, pressure relief and flow stabilization, effectively improving the stability of liquid storage and transportation inside the tank.

[0025] like Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, further, fixing plates 604 are fixedly connected to both sides of the top of the wave deflector 601 by bolts. Guide rods 605 are fixedly connected to the outer sidewalls of the fixing plates 604. Sliding sleeves 606 are slidably connected to the vertical part of the guide rods 605. A set of connecting plates 607 are fixedly connected to the outer peripheral sidewalls of the bottom of the sliding sleeves 606. A set of floats 608 are uniformly fixedly connected to the lower end face of the connecting plates 607. Wave-suppressing plates 609 are fixedly connected to the upper end face of the connecting plates 607.

[0026] The float 608 can adaptively and synchronously rise and fall with the LNG liquid level in the tank. During the rise and fall of the liquid level, it can drive the connecting plate 607 and the sliding sleeve 606 to slide vertically along the guide rod 605, thereby precisely driving the top wave suppressor 609 to rise and fall synchronously with the liquid level, ensuring that the wave suppressor 609 always works in contact with the liquid level. When the liquefied natural gas sloshes and surges due to transportation bumps, the flowing liquid will continuously impact the wave suppressor 609, causing the wave suppressor 609, the connecting plate 607, and the sliding sleeve 606 to undergo adaptive small-amplitude rotation and floating displacement along the guide rod 605. Through rotation buffering and floating unloading, the kinetic energy generated by the sloshing of liquefied natural gas is effectively consumed and attenuated, greatly reducing the impact force of liquid surge.

[0027] like Figure 1 , Figure 5 and Figure 6 As shown, in a preferred embodiment, based on the above method, the clamping assembly 7 further includes a support plate 701 fixed in the mounting base 5. A set of lifting columns 702 are evenly slidably connected to the support plate 701. An arc-shaped plate 703 is fixedly connected to the top of the lifting column 702, and a base plate 704 is fixedly connected to the bottom of the lifting column 702. A set of rings 705 corresponding to the positions of the base plate 704 are fixedly connected to the lower end face of the support plate 701. A spring 706 is sleeved on the lifting column 702, and the two ends of the spring 706 are respectively connected to... The base plate 704 and the ring 705 are fixedly connected. The lower end face of the base plate 704 is fixedly connected to the lifting seat 707. Both ends of the lifting seat 707 are rotatably connected to the connecting rod 708. The outer ends of the connecting rod 708 are rotatably connected to the clamping rod 709. The top end of the clamping rod 709 is rotatably connected to the clamping wheel 7010. The clamping rod 7011 is fixedly connected between the clamping rods 709 on the same side. The two ends of the rotating rod 7011 are rotatably connected to the fixing plate 7012 through the bearing. The fixing plate 7012 is fixedly connected to the side wall of the mounting base 5 respectively.

[0028] When the tank is placed on the support seat 4, the tank's own weight presses down on the arc plate 703, causing the lifting column 702 to slide downwards along the support plate 701, and simultaneously causing the bottom plate 704 to move downwards. At this time, the spring 706 is in a stretched and stored energy state due to the pull of the bottom plate 704. The downward movement of the bottom plate 704 causes the lifting seat 707 to descend synchronously. Through the connecting rods 708 at both ends, the clamping rod 709 is pushed and pulled, causing the clamping rod 709 to rotate inwards and retract around the rotating rod 7011 as the fulcrum. This causes the top clamping wheel 7010 to press against and squeeze the outer wall of the outer tank 1, achieving a circumferential clamping and limiting of the tank, greatly improving the stability of the tank during transportation. like Figure 1 As shown, in a preferred embodiment, based on the above method, the height of the clamping wheel 7010 after clamping is higher than the center point of the outer tank 1, and the clamping wheel 7010 is in close contact with the outer wall of the outer tank 1 after clamping.

[0029] The clamping wheel 7010 is positioned above the center point of the outer tank 1, employing a high-level circumferential clamping and limiting method. This allows for oblique constraint of the tank's displacement from the upper part of the tank. Compared to a low-level support structure, it effectively limits the tank's movement and swaying, providing a wider limiting coverage and stronger constraint stability. Simultaneously, the clamping wheel 7010 is in close contact with the outer wall of the outer tank 1, ensuring a high-strength fixing effect while preventing hard compression damage to the outer wall of the outer tank 1, further enhancing the overall stability of the tank during transportation.

[0030] like Figure 1 , Figure 2 and Figure 7 As shown, in a preferred embodiment, based on the above method, two straps 8 are evenly fitted on the outer can 1. Two threaded posts 9 are fixedly connected to the two bottom ends of the two straps 8. An installation head 10 is fitted on each threaded post 9. A nut 11 is provided at the bottom of the installation head 10. The nut 11 is threadedly connected to the threaded post 9. A support 12 is fixedly connected to the rear end of the installation head 10. The support 12 is fixedly connected to the installation seat 5.

[0031] Two sets of straps 8 are wrapped around the outside of the outer tank 1 to form a ring-shaped restraint structure, which can tighten and limit the overall position of the tank. The bottom end of the straps 8 is detachably locked and fixed by the threaded engagement of the threaded post 9, the mounting head 10 and the nut 11. The tightness of the straps 8 can be adjusted by tightening the nut 11 to meet the tank's wrapping and locking requirements. The support 12 firmly connects the mounting head 10 and the mounting base 5, so that the straps 8 locking structure and the bottom clamping component 7 form a double locking system, further strengthening the overall fixing strength of the tank and preventing the tank from loosening or slipping during transportation. It is convenient to disassemble and assemble and locks securely.

[0032] like Figure 1 and Figure 8 As shown, in a preferred embodiment, based on the above method, two limiting rings 13 are symmetrically and fixedly connected on the outer peripheral sidewall of the outer tank 1, and the outer sidewall of the limiting ring 13 is in contact with the inner sidewall of the bearing seat 4.

[0033] The limiting rings 13 symmetrically arranged on the outer side of the outer tank 1 fit and align with the inner side wall of the bearing seat 4, which can perform lateral limiting and positioning of the tank, restricting the horizontal deviation and axial movement of the tank during transportation, and preventing relative sliding and misalignment between the outer tank 1 and the bearing seat 4. In conjunction with the clamping component 7 and the strap 8 structure, it forms an all-round limiting protection, further improving the assembly accuracy and transportation stability of the tank, and preventing safety hazards caused by tank deviation.

[0034] like Figure 2 As shown, in a preferred embodiment, based on the above method, a mounting plate 14 is fixedly connected to the bottom of the mounting base 5, and mounting holes are provided on the mounting plate 14.

[0035] The bottom mounting plate 14, with its mounting holes, serves as the reference structure for the overall assembly of the gas tank. It enables quick alignment and bolt tightening of the gas tank with the transport vehicle and fixed base. The structure is simple and easy to assemble. It can evenly transfer the overall load of the gas tank to the mounting base, ensuring that the gas tank is placed stably and securely. It is suitable for various installation conditions such as vehicle transport and fixed storage.

[0036] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, two longitudinally arranged reinforcing plates 15 are symmetrically and fixedly connected inside the mounting base 5.

[0037] The reinforcing plates 15 arranged longitudinally inside the mounting base 5 can reinforce the overall structure of the internal frame of the mounting base 5, effectively improving the mounting base 5's resistance to bending, extrusion, and deformation. They can evenly distribute the vertical load of the tank and the vibration load during transportation, preventing the mounting base 5 from deforming or cracking due to long-term stress, improving the overall strength and service life of the bottom bearing structure, and ensuring the long-term stable storage and transportation of the gas tank.

[0038] like Figure 2 and Figure 7 As shown, in a preferred embodiment, based on the above method, a set of reinforcing blocks 16 are uniformly fixedly connected between the bottom wall of the bearing seat 4 and the side wall of the mounting seat 5.

[0039] A set of reinforcing blocks 16, evenly fixed between the bottom wall of the bearing seat 4 and the side wall of the mounting seat 5, serves as a connection reinforcement structure. After the bearing seat 4 bears the weight of the tank, the load will be concentrated at the connection position between it and the mounting seat 5. The reinforcing blocks 16 can fill the connection gap between the two, strengthen the connection between the bearing seat 4 and the mounting seat 5, increase the connection force area, disperse the concentrated load at the connection point, effectively avoid problems such as breakage, detachment, and deformation at the connection point, and improve the overall stability and load-bearing capacity of the bearing structure.

[0040] Specifically, in use, this high-vacuum insulated LNG cryogenic transport tank achieves cryogenic storage through a double-layered structure of outer tank 1 and inner tank 2, combined with an insulation layer 3. This prevents LNG vaporization loss caused by external heat intrusion and ensures a stable cryogenic storage and transportation environment. During transportation, a double-layered wave-damping system is formed by a fixed anti-surge plate 601 inside the inner tank 2 and a floating wave-damping plate 609. The anti-surge plate 601 divides the liquid storage space inside the tank into sections, effectively blocking the large wave impact generated by the liquefied natural gas during transportation bumps, weakening the overall surging inertia of the liquid, and reducing the impact force of the liquid on both ends of the tank. The float 608 moves with the contents of the tank. The LNG liquid level is adaptively and synchronously raised and lowered. During the liquid level raising and lowering process, the connecting plate 607 and the sliding sleeve 606 can be driven to slide vertically along the guide rod 605, thereby precisely driving the top wave-suppressing plate 609 to rise and fall synchronously with the liquid level. This ensures that the wave-suppressing plate 609 always works in contact with the liquid level. When the liquefied natural gas sloshes and surges due to transportation bumps, the flowing liquid will continuously impact the wave-suppressing plate 609, causing the wave-suppressing plate 609, the connecting plate 607, and the sliding sleeve 606 to undergo adaptive small-amplitude rotation and floating displacement along the guide rod 605. Through rotation buffering and floating force relief, the kinetic energy generated by the sloshing of liquefied natural gas is effectively consumed and attenuated. The tank body relies on its own weight to press down and trigger the clamping assembly 7. When the tank body is installed on the support seat 4, the tank body's own weight presses down the arc plate 703, causing the lifting column 702 to slide down along the support plate 701, and simultaneously causing the bottom plate 704 to move down. At this time, the spring 706 is in a stretched and stored energy state due to the pull of the bottom plate 704. The downward movement of the bottom plate 704 causes the lifting seat 707 to descend synchronously. Through the connecting rods 708 at both ends, the clamping rod 709 is pushed and pulled, causing the clamping rod 709 to rotate inward and retract around the rotating rod 7011 as the fulcrum. This causes the top clamping wheel 7010 to press against and squeeze the outer wall of the outer tank 1, achieving a circumferential clamping and limiting of the tank body. At the same time, it works with the straps 8 to achieve double reinforcement of the gas tank.

[0041] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-vacuum insulated LNG cryogenic transport tank, comprising an outer tank (1), characterized in that, The outer tank (1) has an inner tank (2) inside. An insulation layer (3) is provided between the inner wall of the outer tank (1) and the inner wall of the inner tank (2). The bottom of the outer tank (1) has two support seats (4). The bottom of the two support seats (4) is fixedly connected to a mounting base (5). The outer tank (1) also includes: Wave-damping assembly (6) is installed in the inner tank (2) to suppress the sloshing of liquid natural gas during transportation; The clamping component (7) is mounted on the mounting base (5) and is used to clamp the outer tank (1).

2. The high-vacuum insulated LNG cryogenic transport tank according to claim 1, characterized in that, The wave-damping assembly (6) includes multiple wave-damping plates (601) fixed in the inner tank (2). Each wave-damping plate (601) has two waist-shaped holes (602) and an opening (603) at the bottom.

3. A high-vacuum insulated LNG cryogenic transport tank according to claim 2, characterized in that, The top two side walls of the wave deflector (601) are fixedly connected to the fixing plates (604) by bolts. The outer side wall of the fixing plates (604) is fixedly connected to the guide rods (605). The vertical part of the guide rods (605) is slidably connected to the sliding sleeves (606). The outer peripheral side wall of the bottom of the sliding sleeves (606) is fixedly connected to a set of connecting plates (607). The lower end face of the connecting plates (607) is evenly fixedly connected to a set of floats (608). The upper end face of the connecting plates (607) is fixedly connected to the wave suppressing plates (609).

4. A high-vacuum insulated LNG cryogenic transport tank according to claim 1, characterized in that, The clamping assembly (7) includes a support plate (701) fixed in the mounting base (5). A set of lifting columns (702) are slidably connected to the support plate (701). An arc-shaped plate (703) is fixedly connected to the top of the lifting column (702). A base plate (704) is fixedly connected to the bottom of the lifting column (702). A set of circular rings (705) corresponding to the positions of the base plate (704) are fixedly connected to the lower end face of the support plate (701). A spring (706) is sleeved on the lifting column (702). The two ends of the spring (706) are respectively connected to the base plate (704) and the circular rings (705). The bottom surface of the base plate (704) is fixedly connected to a lifting seat (707). Both ends of the lifting seat (707) are rotatably connected to a connecting rod (708). The outer ends of the connecting rods (708) are rotatably connected to a clamping rod (709). The top end of the clamping rod (709) is rotatably connected to a clamping wheel (7010). The clamping rods (709) on the same side are fixedly connected to a rotating rod (7011). Both ends of the rotating rod (7011) are rotatably connected to a fixing plate (7012) through bearings. The fixing plate (7012) is fixedly connected to the side wall of the mounting base (5).

5. A high-vacuum insulated LNG cryogenic transport tank according to claim 4, characterized in that, The height of the clamping wheel (7010) after clamping is higher than the center point of the outer tank (1), and the clamping wheel (7010) is in close contact with the outer wall of the outer tank (1) after clamping.

6. A high-vacuum insulated LNG cryogenic transport tank according to claim 1, characterized in that, Two straps (8) are evenly fitted on the outer can (1). Two threaded posts (9) are fixedly connected to the two bottom ends of the two straps (8). An installation head (10) is fitted on each of the threaded posts (9). A nut (11) is provided at the bottom of the installation head (10). The nut (11) is threadedly connected to the threaded post (9). A support (12) is fixedly connected to the rear end of the installation head (10). The support (12) is fixedly connected to the installation seat (5).

7. A high-vacuum insulated LNG cryogenic transport tank according to claim 1, characterized in that, Two limiting rings (13) are symmetrically and fixedly connected on the outer peripheral sidewall of the outer tank (1), and the outer sidewall of the limiting ring (13) is in contact with the inner sidewall of the bearing seat (4).

8. A high-vacuum insulated LNG cryogenic transport tank according to claim 1, characterized in that, The bottom of the mounting base (5) is fixedly connected to a mounting plate (14), and the mounting plate (14) is provided with mounting holes.

9. A high-vacuum insulated LNG cryogenic transport tank according to claim 1, characterized in that, The mounting base (5) is symmetrically and fixedly connected to two longitudinally arranged reinforcing plates (15).

10. A high-vacuum insulated LNG cryogenic transport tank according to claim 1, characterized in that, A set of reinforcing blocks (16) are uniformly fixedly connected between the bottom wall of the bearing seat (4) and the side wall of the mounting seat (5).

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