Low-temperature medium storage tank system

Abstract

The invention relates to a low-temperature medium storage tank system which comprises an outer container and a plurality of inner container sets arranged in the outer container, each inner container set comprises at least one container body, and each container body is used for storing a low-temperature medium. Interlayer spaces are formed between the outer container and the container bodies and used for being filled with heat insulation materials. Each inner container group is provided with a liquid-phase pipeline and a gas-phase pipeline, the liquid-phase pipeline is communicated with the bottom of each container body of each inner container group, the liquid-phase pipeline is arranged in the interlayer space and outwards penetrates out of the outer container, the gas-phase pipeline is communicated with the top of each container body of each inner container group, and the gas-phase pipeline is arranged in the interlayer space and outwards penetrates out of the outer container. According to the storage tank system, more than two low-temperature media can be stored at the same time, or two technological operations can be carried out at the same time. Therefore, the storage tank system is more powerful in function, wider in application, more flexible in use mode and capable of effectively saving land for project construction.

Description

Technical Field

[0001] The present invention relates to the technical field of low-temperature storage equipment, and in particular to a low-temperature medium storage tank system. Background Art

[0002] With the advancement of science and technology, cryogenic liquids such as liquid nitrogen, liquid oxygen, and liquid argon are used more and more frequently in industry, medicine, aerospace, and daily life. Equipment for storing such cryogenic liquids usually consists of an inner container, an outer shell, a vacuum interlayer, and a piping system. The outer shell is wrapped outside the inner container, and the inner container is used to store the cryogenic liquid.

[0003] However, when existing storage equipment is used in projects such as peak-shaving stations, gasification stations and liquefaction plants, one project often requires two or more devices to be used in conjunction to achieve simultaneous process operations or to achieve the storage of multiple different media, which causes many inconveniences in operation.

[0004] Therefore, there is an urgent need for a low-temperature medium storage tank to solve this scenario where multiple devices need to be used in coordination. Summary of the invention

[0005] One purpose of the present invention is to solve the deficiencies in the prior art and provide a cryogenic medium storage tank system. To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A cryogenic medium storage tank system comprises: an outer container and a plurality of inner container groups arranged in the outer container, each inner container group comprises at least one container body, and each container body is used to store a cryogenic medium;

[0007] An interlayer space is formed between the outer container and each container body, and the interlayer space is used to fill with insulation material;

[0008] Each inner container group is provided with a liquid phase pipeline and a gas phase pipeline. The liquid phase pipeline is connected with the bottom of each container body of each inner container group, the liquid phase pipeline is arranged in the interlayer space and passes out of the outer container. The gas phase pipeline is connected with the top of each container body of each inner container group, the gas phase pipeline is arranged in the interlayer space and passes out of the outer container.

[0009] In one embodiment, each container body is a vertically arranged structure;

[0010] The container bodies of the plurality of inner container groups are arranged parallel to each other and spaced apart;

[0011] When each inner container group includes two or more container bodies, the two or more container bodies are arranged in parallel and spaced apart from each other.

[0012] In one embodiment, each container body is supported by a plurality of pillars and arranged in an outer container, the top end of the pillar is connected to the bottom of the container body, and the bottom end of the pillar is connected to the bottom of the outer container. An insulation structure is provided on the pillar, and the insulation structure is used to prevent the cold of the container body from being transferred to the outer container.

[0013] In one embodiment, the pillar includes a first column and a second column, the top end of the first column is connected to the bottom of the container body, the bottom end of the first column is connected to the top end of the second column, the bottom end of the second column is connected to the bottom of the outer container, and the insulation structure is arranged between the first column and the second column.

[0014] In one embodiment, the thermal insulation structure includes a first partition, an insulation layer and a second partition. The first partition is fixed to the bottom end of the first column, the second partition is fixed to the top end of the second column, the insulation layer is sandwiched between the first partition and the second partition, and the first partition is relatively fixedly connected to the second partition.

[0015] In one embodiment, the thermal insulation structure includes a fastener, a first fixing hole is opened on the first partition, a second fixing hole is opened on the second partition, and a through hole is opened on the thermal insulation layer. The fastener is used to pass through the first fixing hole, the through hole and the second fixing hole in sequence.

[0016] In one embodiment, the thermal insulation structure includes a plurality of thermal insulation gaskets, which are respectively sleeved outside the fasteners and respectively accommodated in the first fixing holes and the second fixing holes. The thermal insulation gaskets can isolate the heat transfer between the fasteners and the first partition and the second partition.

[0017] In one embodiment, at least the first column is a hollow structure, and the interior of the first column is filled with a heat insulating material.

[0018] In one of the embodiments, the cryogenic medium storage tank system further includes a liquid leakage detection structure, which is disposed on the outer container and is used to detect a liquid leakage state in the interlayer space.

[0019] In one embodiment, the liquid leakage detection structure includes a temperature sensor, which is arranged on the side wall of the outer container, and the detection end of the temperature sensor extends into the interlayer space; and / or

[0020] The liquid leakage detection structure comprises a sampling valve port, which is arranged on the side wall of the outer container and communicated with the interlayer space.

[0021] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0022] In the present invention, the cryogenic medium storage tank system includes an outer container and a plurality of inner container groups arranged in the outer container, each inner container group includes at least one container body, and each container body is used to store the cryogenic medium. Therefore, the storage tank system can store more than two cryogenic media at the same time, or achieve the purpose of performing two process operations at the same time. Therefore, the storage tank system has more powerful functions, wider applications, more flexible usage, and can effectively save project construction land. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a cryogenic medium storage tank system according to an embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the distribution of the internal container groups of the cryogenic medium storage tank system according to one embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the distribution of the inner container groups of the cryogenic medium storage tank system according to another embodiment of the present invention.

[0026] Figure 4 yes Figure 2 The schematic diagram of the principle of liquid inlet and outlet of two inner container groups of the low-temperature medium storage tank system shown in FIG.

[0027] Figure 5 yes Figure 2 The schematic diagram of the principle of gas discharge from two inner container groups of the cryogenic medium storage tank system shown is shown.

[0028] Figure 6 It is a schematic structural diagram of a support at the bottom of a container body in a cryogenic medium storage tank system according to an embodiment of the present invention.

[0029] Figure 7 It is a distribution diagram of a liquid leakage detection structure of a cryogenic medium storage tank system according to an embodiment of the present invention.

[0030] The following are the descriptions of the reference numerals:

[0031] 10-Storage tank system; 101-Storage tank foundation; 102-Insulation material;

[0032] 100 - outer container;

[0033] 200-inner container group; 210-container body; 220-liquid phase pipeline; 230-gas phase pipeline;

[0034] 300-Mezzanine space;

[0035] 400-pillar;

[0036] 410-insulation structure; 411-first partition; 412-insulation layer; 413-second partition; 414-fastener; 415-insulation gasket; 420-first column; 430-second column;

[0037] 500 - liquid leakage detection structure; 510 - temperature sensor; 520 - sampling valve port. DETAILED DESCRIPTION

[0038] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0039] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] See also Figure 1 and Figure 2 As shown, the cryogenic medium storage tank system 10 of the embodiment of the present invention includes an outer container 100 and a plurality of inner container groups 200 arranged in the outer container 100. The outer container 100 may be a straight cylindrical tank structure. The outer container 100 may be arranged vertically, which is beneficial to saving floor space. The outer container 100 may be made of carbon steel or low carbon alloy steel.

[0042] like Figure 1 As shown, the top of the outer container 100 may be an arc-shaped head structure. A tank foundation 101 may be provided at the bottom of the outer container 100, and the tank foundation 101 is used to support the outer container 100 and each inner container group 200 therein. The tank foundation 101 may be a reinforced concrete structure to stably and reliably support the outer container 100 and each inner container group 200 therein, thereby improving the pressure bearing capacity and load resistance capacity of the tank system 10.

[0043] like Figure 2 As shown, a plurality of inner container groups 200 are arranged in the outer container 100. Each inner container group 200 includes at least one container body 210, and each container body 210 is used to store a cryogenic medium.

[0044] For example, see Figure 2 Two inner container groups 200 may be arranged in the outer container 100, and each inner container group 200 may include five container bodies 210. The two inner container groups 200 may be used independently. For example, the two inner container groups 200 may be used to store different low-temperature media, and may be used to discharge or inlet liquids.

[0045] Or, see Figure 3 , three inner container groups 200 may be arranged in the outer container 100, one of the inner container groups 200 may include four container bodies 210, and the other two inner container groups 200 may each include three container bodies 210. The three inner container groups 200 may be used independently. For example, the three inner container groups 200 may be used to store different low-temperature media, and may be used to discharge or inlet liquids.

[0046] It should be noted that the container bodies 210 of the same inner container group 200 store the same cryogenic medium, while the container bodies 210 of different inner container groups 200 may store different cryogenic medium or the same cryogenic medium.

[0047] When the container bodies 210 of different inner container groups 200 store the same cryogenic medium, different process operations on the cryogenic medium can be achieved by storing the same cryogenic medium in different inner container groups 200. For example, during the use of the storage tank system 10, one inner container group 200 can be filled with liquid while another inner container group 200 can be discharged with liquid.

[0048] For another example, when both inner container groups 200 store liquefied natural gas (LNG), since LNG is composed of multiple components, liquid stratification will occur when it is stored for a long time, causing the gas to boil and tumble, and it is necessary to invert the tanks for mixing. Therefore, when both inner container groups 200 are used to store LNG, the two inner container groups 200 can be inverted with each other without the need to connect additional external tanks for inverting.

[0049] Each container body 210 may be made of low temperature resistant austenitic stainless steel or strain hardened steel plate, etc. The temperature range of the low temperature medium stored in each container body 210 may be -196°C to -45°C.

[0050] Each container body 210 may be a pressure container, which can prevent the container body 210 from releasing gas due to overpressure while maintaining the container body 210 storing liquid, thereby avoiding continuous gas discharge and reducing the loss of storage medium.

[0051] See also Figure 1 In one embodiment, each container body 210 is arranged vertically. The vertical arrangement structure can help save floor space.

[0052] like Figure 1 As shown, the container bodies 210 of the plurality of inner container groups 200 may be arranged in parallel and spaced apart from each other. In this way, it is convenient to arrange more container bodies 210 using the limited space in the outer container 100. In addition, the spaced arrangement between the container bodies 210 can prevent the media stored in different inner container groups 200 from affecting each other.

[0053] Each inner container group 200 may include one, two or more container bodies 210. Preferably, when an inner container group 200 includes more than two container bodies 210, the two or more container bodies 210 may be arranged in parallel and spaced apart from each other.

[0054] In the embodiment of the present application, the volume of a single container body 210 may be 50m3 to 500m3. The volume of the entire storage tank system 10 may be 500m3 to 6000m3. The container bodies 210 in each inner container group 200 may have the same volume. However, the present application is not limited thereto, and under certain conditions, the container bodies 210 in each inner container group 200 may also have different volumes.

[0055] See also Figure 1 As shown, an interlayer space 300 is formed between the outer container 100 and each container body 210, and the interlayer space 300 is used to fill the insulation material 102. The insulation material 102 can be expanded perlite material, foam glass material or polyurethane insulation material or a mixture of various insulation materials.

[0056] It can be understood that the interlayer space 300 exists between the inner wall of the outer container 100 and the outer wall of each container body 210, and between any two adjacent container bodies 210. The interlayer space 300 is filled with the insulation material 102 to play a role in heat insulation, thereby facilitating the maintenance of the low temperature state of the container body 210 and extending the low temperature storage time of the container body 210.

[0057] For example, the interlayer space 300 may be connected to an external nitrogen filling system, which is used to fill nitrogen into the interlayer space 300 to keep the interlayer space 300 in a positive pressure state and prevent moisture in the air from entering the interlayer space 300.

[0058] In other embodiments, the interlayer space 300 may also be connected to a vacuum system, and the vacuum system is used to evacuate the interlayer space 300 to maintain the vacuum state of the interlayer space 300.

[0059] See also Figure 2 , Figure 4 and Figure 5 As shown, each inner container group 200 is provided with a liquid phase pipeline 220, and the liquid phase pipeline 220 is connected to the bottom of each container body 210 of each inner container group 200. The liquid phase pipeline 220 is arranged in the interlayer space 300 and passes through the outer container 100. Among them, the liquid phase pipeline 220 of each inner container group 200 may include a main pipe and multiple branch pipes, one end of the main pipe passes through the outer container 100, and the other end is respectively connected to one end of the multiple branch pipes, and the other ends of the multiple branch pipes are respectively connected to each container body 210. Through the liquid phase pipeline 220, the process operations such as liquid inlet and liquid outlet of each container body 210 of each inner container group 200 can be realized.

[0060] Each inner container group 200 is provided with a gas phase pipeline 230, which is connected to the top of each container body 210 of each inner container group 200, and the gas phase pipeline 230 is arranged in the interlayer space 300 and passes through the outer container 100. The gas phase pipeline 230 of each inner container group 200 may include a main pipe and multiple branch pipes, one end of the main pipe passes through the outer container 100, and the other end is respectively connected to one end of the multiple branch pipes, and the other ends of the multiple branch pipes are respectively connected to each container body 210. Through the gas phase pipeline 230, process operations such as pressure control and gas discharge of each container body 210 of each inner container group 200 can be realized.

[0061] It can be understood that each inner container group 200 can be provided with a set of liquid phase pipelines 220 and gas phase pipelines 230, so that each inner container group 200 can respectively meet the requirements of liquid inlet, liquid outlet, exhaust, etc.

[0062] It should be noted that each inner container group 200 may also include other pipelines, valves or process ports to meet the use requirements of the storage tank system 10. For example, a pressure gauge, a safety valve, etc. may be provided on the gas phase pipeline 230. For another example, a detection port may be provided on any container body 210 of each inner container group 200, through which the liquid level of the inner container group 200 can be detected. For another example, an inspection port may be provided on each container body 210, through which personnel can enter the container body 210 for inspection.

[0063] See also Figure 1 and Figure 6In one embodiment, each container body 210 is supported by a plurality of pillars 400 and disposed in the outer container 100. For example, three pillars 400 may be disposed at the bottom of each container body 210, and the three pillars 400 may be arranged in a triangular shape, which can improve the support stability of the container body 210.

[0064] like Figure 6 As shown, the top end of the support 400 is connected to the bottom of the container body 210, and the bottom end of the support 400 is connected to the bottom of the outer container 100. The support 400 is provided with a heat insulation structure 410, and the heat insulation structure 410 is used to prevent the cold energy of the container body 210 from being transferred to the outer container 100. By providing the heat insulation structure 410, the cold energy loss of the low-temperature medium in the container body 210 can be effectively avoided.

[0065] Specifically, the support column 400 includes a first column 420 and a second column 430, the top end of the first column 420 is connected to the bottom of the container body 210, the bottom end of the first column 420 is connected to the top end of the second column 430, and the bottom end of the second column 430 is connected to the bottom of the outer container 100. The heat insulation structure 410 is disposed between the first column 420 and the second column 430.

[0066] In this embodiment, the support 400 includes a first column 420 and a second column 430, which are separated by an insulation structure 410, which not only facilitates the installation of the insulation structure 410, but also effectively prevents the cold from being transferred downward along the support 400.

[0067] See also Figure 6 In one embodiment, the heat insulation structure 410 includes a first partition plate 411, a heat insulation layer 412, and a second partition plate 413. The first partition plate 411 is fixed to the bottom end of the first column 420, and the second partition plate 413 is fixed to the top end of the second column 430.

[0068] The first partition plate 411 may be welded to the bottom end of the first column 420. The area of ​​the first partition plate 411 may be greater than the cross-sectional area of ​​the first column 420.

[0069] The second partition plate 413 may be welded to the top end of the second column 430. The area of ​​the second partition plate 413 may be greater than the cross-sectional area of ​​the second column 430. The area of ​​the second partition plate 413 may be equal to the area of ​​the first partition plate 411.

[0070] like Figure 6As shown, the heat insulation layer 412 is sandwiched between the first partition 411 and the second partition 413, and the first partition 411 and the second partition 413 are relatively fixedly connected. Among them, the heat insulation layer 412 can be a heat insulation glass fiber reinforced plastic plate structure. The area of ​​the heat insulation layer 412 can be greater than or equal to the area of ​​the first partition 411 and the second partition 413. When the heat insulation layer 412 is sandwiched between the first partition 411 and the second partition 413, the first partition 411 and the second partition 413 are completely isolated by the heat insulation layer 412, so that the first column 420 and the second column 430 can be reliably isolated, and the cold transfer between the two is prevented.

[0071] Preferably, the first partition 411 and the second partition 413 can be detachably fixedly connected. Specifically, the thermal insulation structure 410 includes a fastener 414, a first fixing hole is provided on the first partition 411, a second fixing hole is provided on the second partition 413, a through hole is provided on the thermal insulation layer 412, and the fastener 414 is used to pass through the first fixing hole, the through hole and the second fixing hole in sequence. The fastener 414 can be a bolt. The first partition 411, the thermal insulation layer 412 and the second partition 413 are connected by the fastener 414, the structure is simple, and the first partition 411 and the second partition 413 can be reliably connected relatively fixedly.

[0072] like Figure 6 As shown, in one embodiment, the heat insulation structure 410 includes a plurality of heat insulation washers 415, which are respectively sleeved outside the fastener 414 and respectively accommodated in the first fixing hole and the second fixing hole. The heat insulation washers 415 can isolate the heat transfer between the fastener 414 and the first partition 411 and the second partition 413. By providing a plurality of heat insulation washers 415, the fastener 414 can be completely isolated from the first partition 411 and the second partition 413, so as to prevent the low temperature on one side of the container body 210 from being transferred downward through the first partition 411 and the fastener 414, and also prevent the relatively high temperature on one side of the outer container 100 from being transferred upward through the second partition 413 and the fastener 414. Thus, the coldness of the container body 210 can be further prevented from being transferred to the outer container 100, thereby improving the low temperature storage performance of the container body 210.

[0073] like Figure 6 As shown, in one embodiment, the first column 420 may be a hollow structure. The interior of the first column 420 may be filled with a heat insulating material 102. In this way, the cold energy of the container body 210 may be further prevented from being transferred to the outer container 100, thereby improving the low-temperature storage performance of the container body 210.

[0074] It is understandable that the second column 430 may also be a hollow structure, which also saves materials and reduces costs. Of course, in other embodiments, the second column 430 may also be a solid structure to help improve the supporting capacity of the pillar 400.

[0075] See also Figure 7 In one embodiment of the present application, the cryogenic medium storage tank system 10 further includes a liquid leakage detection structure 500 disposed on the outer container 100. The liquid leakage detection structure 500 is used to detect the liquid leakage state in the interlayer space 300. By providing the liquid leakage detection structure 500, it is convenient for the staff to timely discover and handle the medium leakage, thereby facilitating the safety of the storage tank system 10 and personnel.

[0076] For example, the leakage detection structure 500 may include a temperature sensor 510, which is disposed on the side wall of the outer container 100, and a detection end of the temperature sensor 510 extends into the interlayer space 300. When the temperature sensor 510 detects that the temperature in the interlayer space 300 drops significantly, it can be determined that the container body 210 may leak.

[0077] For example, the liquid leakage detection structure 500 includes a sampling valve port 520, which is disposed on the side wall of the outer container 100 and communicates with the interlayer space 300. When necessary, the gas in the interlayer space 300 can be collected through the sampling valve port 520 to analyze the gas composition and thereby determine whether the container body 210 is leaking.

[0078] For example, the sampling valve port 520 may be provided with a valve that can be opened and closed. When sampling is required, the valve is opened; when sampling is not required, the valve is closed to ensure the sealing of the interlayer space 300.

[0079] In other embodiments, the liquid leakage detection structure 500 may also be a liquid leakage sensor. The liquid leakage sensor may preferably be disposed at the bottom of each container body 210 and located in the interlayer space 300 to detect in real time whether the container body 210 is leaking.

[0080] The cryogenic medium storage tank system of the embodiment of the present application includes an outer container 100 and a plurality of inner container groups 200 disposed in the outer container 100. Each inner container group 200 includes at least one container body 210. Each container body 210 is used to store cryogenic medium. Therefore, the storage tank system can store more than two cryogenic media at the same time, or perform two process operations at the same time.

[0081] For example, if the cryogenic medium storage tank system of the embodiment of the present application is applied to a peak-shaving station project, then one storage tank system can realize the process operation of separating the inlet and outlet liquids. For another example, if the cryogenic medium storage tank system of the embodiment of the present application is applied to a peak-shaving station project, if long-term storage is required, the tank can be emptied in one storage tank system after a certain period of time to avoid component stratification. For another example, if the cryogenic medium storage tank system of the embodiment of the present application is applied to an air separation or liquefaction plant project, when it is necessary to store liquid oxygen and liquid nitrogen at the same time, or to store LNG and liquid ethylene at the same time, one storage tank system can achieve the purpose of storing liquid oxygen and liquid nitrogen at the same time, or storing LNG and liquid ethylene at the same time.

[0082] The cryogenic medium storage tank system of the embodiment of the present application adopts a method in which multiple inner container groups share one outer container, and the multiple inner container groups can be arranged in a distributed manner, and the multiple inner container groups can be used in parallel. This is conducive to broadening the functions and uses of the storage tank system, making the use of the storage tank system more flexible, and can help save project construction land.

[0083] Specifically, by using a method where multiple inner container groups share one outer container, the storage tank system can use one or some inner container groups to discharge liquid, while another or other inner container groups can be used to take in liquid, thereby avoiding the inconvenience caused by the need to take in and take out liquid from the same storage tank system.

[0084] By using a method in which multiple inner container groups share one outer container, the tank system can store different media as required, meeting the need for one tank system to store multiple media.

[0085] It is understood that although the embodiment of the present application provides a storage tank system in which a plurality of inner container groups are arranged in an outer container, and each inner container group can be used independently, it is understood by those skilled in the art that in actual production and application, the plurality of inner container groups in the outer container can also be connected by pipelines to form an integral storage tank for use, depending on the specific situation.

[0086] The above embodiments are merely exemplary descriptions of the structures. The structures in the embodiments are not fixed combination structures. In the absence of structural conflicts, the structures in multiple embodiments can be used in any combination.

[0087] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A cryogenic medium storage tank system, characterized in that: include: An outer container and a plurality of inner container groups arranged in the outer container, each of the inner container groups comprising at least one container body, each of the container bodies being respectively used for storing a cryogenic medium; An interlayer space is formed between the outer container and each of the container bodies, and the interlayer space is used to fill with insulation material; Each of the inner container groups is provided with a liquid phase pipeline and a gas phase pipeline, the liquid phase pipeline is connected to the bottom of each container body of each of the inner container groups, the liquid phase pipeline is arranged in the interlayer space and passes out of the outer container, the gas phase pipeline is connected to the top of each container body of each of the inner container groups, the gas phase pipeline is arranged in the interlayer space and passes out of the outer container.

2. The cryogenic medium storage tank system according to claim 1, characterized in that: Each of the container bodies is a vertically arranged structure; The container bodies of the plurality of inner container groups are arranged parallel to each other and spaced apart; When each of the inner container groups includes more than two container bodies, the more than two container bodies are arranged in parallel and spaced apart from each other.

3. The cryogenic medium storage tank system according to claim 1, characterized in that: Each of the container bodies is supported by a plurality of pillars and arranged in the outer container, the top end of the pillar is connected to the bottom of the container body, the bottom end of the pillar is connected to the bottom of the outer container, and a heat insulation structure is provided on the pillar, and the heat insulation structure is used to prevent the cold of the container body from being transferred to the outer container.

4. The cryogenic medium storage tank system according to claim 3, characterized in that: The pillar includes a first column and a second column, the top end of the first column is connected to the bottom of the container body, the bottom end of the first column is connected to the top end of the second column, the bottom end of the second column is connected to the bottom of the outer container, and the thermal insulation structure is arranged between the first column and the second column.

5. The cryogenic medium storage tank system according to claim 4, characterized in that: The thermal insulation structure includes a first partition, an insulation layer and a second partition. The first partition is fixed to the bottom end of the first column, the second partition is fixed to the top end of the second column, the insulation layer is sandwiched between the first partition and the second partition, and the first partition is relatively fixedly connected to the second partition.

6. The cryogenic medium storage tank system according to claim 5, characterized in that: The thermal insulation structure includes a fastener, a first fixing hole is opened on the first partition, a second fixing hole is opened on the second partition, and a through hole is provided on the thermal insulation layer. The fastener is used to pass through the first fixing hole, the through hole and the second fixing hole in sequence.

7. The cryogenic medium storage tank system according to claim 6, characterized in that: The thermal insulation structure includes a plurality of thermal insulation washers, which are respectively sleeved outside the fasteners and respectively accommodated in the first fixing holes and the second fixing holes. The thermal insulation washers can isolate the heat transfer between the fasteners and the first partition and the second partition.

8. The cryogenic medium storage tank system according to claim 4, characterized in that: At least the first column is a hollow structure, and the interior of the first column is filled with a heat insulating material.

9. The cryogenic medium storage tank system according to claim 1, characterized in that: It also includes a liquid leakage detection structure, which is arranged on the outer container and is used to detect the liquid leakage state in the interlayer space.

10. The cryogenic medium storage tank system according to claim 8, characterized in that: The liquid leakage detection structure comprises a temperature sensor, which is arranged on the side wall of the outer container, and the detection end of the temperature sensor extends into the interlayer space; and / or The liquid leakage detection structure comprises a sampling valve port, which is arranged on the side wall of the outer container and communicated with the interlayer space.

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