An ultralow temperature container system and methods of use and applications thereof

Abstract

The application discloses a kind of ultra-low temperature container systems and its use method and application.The system is in the state of assembly: first liquefier is arranged on the pipeline between the gas phase outlet of main container and liquid phase inlet and outlet, to carry out liquefaction cycle to the cryogenic medium in main container, and first liquefier is used to connect the cryogenic medium cavity outlet and inlet in tank car, to carry out liquefaction cycle to the cryogenic medium in cryogenic medium cavity;Second liquefier outlet is connected with the inlet of auxiliary container, and the outlet of auxiliary container and the inlet of second liquefier are respectively used to be connected with the inlet and outlet of cryogenic screen medium cavity in tank car, to form the liquefaction cycle of first cryogenic screen medium;Cryogenic screen outlet is connected with the inlet of first liquefier or second liquefier, and correspondingly, cryogenic screen inlet is connected with the outlet of first liquefier or second liquefier, to carry out liquefaction cycle to second cryogenic screen medium, the system realizes zero loss of cryogenic medium and cryogenic screen medium when cryogenic liquid is loaded, and reduces the heat insulation cost of system.

Description

Technical Field

[0001] This invention relates to the field of cryogenic liquid storage equipment technology, and in particular to an ultra-low temperature container system and its usage and application. Background Technology

[0002] With economic development and the popularization of cryogenic technology, such as the increasingly widespread application of liquefied gases, the demand for cryogenic containers for storing and transporting liquefied gases is constantly growing across various industries. However, due to the low boiling points of cryogenic media such as liquid helium, liquid hydrogen, liquid nitrogen, liquid oxygen, liquid CO2, and LNG, they are prone to vaporization. Therefore, to ensure the stable storage and transportation of cryogenic media, various methods such as insulation materials, cold shields, and vacuum chambers are needed to maintain the low temperature of the liquid media. Among these, the cold shield is crucial to the insulation performance of the storage container. Properly designed cold shields can significantly reduce heat leakage between the inner and outer tanks of the cryogenic container. The cold shield requires a cryogenic medium to maintain its low temperature; therefore, in the design of the cryogenic container system, the structure of the cold shield and the process flow of the cold shield medium must be considered simultaneously with the cryogenic container. Modular system assembly can ensure the insulation and cold preservation effect of the cryogenic container. Summary of the Invention

[0003] In the prior art, when loading cryogenic media, the long loading pipeline causes thermal disturbance to the existing cryogenic media in the cryogenic media chamber inside the tank truck. This disturbance increases heat leakage and reduces the overall insulation effect of the cryogenic container system. Furthermore, the prior art lacks a circulation system for recovering the cold shield medium in the main container's cold shield. These issues can easily lead to the loss of cryogenic media and cold shield medium during loading, thereby increasing loading costs.

[0004] In view of the above problems, the present invention is proposed to provide an ultra-low temperature container system and its method of use and application that overcomes or at least partially solves the above problems.

[0005] In a first aspect, embodiments of the present invention provide an ultra-low temperature container system, comprising: a main container, a secondary container, a first liquefier, and a second liquefier, wherein the system is in an assembled state as follows:

[0006] A cold shield is provided between the inner and outer tanks of the main container to cool the cryogenic medium inside the main container.

[0007] The first liquefier is installed on the pipeline between the gas phase outlet and the liquid phase inlet and outlet of the main container to liquefy and circulate the cryogenic medium in the main container. The first liquefier is also used to connect the outlet and inlet of the cryogenic medium chamber in the tank truck to liquefy and circulate the cryogenic medium in the cryogenic medium chamber.

[0008] The outlet of the second liquefier is connected to the inlet of the auxiliary container. The outlet of the auxiliary container and the inlet of the second liquefier are respectively connected to the inlet and outlet of the cold shield medium cavity in the tank truck to form a liquefaction cycle for the first cold shield medium.

[0009] The cold screen outlet is connected to the inlet of the first liquefier or the inlet of the second liquefier, and correspondingly, the cold screen inlet is connected to the outlet of the first liquefier or the outlet of the second liquefier, so as to liquefy and circulate the medium in the second cold screen.

[0010] The liquid phase outlet of the main container is connected to the inlet of the cryogenic medium chamber to input the cryogenic medium in the main container into the cryogenic medium chamber.

[0011] In some optional embodiments, the system further includes: a cryogenic medium storage tank;

[0012] The cryogenic medium storage tank is connected to the first liquefier, and a first control valve is provided on the connecting pipeline between the two to control the flow rate of the cryogenic medium in the cryogenic medium storage tank into the first liquefier.

[0013] In some optional embodiments, the system further includes: a cold shield medium storage tank;

[0014] The cold shield medium storage tank is connected to the second liquefier, and a second control valve is provided on the connecting pipeline between the two to control the flow rate of the cold shield medium in the first cold shield medium storage tank into the second liquefier.

[0015] In some optional embodiments, the system further includes: a tank truck;

[0016] The tanker is equipped with a cryogenic medium chamber and a cold shield medium chamber.

[0017] The cryogenic medium chamber is used to load the cryogenic medium, and the inlet of the cryogenic medium chamber is connected to the outlet of the first liquefier and the inlet and outlet of the main container, and the outlet of the cryogenic medium chamber is connected to the inlet of the first liquefier.

[0018] The cold screen medium cavity is used to load the first cold screen medium, and the inlet of the cold screen medium cavity is connected to the outlet of the main container, while the outlet of the cold screen medium cavity is connected to the inlet of the second liquefier.

[0019] In some optional embodiments, a liquid phase inlet / outlet valve is provided on the liquid phase inlet / outlet pipeline of the main container to control the flow rate of the liquid phase cryogenic medium entering or leaving the main container, and a gas phase inlet valve is provided on the gas phase outlet end of the main container to control the flow rate of the gas phase cryogenic medium exiting the main container.

[0020] In some optional embodiments, inlet control valves are respectively installed on the inlet end pipes of the cryogenic medium cavity, the cold shield medium cavity, the second liquefier, and the auxiliary container to control the flow rate of the cryogenic medium entering the cryogenic medium cavity and the second liquefier, as well as the flow rate of the first cold shield medium entering the auxiliary container and the cold shield medium cavity.

[0021] In some optional embodiments, outlet control valves are respectively provided on the outlet end pipelines of the cryogenic medium cavity, the cold shield medium cavity, the second liquefier, and the auxiliary container to control the flow rate of the cryogenic medium flowing out of the cryogenic medium cavity and the second liquefier, and the flow rate of the first cold shield medium flowing out of the auxiliary container and the cold shield medium cavity.

[0022] Secondly, embodiments of the present invention provide a method for using the above-mentioned cryogenic container system, including:

[0023] The second cold screen medium flows out from the cold screen outlet, is liquefied by the first liquefier, and then flows into the cold screen from the cold screen inlet; or the second cold screen medium flows out from the cold screen outlet, is liquefied by the second liquefier, flows into the auxiliary container, and then flows out from the auxiliary container outlet and into the cold screen from the cold screen inlet.

[0024] The gaseous cryogenic medium flows out from the gas phase outlet of the main container and / or the cryogenic medium cavity outlet, is liquefied by the first liquefier, and then flows into the main container and / or the cryogenic medium cavity.

[0025] After the second cold shield medium flows out of the cold shield medium cavity outlet, it is liquefied by the second liquefier and flows into the auxiliary container. Then, it flows out of the auxiliary container outlet and into the cold shield medium cavity through the cold shield medium cavity inlet.

[0026] In some optional embodiments, the method further includes:

[0027] The cryogenic medium flows out of the cryogenic medium storage tank, passes through the first liquefier, and then flows into the cryogenic medium cavity and / or the main container.

[0028] In some optional embodiments, the method further includes:

[0029] The second cold shield medium flows out of the cold shield medium storage tank, passes through the second liquefier and the auxiliary container, and then flows into the cold shield medium cavity through the cold shield medium cavity inlet.

[0030] Thirdly, embodiments of the present invention provide an application of the above-mentioned cryogenic container system in the process of loading cryogenic liquids onto trucks.

[0031] The beneficial effects of the above-described technical solutions provided in the embodiments of the present invention include at least the following:

[0032] The cryogenic container system, its usage method, and its application provided in this invention embodiment include: a cold shield installed between the inner and outer tanks of the main container to cool the cryogenic medium inside the main container; a first liquefier installed on the pipeline between the gas phase outlet and the liquid phase inlet / outlet of the main container to liquefy and circulate the cryogenic medium inside the main container; the first liquefier is connected to the outlet and inlet of the cryogenic medium cavity inside the tank truck to liquefy and circulate the cryogenic medium inside the cryogenic medium cavity; the outlet of the second liquefier is connected to the inlet of the auxiliary container; the outlet of the auxiliary container and the inlet of the second liquefier are respectively connected to the inlet and outlet of the cold shield medium cavity inside the tank truck to form a liquefaction circulation of the first cold shield medium; the cold shield outlet is connected to the inlet of the first liquefier or the inlet of the second liquefier, and correspondingly, the cold shield inlet is connected to the outlet of the first liquefier or the outlet of the second liquefier to liquefy and circulate the second cold shield medium; the liquid phase outlet of the main container is connected to the inlet of the cryogenic medium cavity to input the cryogenic medium inside the main container into the cryogenic medium cavity. In this system, the circulation of the first cold shield medium keeps the cold shield at a low temperature, thereby cooling the cryogenic medium in the main container to prepare it for tank loading and transportation. Furthermore, this invention introduces the gaseous cryogenic medium discharged from the main container's gas outlet and the cryogenic medium cavity outlet in the tank truck, the first cold shield medium discharged from the cold shield medium cavity outlet, and the second cold shield medium discharged from the cold shield into the first liquefier and / or the second liquefier for cooling. This reduces energy loss in the cryogenic system, simultaneously enabling the recycling of the second cold shield medium, reducing the cooling cost of the main container, avoiding the environmental impact of the first cold shield medium's emissions, improving raw material utilization, saving resources, and enhancing production economic efficiency.

[0033] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0034] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0035] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0036] Figure 1 This is a schematic diagram of the cryogenic container system in Embodiment 1 of the present invention;

[0037] Figure 2 This is a schematic diagram of the cryogenic container system in Embodiment 2 of the present invention;

[0038] Explanation of reference numerals in the attached figures:

[0039] 110-First main container, 120-Second main container, 20-First liquefier, 30-Cryogenic medium chamber, 40-Cold shield medium chamber, 50-Subsidiary container, 60-Second liquefier, 71-First cold shield, 72-Second cold shield, 80-Tank truck;

[0040] 001-First control valve, 002-First outlet valve, 003-First inlet valve, 004-First liquid phase inlet / outlet valve, 005-First gas phase outlet valve, 006-Second inlet valve, 007-Second outlet valve, 008-Second control valve, 009-Third outlet valve, 010-Third inlet valve, 011-Fourth outlet valve, 012-Fourth inlet valve, 013-Fifth inlet valve, 014-Fifth outlet valve, 015-Second liquid phase inlet / outlet valve, 016-Second gas phase outlet valve, 017-Sixth outlet valve, 018-Sixth inlet valve. Detailed Implementation

[0041] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0042] The inventors have discovered that, in the prior art, when loading cryogenic media onto a vehicle, the long loading pipeline causes thermal disturbance to the existing cryogenic media in the cryogenic media cavity when the cryogenic media enters. This disturbance increases heat leakage in the system, thereby reducing the overall insulation effect of the cryogenic container system. Furthermore, the prior art lacks a circulation system for recovering the cold shield media in the main container's cold shield. These issues can easily lead to the loss of both the cryogenic media and the second cold shield media during loading, thus increasing the loading cost of the cryogenic media.

[0043] Furthermore, minimizing the storage time of cryogenic media, shortening pipeline distances, and reducing media disturbances during loading can significantly reduce heat loss and ensure the stable operation of the cryogenic container system during loading.

[0044] To address the above problems, embodiments of the present invention provide an ultra-low temperature container system, such as... Figure 1 and Figure 2 As shown, the system includes a main container, a secondary container 50, a first liquefier 20, and a second liquefier 60. The system is assembled as follows:

[0045] A cold shield is installed between the inner and outer tanks of the main container to cool the cryogenic medium inside the main container;

[0046] The first liquefier 20 is installed on the pipeline between the gas phase outlet and the liquid phase inlet and outlet of the main container to liquefy and circulate the cryogenic medium in the main container. The first liquefier 20 is also used to connect the outlet and inlet of the cryogenic medium chamber in the tank truck to liquefy and circulate the cryogenic medium in the cryogenic medium chamber.

[0047] The outlet of the second liquefier is connected to the inlet of the auxiliary container. The outlet of the auxiliary container and the inlet of the second liquefier are respectively connected to the inlet and outlet of the cold shield medium cavity in the tank truck to form a liquefaction cycle for the first cold shield medium.

[0048] The cold screen outlet is connected to the inlet of the first liquefier or the inlet of the second liquefier, and correspondingly, the cold screen inlet is connected to the outlet of the first liquefier or the outlet of the second liquefier, so as to liquefy and circulate the medium in the second cold screen.

[0049] The liquid outlet of the main container is connected to the inlet of the cryogenic medium chamber to introduce the cryogenic medium from the main container into the cryogenic medium chamber.

[0050] The system is equipped with a first liquefier 20 and a second liquefier 60 to complete the liquefaction cycle of the cryogenic medium, the first cold shield medium and the second cold shield medium in the system. This realizes the recycling of the second cold shield medium in the main container of the cryogenic container system, reduces insulation costs, and avoids the impact on the surrounding environment when the second cold shield medium is discharged into the atmosphere.

[0051] In this system, one or more main containers can be set, such as Figure 1 There is one, namely the first main container 110, such as Figure 2 There are two main containers: a first main container 110 and a second main container 120. The number of cold screens is set accordingly to correspond to the number of main containers; for example... Figure 1 When the system includes the first main container 110, a first cold screen 71 is set up; such as Figure 2 When the system includes a first main container 110 and a second main container 120, a first cold screen 71 and a second cold screen 72 are provided.

[0052] The system described in this embodiment may further include: a cryogenic medium storage tank (not shown in the figure);

[0053] The cryogenic medium storage tank is connected to the first liquefier 20, and a first control valve 001 is installed on the connecting pipeline between the two to control the flow rate of the cryogenic medium from the cryogenic medium storage tank into the first liquefier 20. During the loading of the cryogenic medium, if the loading pipeline is long, the cryogenic medium entering the cryogenic medium cavity 30 inside the tank truck 80 will cause thermal disturbance to the existing cryogenic medium in the cryogenic medium cavity. This disturbance will increase the heat leakage of the system and reduce the overall insulation effect of the cryogenic container system. In the system of this embodiment, the cryogenic medium in the cryogenic medium storage tank can directly flow into the cryogenic medium cavity for loading the cryogenic medium into the first liquefier 20, shortening the loading pipeline of the cryogenic medium and improving the overall insulation effect of the system.

[0054] The system described in this embodiment may further include: a cold shield medium storage tank (not shown in the figure);

[0055] The cold shield medium storage tank is connected to the second liquefier 60, and a second control valve 008 is installed on the connecting pipeline between the two to control the flow rate of the cold shield medium in the first cold shield medium storage tank into the second liquefier 60. When the flow rate of the first cold shield medium in the system is insufficient or it is necessary to increase the flow rate of the first cold shield medium, the flow rate of the first cold shield medium can be supplemented into the system through the cold shield medium storage tank under the control of the second control valve 008.

[0056] Optionally, the system described in this embodiment of the invention may further include: a tank truck 80;

[0057] The tanker is equipped with a cryogenic medium chamber 30 and a cold shield medium chamber 40;

[0058] The cryogenic medium chamber 30 is used to load cryogenic medium, and the inlet of the cryogenic medium chamber is connected to the outlet of the first liquefier and the inlet and outlet of the main container, while the outlet of the cryogenic medium chamber is connected to the inlet of the first liquefier.

[0059] The cold shield medium cavity 40 is used to load the first cold shield medium, and the inlet of the cold shield medium cavity is connected to the outlet of the main container, while the outlet of the cold shield medium cavity is connected to the inlet of the second liquefier 60.

[0060] Optionally, liquid phase inlet and outlet valves are installed on the liquid phase inlet and outlet pipelines of the main container to control the flow rate of the liquid phase cryogenic medium entering or leaving the main container, and a gas phase outlet valve is installed on the gas phase outlet of the main container to control the flow rate of the gas phase cryogenic medium exiting the main container. When the liquid phase inlet and outlet valves are closed, the cryogenic medium entering the first liquefier 20 from the cryogenic medium storage tank bypasses the main container and flows directly into the cryogenic medium cavity for loading. This saves on the loading pipeline of the cryogenic medium cavity and avoids the thermal disturbance of the existing cryogenic medium in the cryogenic medium cavity 30 when the loading pipeline is too long. This reduces the heat loss of the cryogenic container system and improves the overall insulation effect. When the flow rate of the cryogenic medium in the first liquefier 20 is insufficient to meet the loading flow rate of the cryogenic medium, the cryogenic medium in the main container can be used for loading.

[0061] It should be noted that the number of liquid phase inlet / outlet valves and gas phase outlet valves in this system corresponds to the number of main containers in the system. Figure 1 When a main container, namely main container 110, is provided, the system is equipped with a first liquid phase inlet / outlet valve 004 and a first gas phase outlet valve 005; for example Figure 2 When the system has two main containers, namely the first main container 110 and the second main container 120, the system is equipped with a first liquid phase inlet / outlet valve 004, a first gas phase outlet valve 005, a second liquid phase inlet / outlet valve 015, and a second gas phase outlet valve 016.

[0062] In an optional embodiment, inlet control valves are respectively installed on the inlet end pipes of the cryogenic medium chamber 30, the cold shield medium chamber 40, the second liquefier 60, and the auxiliary container 50 to control the flow rate of the cryogenic medium entering the cryogenic medium chamber 30 and the second liquefier 60, as well as the flow rate of the first cold shield medium entering the auxiliary container 50 and the cold shield medium chamber 40.

[0063] An outlet control valve is installed on the outlet end pipelines of the cryogenic medium chamber 30, the cold shield medium chamber 40, the second liquefier 60, and the auxiliary container 50, respectively, to control the flow rate of the cryogenic medium flowing out of the cryogenic medium chamber 30 and the second liquefier 60, and the flow rate of the first cold shield medium flowing out of the auxiliary container 20 and the cold shield medium chamber 40.

[0064] Based on the same inventive concept, embodiments of the present invention provide a method for using an ultra-low temperature container system, including:

[0065] The second cold screen medium flows out from the cold screen outlet, is liquefied by the first liquefier 20, and then flows into the cold screen from the cold screen inlet; or the second cold screen medium flows out from the cold screen outlet, is liquefied by the second liquefier, flows into the auxiliary container, and then flows out from the auxiliary container outlet and into the cold screen from the cold screen inlet.

[0066] The gaseous cryogenic medium flows out from the gas phase outlet of the main container and / or the cryogenic medium cavity outlet, is liquefied by the first liquefier 20, and then flows into the main container and / or the cryogenic medium cavity.

[0067] After the second cold shield medium flows out of the cold shield medium cavity outlet, it is liquefied by the second liquefier and flows into the auxiliary container. Then, it flows out of the auxiliary container outlet and into the cold shield medium cavity through the cold shield medium cavity inlet.

[0068] In some optional embodiments, the method of using the above system further includes:

[0069] The cryogenic medium flows out of the cryogenic medium storage tank, passes through the first liquefier 20, and then flows into the cryogenic medium cavity and / or the main container. That is, the liquid flowing from the cryogenic medium storage tank into the first liquefier 20 can flow directly into the cryogenic medium cavity 30 for loading of the cryogenic medium, or it can flow into the main container for storage, or it can flow into the main container and the cryogenic medium cavity at the same time.

[0070] The above usage methods may also include:

[0071] The second cold shield medium flows out of the cold shield medium storage tank, passes through the second liquefier 60 and the auxiliary container 50, and then flows into the cold shield medium cavity 40 through the cold shield medium cavity inlet.

[0072] It should be noted that in practical applications, the second cold shield medium in the cryogenic container system can be the same material as the first cold shield medium, and the second cold shield medium can also be the same material as the cryogenic medium. The main container used to store the cryogenic medium can be one or more. Those skilled in the art can choose according to their needs, and the embodiments of the present invention do not make specific limitations in this regard.

[0073] The following is combined Figure 1 and Figure 2 Two different scenarios are illustrated by way of example for this cryogenic vessel system and its usage:

[0074] Example 1

[0075] This embodiment uses the example of an ultra-low temperature container system including a main container and the second cold shield medium being the same material as the first cold shield medium; it is assumed that in this embodiment, the cryogenic medium is liquid helium, and the first and second cold shield media are liquid nitrogen.

[0076] like Figure 1 In this embodiment, the cryogenic container system includes a first main container 110, a secondary container 50, a first liquefier 20, a second liquefier 60, a cryogenic medium cavity 30, and a cold shield medium cavity 40, wherein a first cold shield 71 is provided in the first main container 110.

[0077] In this system, the cryogenic medium storage tank is connected to the first liquefier 20, and a first control valve 001 is installed on the connecting pipeline between the two. The first control valve 001 can control the feed flow of liquid helium into the first liquefier 20 according to process requirements. When the first control valve 001 is completely closed, the cryogenic system only liquefies and circulates helium in the first main container 110 and the cryogenic medium cavity in the tank truck. The first liquefier 20 is installed on the pipeline between the inlet and outlet of the first main container 110 and the cryogenic medium chamber 30. Specifically, the gas phase outlet of the first main container 110 and the outlet of the cryogenic medium chamber 30 are respectively connected to the inlet of the first liquefier 20 to allow helium gas in the first main container 110 and the cryogenic medium chamber 30 to enter the first liquefier 20 for liquefaction. The liquid phase inlet and outlet of the first main container 110 and the inlet of the cryogenic medium chamber 30 are respectively connected to the outlet of the first liquefier 20 to allow liquid helium in the first liquefier 20 to flow into the first main container 110 and / or the cryogenic medium chamber 30. A first outlet valve 002 is installed at the outlet end of the first liquefier 20. The first outlet valve 002 is used to control the amount of liquid helium discharged from the first liquefier 20; the inlet end of the first liquefier 20 is provided with a first inlet valve 003, which is used to control the flow rate of helium entering the first liquefier 20; the liquid phase inlet and outlet ends of the first main container 110 are provided with a first liquid phase inlet and outlet valve 004, and the gas phase outlet end is provided with a first gas phase outlet valve 005 to control the discharge flow rate of helium; the inlet end of the cryogenic medium chamber 30 is provided with a second inlet valve 006 to control the flow rate and velocity of liquid helium entering the cryogenic medium chamber, and the outlet end is provided with a second outlet valve 007 to control the flow rate and flow rate of helium leaving the cryogenic medium chamber.

[0078] The circulation process of the cryogenic medium in the system of this embodiment is as follows: Helium flowing out from the outlet of the first main container 110 and the outlet of the cryogenic medium cavity 30 flows into the first liquefier 20 through the inlet of the first liquefier for liquefaction. The liquid helium in the first liquefier 20 flows out through the outlet of the first liquefier and then flows into the cryogenic medium cavity 30 and / or the first main container 110.

[0079] Optionally, in this system, the cold shield medium storage tank is connected to the second liquefier 60, and a second control valve 008 is installed on the connecting pipeline between the two. The second control valve 008 controls the flow rate of the cold shield medium in the cold shield medium storage tank into the second liquefier 60. When the liquid nitrogen in the system is insufficient or the liquid nitrogen flow rate needs to be increased, liquid nitrogen or nitrogen gas can be replenished from the cold shield medium storage tank. The first cold shield 71 is equipped with a third outlet valve 009 at its outlet end, which is used to control the flow rate of liquid nitrogen and / or nitrogen gas discharged from the cold shield. The first cold shield is equipped with a third inlet valve 010 at its inlet end, which is used to control the flow rate of liquid nitrogen entering the cold shield. The auxiliary container is equipped with a fourth inlet valve 012 and a fourth outlet valve 011 at its inlet and outlet ends to control the flow rate and velocity of liquid nitrogen entering and exiting the second liquefier. The cold shield medium cavity is equipped with a fifth inlet valve 013 at its inlet end, which is used to control the flow rate and velocity of liquid nitrogen entering the cold shield medium cavity. The cold shield medium cavity is equipped with a fifth outlet valve 014 at its outlet end, which is used to control the flow rate and velocity of nitrogen gas leaving the cryogenic medium cavity.

[0080] The circulation process of liquid nitrogen as the cooling medium in this embodiment is as follows: nitrogen gas and / or liquid nitrogen flowing out of the first cooling screen and nitrogen gas flowing out of the cooling screen medium cavity flow into the second liquefier 60 for cooling. The cooled liquid helium flows into the secondary container 50 from the inlet, and then the liquid nitrogen flowing out of the secondary container flows into the cooling screen medium cavity 40 and the first cooling screen 71 respectively.

[0081] In this embodiment, the first gas phase outlet valve 005, the second outlet valve 007, the fourth inlet valve 012, and the fifth outlet valve 014 all have an overpressure emergency venting function, which can vent pressurized gas or liquid in an emergency to avoid deformation or leakage of connecting pipelines under overpressure conditions.

[0082] Example 2

[0083] The difference between this embodiment and Embodiment 1 is that the system in this embodiment includes two main containers for storing the cryogenic medium, namely a first main container 110 and a second main container 120. Correspondingly, a first cold screen 71 and a second cold screen 72 are provided. In this embodiment, the medium of the second cold screen and the cryogenic medium are the same substance. For the similarities between the system described in Embodiment 2 and Embodiment 1, please refer to the relevant description in Embodiment 1, which will not be repeated here. Assuming that the cryogenic medium and the second cold screen medium in this embodiment are liquid helium, and the first cold screen medium is liquid nitrogen.

[0084] In this embodiment, the outlet ends of the first main container 110 and the second main container 120 are respectively provided with a first gas phase outlet valve 005 and a second gas phase outlet valve 016. Correspondingly, their liquid phase inlet and outlet ends are respectively provided with a first liquid phase inlet and outlet valve 004 and a second liquid phase inlet and outlet valve 015. The outlet ends of the first cold screen and the second cold screen are respectively provided with a third outlet valve 009 and a sixth outlet valve 017, and their inlet ends are provided with a third inlet valve 010 and a sixth inlet valve 018. In this system, the outlets of the first cold screen 71 and the second cold screen 72, the gas phase outlets of the first main container 110 and the second main container 120, and the outlet of the cryogenic medium cavity 30 are respectively connected to the inlet of the first liquefier 20, so that the helium in the cold screen, the main container, and the cryogenic medium cavity enters the first liquefier 20 for liquefaction. Correspondingly, the inlets of the first cold screen 71 and the second cold screen 72, the liquid phase inlet and outlet of the first main container 110 and the second main container 120, and the inlet of the cryogenic medium cavity 30 are respectively connected to the outlet of the first liquefier 20.

[0085] The circulation process of liquid helium in this embodiment is as follows: Helium flowing out from the outlets of the first main container 110 and the second main container 120, and helium and / or liquid helium flowing out from the first cold screen 71 and the second cold screen 72, merge in the pipeline and then flow into the first liquefier 20 through the inlet for liquefaction. Helium in the cryogenic medium cavity 30 flows out through the outlet of the cryogenic medium cavity and then enters the first liquefier 20 for liquefaction. The liquefied liquid helium in the first liquefier 20 flows through the pipeline into at least one of the first main container 110, the second main container 120, the cryogenic medium cavity 30, the first cold screen 71, and the second cold screen 72 to complete the circulation of the cryogenic medium in this embodiment.

[0086] In this embodiment, the circulation process of the first cold screen medium is as follows: nitrogen gas discharged from the outlet of the cold screen medium 40 enters the second liquefier 60, is liquefied, and then enters the sub-container 50. Liquid helium flowing out from the outlet of the sub-container 50 flows into the cold screen medium cavity 40 through the inlet of the cold screen medium cavity, thereby completing the circulation of the first cold screen medium.

[0087] It should be noted that the above embodiments 1 and 2 are merely illustrative examples of the present invention. In practical applications, the specific types of materials of the cryogenic medium, the first cold shield medium, and the second cold shield medium, as well as the number of main containers included in the cryogenic container system, can be selected. The embodiments of the present invention do not impose specific limitations on this.

[0088] On the other hand, embodiments of the present invention provide an application of the above-mentioned cryogenic container system in the process of loading cryogenic liquids onto trucks.

[0089] The cryogenic container system provided in this invention includes: a main container for storing cryogenic media, a first liquefier 20 for reliquefying the gaseous cryogenic media in the main container, a secondary container 50 for providing a first cold shield medium, a pipeline and valve instrumentation system for connecting and controlling the main container and the secondary container 50, a second cold shield medium recovery and utilization system, and a loading and transportation system. An insulating jacket is formed between the inner and outer tanks of the main container, with an insulating cold shield disposed in the middle of the jacket. The secondary container stores the first cold shield medium, which is input into the cold shield in the main container and / or the cold shield medium cavity in the tank truck through the pipeline and valve instrumentation system. This system recovers and cools the second cold shield medium from the cold shield outlet of the main container for reuse. The loading and transportation system ultimately realizes the loading and transportation of the cryogenic media.

[0090] This system can be used for loading cryogenic liquids onto trucks. During the loading process, the cold shield cools the cryogenic medium in the main container to keep it at a low temperature. The medium in the second cold shield can be liquefied through either the first or second liquefier, thus enabling the recycling of the second cold shield medium during the loading process. This saves on the loading cost of cryogenic liquids and increases economic benefits.

[0091] This cryogenic container system improves insulation and reduces energy consumption by comprehensively optimizing and controlling the cryogenic container, cold shield system, and loading system. It also enhances the stability of the cryogenic medium preparation and storage processes. A connecting pipeline between the cryogenic medium storage tank and the cryogenic medium chamber on the tanker allows for loading of the cryogenic medium from the storage tank, shortening the loading pipeline and reducing excessive pipeline length and thermal disturbance of the cryogenic medium within the container. This further reduces heat leakage and improves the overall insulation performance of the cryogenic container system. Furthermore, the system includes a first liquefier and a second liquefier, enabling the circulation of materials within the entire cryogenic container system. This maintains the cold insulation effect of the liquid throughout the system, ensuring the stability of the entire process system and reducing insulation costs.

[0092] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process may be rearranged without departing from the scope of this disclosure. The appended method claims provide elements of various steps in an exemplary order and are not intended to limit the scope to the specific order or hierarchy described.

[0093] In the detailed description above, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features in a single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, with each claim representing a separate preferred embodiment of the invention.

[0094] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0095] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A cryogenic container system, characterized in that, The system includes a main container, a secondary container, a first liquefier, a second liquefier, a cryogenic medium storage tank, a cold shield medium storage tank, and tank trucks. In its assembled state: A cold shield is provided between the inner and outer tanks of the main container to cool the cryogenic medium inside the main container. The first liquefier is installed on the pipeline between the gas phase outlet and the liquid phase inlet and outlet of the main container to liquefy and circulate the cryogenic medium in the main container. The first liquefier is also used to connect the outlet and inlet of the cryogenic medium chamber in the tank truck to liquefy and circulate the cryogenic medium in the cryogenic medium chamber. The outlet of the second liquefier is connected to the inlet of the auxiliary container. The outlet of the auxiliary container and the inlet of the second liquefier are respectively connected to the inlet and outlet of the cold shield medium cavity in the tank truck to form a liquefaction cycle for the first cold shield medium. The cold screen outlet is connected to the inlet of the first liquefier or the inlet of the second liquefier, and correspondingly, the cold screen inlet is connected to the outlet of the first liquefier or the outlet of the second liquefier, so as to liquefy and circulate the medium in the second cold screen. The liquid phase inlet and outlet of the main container are used to connect to the inlet of the cryogenic medium cavity so as to input the cryogenic medium in the main container into the cryogenic medium cavity; The cryogenic medium storage tank is connected to the first liquefier, and a first control valve is provided on the connecting pipeline between the two to control the flow rate of the cryogenic medium in the cryogenic medium storage tank into the first liquefier. The cold shield medium storage tank is connected to the second liquefier, and a second control valve is provided on the connecting pipeline between the two to control the flow rate of the cold shield medium in the cold shield medium storage tank into the second liquefier. The tanker is equipped with a cryogenic medium chamber and a cold shield medium chamber. The cryogenic medium chamber is used to load the cryogenic medium, and the inlet of the cryogenic medium chamber is connected to the outlet of the first liquefier and the liquid phase inlet and outlet of the main container, and the outlet of the cryogenic medium chamber is connected to the inlet of the first liquefier. The cold screen medium cavity is used to load the first cold screen medium, and the inlet of the cold screen medium cavity is connected to the outlet of the main container, while the outlet of the cold screen medium cavity is connected to the inlet of the second liquefier.

2. The system as described in claim 1, characterized in that, The main container is equipped with liquid phase inlet and outlet valves on the liquid phase inlet and outlet pipelines to control the flow rate of the liquid phase cryogenic medium entering or leaving the main container, and the main container is equipped with a gas phase outlet valve on the gas phase outlet end to control the flow rate of the gas phase cryogenic medium exiting the main container.

3. The system as described in claim 2, characterized in that, Inlet control valves are respectively installed on the inlet end pipelines of the cryogenic medium chamber, the cold shield medium chamber, the second liquefier, and the auxiliary container to control the flow rate of the cryogenic medium entering the cryogenic medium chamber and the second liquefier, as well as the flow rate of the first cold shield medium entering the auxiliary container and the cold shield medium chamber.

4. The system as described in any one of claims 1-3, characterized in that, The outlet control valves are respectively installed on the outlet end pipelines of the cryogenic medium chamber, the cold shield medium chamber, the second liquefier, and the auxiliary container to control the flow rate of the cryogenic medium flowing out of the cryogenic medium chamber and the second liquefier, and the flow rate of the first cold shield medium flowing out of the auxiliary container and the cold shield medium chamber.

5. A method of using the cryogenic vessel system as described in any one of claims 1-4, comprising: The second cold screen medium flows out from the cold screen outlet, is liquefied by the first liquefier, and then flows into the cold screen from the cold screen inlet; or the second cold screen medium flows out from the cold screen outlet, is liquefied by the second liquefier, flows into the auxiliary container, and then flows out from the auxiliary container outlet and into the cold screen from the cold screen inlet. The gaseous cryogenic medium flows out from the gas phase outlet of the main container and / or the cryogenic medium cavity outlet, is liquefied by the first liquefier, and then flows into the main container and / or the cryogenic medium cavity. After the first cold shield medium flows out of the cold shield medium cavity outlet, it is liquefied by the second liquefier and flows into the auxiliary container. Then, it flows out of the auxiliary container outlet and into the cold shield medium cavity inlet.

6. The method as described in claim 5, characterized in that, Also includes: The cryogenic medium flows out of the cryogenic medium storage tank, passes through the first liquefier, and then flows into the cryogenic medium cavity and / or the main container.

7. The method as described in any one of claims 5 or 6, characterized in that, Also includes: The first cold shield medium flows out of the cold shield medium storage tank, passes through the second liquefier and the auxiliary container, and then flows into the cold shield medium cavity through the cold shield medium cavity inlet.

8. The application of a cryogenic container system as described in any one of claims 1-4 in the loading process of cryogenic liquids.

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