Storage device

Abstract

A storage device, comprising: a storage tank (100) for storing a cryogenic liquefied gas; a housing portion (200), comprising a housing body (210) and a connecting member (220), wherein an accommodating space is formed in the housing body (210), the storage tank (100) is located in the accommodating space, one end of the connecting member (220) is connected to the housing body (210), and the other end of the connecting member (220) is connected to the storage tank (100); and a cooling portion (300), the cooling portion (300) comprising a cooling pipe (310), wherein the cooling pipe (310) is coiled around the exterior of the storage tank (100) and the connecting member (220), and a cooling medium is contained in the cooling pipe (310).

Description

Savings devices

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 2024118243800, filed on December 12, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of gas storage technology, and more particularly to a storage device. Background Technology

[0004] Cryogenic liquefied gases are typically stored in tanks and released through pipelines during use. Due to the significant temperature difference between the ambient environment and the inside of the cylinders, heat from the outside environment can transfer to the tank, causing the cryogenic liquefied gas to vaporize upon absorbing heat, leading to a pressure increase inside the tank. The vaporized cryogenic liquefied gas will automatically release once it exceeds the pressure limit set by the safety valve, which is detrimental to the long-term storage of cryogenic liquefied gases. Summary of the Invention

[0005] This disclosure aims to address at least one of the technical problems existing in the related art.

[0006] In view of the above, a storage device is provided according to an embodiment of the present disclosure, comprising: a storage tank for storing cryogenic liquefied gas; a housing portion including a housing body and a connector, the housing body forming an accommodating space, the storage tank being located in the accommodating space, one end of the connector being connected to the housing body, and the other end of the connector being connected to the storage tank; and a cooling portion including a cooling pipe, the cooling pipe being wound around the outside of the storage tank and the connector, the cooling pipe containing a cooling medium.

[0007] Other advantages, objectives and features of the present disclosure will become apparent in part from the following description, and in part will be understood by those skilled in the art through study and practice of the present disclosure. Attached Figure Description

[0008] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0009] Figure 1 is a schematic structural diagram of a storage device according to some embodiments of the present disclosure;

[0010] Figure 2 is a schematic structural diagram of region A of the storage device shown in Figure 1;

[0011] Figure 3 is a schematic structural diagram of the cooling pipes on the gas phase side and liquid phase side of a storage tank according to some embodiments of the present disclosure.

[0012] Figure 4 is a schematic structural diagram of the cooling pipe at the end of a storage tank according to some embodiments of the present disclosure.

[0013] Figure 5 is a schematic structural diagram of the cooling pipes at the end of the storage tank shown in Figure 4 from another perspective.

[0014] The correspondence between the reference numerals and the component names is as follows:

[0015] 100. Storage tank; 200. Shell section; 300. Cooling section;

[0016] 210. Housing body; 220. Connecting parts;

[0017] 310. Cooling piping; 320. Insulation layer; 330. Refrigerant tank;

[0018] 410. First delivery pipeline; 420. First valve body;

[0019] 510. Second delivery pipeline; 520. Second valve body;

[0020] 610. Heat exchanger; 620. Vaporizer;

[0021] 1001, Gas phase side; 1002, Liquid phase side. Embodiments of the present invention

[0022] 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.

[0023] Figure 1 is a schematic structural diagram of a savings device according to some embodiments of the present disclosure; Figure 2 is a schematic structural diagram of region A of the savings device shown in Figure 1.

[0024] In some examples, as shown in Figures 1 and 2, a storage device is provided according to an embodiment of the present disclosure, comprising: a storage tank 100 for storing cryogenic liquefied gas; a housing portion 200 including a housing body 210 and a connector 220, the housing body 210 forming an accommodating space, the storage tank 100 being located in the accommodating space, one end of the connector 220 being connected to the housing body 210, and the other end of the connector 220 being connected to the storage tank 100; and a cooling portion 300 including a cooling pipe 310, the cooling pipe 310 being wound around the outside of the storage tank 100 and the connector 220, the cooling pipe 310 containing a cooling medium.

[0025] A storage device according to an embodiment of this disclosure includes a storage tank 100, a housing portion 200, and a cooling portion 300. The housing portion 200 includes a housing body 210 and a connector 220. The cooling portion 300 includes cooling pipes 310. The storage tank 100 is located within an accommodating space formed by the housing body 210. The storage tank 100 is connected to the housing body 210 via the connector 220, allowing the storage tank 100 to be fixed relative to the housing body 210. The cooling pipes 310 are coiled around the outside of the storage tank 100 and the connector 220. Therefore, in practical applications, the storage tank 100 stores cryogenic liquefied gas, and the cooling pipes 310 contain the cooling medium. Thus, the cooling pipes 310 can form a cold screen on the outside of the storage tank 100, absorbing the heat transferred from the external environment into the storage space, thereby reducing the heat transfer between the external environment and the storage tank 100. This can prolong the heating time of the storage tank 100, reduce the vaporization efficiency of the cryogenic liquefied gas, and thus prolong the storage time of the cryogenic liquefied gas. In addition, the cooling pipes 310 can also cool the connector 220, placing the connector 220 in a low-temperature environment. It can also absorb the heat transferred from the external environment to the connector 220, which helps to reduce the heating rate of the connector 220, thereby weakening the influence of the connector 220 on the temperature of the storage tank 100 and further extending the storage time of the cryogenic liquefied gas.

[0026] It should be noted that, since there is often a large temperature difference between the storage tank 100 storing cryogenic liquefied gas and the external environment in which the storage device is located, heat from the external environment can pass through the shell body 210 and be transferred to the storage tank 100 through the internal accommodating space of the shell body 210 and the connecting member 220, thereby increasing the temperature of the storage tank 100. Furthermore, the connecting member 220 located between the shell body 210 and the storage tank 100 significantly exacerbates the heat transfer between the shell body 210 and the storage tank 100, and the heat transferred from the shell body 210 to the storage tank 100 through the connecting member 220 can account for 30% to 40% of the total heat conduction. In this embodiment, a cooling pipe 310 is provided outside the storage tank 100, which helps to reduce heat transfer to the storage tank 100 through the accommodating space; and the cooling pipe 310 is also coiled around the connecting member 220, further reducing heat transfer to the storage tank 100 through the connecting member 220, thereby increasing the storage time of the storage tank 100 for cryogenic liquefied gas.

[0027] It is understandable that cryogenic liquefied gases can be liquid hydrogen, liquid oxygen, or liquid argon, etc., without further restrictions.

[0028] It is understandable that the cooling medium can be liquid nitrogen, liquid helium, calcium chloride salt aqueous solution, etc., without further restrictions.

[0029] It is understood that the number of connectors 220 can be multiple. In some embodiments, the number of connectors 220 is one.

[0030] It should be noted that in traditional technologies, cryogenic liquefied gases are often stored in storage tanks. Taking liquid hydrogen storage tanks as an example, these tanks are typically used to store liquid hydrogen at -253°C. Due to the significant temperature difference between the external environment and the inside of the gas cylinder, and because liquid hydrogen has a low latent heat of vaporization and low density, it easily vaporizes by absorbing external heat. This means that once heat from the external environment is transferred to the inside of the liquid hydrogen storage tank, the pressure inside the tank will increase due to the vaporization of the liquid hydrogen. Once the pressure exceeds the limit set by the safety valve, it will automatically release, resulting in the loss of hydrogen. The storage device proposed in this embodiment, based on the aforementioned design, can reduce the influence of the external environment on the temperature of the storage tank 100, extend the storage time of the cryogenic liquid gas in the storage tank 100, and help reduce the loss of cryogenic liquid gas.

[0031] For example, there is a gap between the storage tank 100 and the housing body 210, and the storage tank 100 and the housing body 210 are connected by a connector 220 to help reduce heat transfer between the storage tank 100 and the housing body 210.

[0032] Exemplarily, the storage device also includes a discharge line and a discharge valve. The discharge line extends through the housing body 210. The discharge line connects to the cooling line 310. The discharge line is used to discharge the cooling medium. The discharge valve is disposed on the discharge line. The discharge valve is located on the side of the housing body 210 opposite to the storage tank 100. The discharge valve is used to control the opening or closing of the discharge line.

[0033] For example, the storage device also includes an application line. One end of the application line is connected to the storage tank 100. The other end of the application line is connected to the outside of the housing body 210 to allow liquefied gas to be output and used through the application line.

[0034] Exemplarily, the storage device also includes a safety line and a safety valve. One end of the safety line is connected to the storage tank 100. The other end of the safety line is connected to the outside of the housing body 210. The safety valve is disposed on the safety line. The safety valve is used to control the opening or closing of the safety line. The safety valve is provided with a preset pressure threshold. When the pressure inside the storage tank 100 exceeds the pressure threshold, the safety valve opens to open the safety line, thereby allowing the gas inside the tank to be depressurized through the safety line.

[0035] It is understood that the application piping and the safety piping can be the same piping or different piping; no further restrictions are imposed here. Both the application piping and the safety piping are coiled around the cooling piping 310 to reduce heat transfer from the external environment to the application piping and the safety piping.

[0036] In some examples, the cooling pipe 310 is spirally coiled around the outer wall between the two connecting ends of the connector 220, and the helical pitch of the cooling pipe 310 is 1 to 2 times the diameter of the cooling pipe 310.

[0037] In the above technical solution, the coiling method of the cooling pipe 310 can increase the contact area between the cooling pipe 310 and the connector 220, which is beneficial for the cooling pipe 310 to cool the connector 220.

[0038] It is understood that between the two connecting ends of the connector 220, there are multiple spiral coils of cooling pipe 310. In any two adjacent coils of cooling pipe 310, the distance between the axes of the cooling pipe 310 in the direction from one end of the connector 220 to the other is the helical pitch. The thread pitch of the corresponding cooling pipe 310 can be different at different positions on the surface of the connector 220.

[0039] In some examples, as shown in Figure 1, the cooling section 300 further includes at least two heat insulation layers 320. The heat insulation layers 320 are disposed between the housing body 210 and the storage tank 100. The heat insulation layers 320 cover the exterior of the storage tank 100. Connectors 220 pass through the heat insulation layers 320. At least two heat insulation layers 320 are spaced apart along the direction from the housing body 210 to the storage tank 100, and cooling pipes 310 are provided between adjacent heat insulation layers 320.

[0040] In the above technical solution, the cooling unit 300 further includes at least two heat insulation layers 320. The heat insulation layers 320 can further block heat transfer between the shell body 210 and the storage tank 100, and a cooling pipe 310 is provided between two adjacent heat insulation layers 320, so that the heat insulation layers 320 can reduce the impact of external temperature on the cooling pipe 310; and the cooling pipe 310 can cool the heat insulation layers 320 to improve the heat insulation capacity of the heat insulation layers 320. The cooling pipe 310 and the heat insulation layers 320 work together to further reduce the impact of the external environment on the temperature of the storage tank 100, which is beneficial to extending the storage time of cryogenic liquid gas.

[0041] In some examples, as shown in Figure 1, the cooling unit 300 further includes a refrigerant tank 330 connected to the cooling pipe 310, the refrigerant tank 330 being used to provide a cooling medium to the cooling pipe 310. The refrigerant tank 330 is located between the housing body 210 and the storage tank 100, and / or the refrigerant tank 330 is located on the side of the housing 200 opposite to the storage tank 100.

[0042] In the above technical solution, the cooling unit 300 also includes a refrigerant tank 330; the refrigerant tank 330 is connected to the cooling pipe 310 and can provide a cooling medium to the cooling pipe 310; the refrigerant tank 330 can be arranged between the shell body 210 and the storage tank 100, that is, located inside the accommodating space, so that the shell body 210 can play a heat insulation role for the refrigerant tank 330, which is conducive to ensuring the temperature of the cooling medium inside the refrigerant tank 330.

[0043] In the above technical solution, the refrigerant tank 330 can also be set outside the shell body 210, which makes it easier for staff to replace the refrigerant tank 330.

[0044] In the above technical solution, a refrigerant tank 330 can be provided between the shell body 210 and the storage tank 100 and on the outside of the shell body 210. The technical effect is the superposition of the above two solutions, which will not be elaborated here.

[0045] In some examples, as shown in FIG1, the storage device according to some embodiments of the present disclosure further includes: a first delivery pipeline 410, one end of which is connected to the storage tank 100, and the other end of which is connected to the cooling pipeline 310, the first delivery pipeline 410 being used to deliver vaporized low-temperature liquefied gas to the cooling pipeline 310; and a first valve body 420 disposed in the first delivery pipeline 410, the first valve body 420 being used to control the opening or closing of the first delivery pipeline 410.

[0046] In the above technical solution, the storage device also includes a first delivery pipeline 410 and a first valve body 420. The first delivery pipeline 410 can deliver the low-temperature liquefied gas vaporized inside the storage tank 100 to the cooling pipeline. Therefore, in practical applications, when the pressure inside the storage tank 100 is high, the first valve body 420 can be opened to control the first delivery pipeline 410 to be open, so that the low-temperature liquefied gas vaporized inside the storage tank 100 can enter the cooling pipeline 310 as a cooling medium, which is beneficial to saving resources.

[0047] In some examples, as shown in FIG1, the storage device according to some embodiments of the present disclosure further includes: a second delivery pipeline 510, one end of which is connected to a refrigerant tank 330 and the other end of which is connected to a cooling pipeline 310; and a second valve body 520 disposed in the second delivery pipeline 510, the second valve body 520 being used to control the opening or closing of the second delivery pipeline 510.

[0048] In the above technical solution, the storage device also includes a second delivery pipeline 510 and a second valve body 520. The second delivery pipeline 510 is used to deliver the cooling medium inside the refrigerant tank 330 to the cooling pipeline 310, and the second valve body 520 controls the opening or closing of the second delivery pipeline 510. Therefore, in practical applications, the supply of cooling medium can be controlled by the cooperation of the first valve body 420 and the second valve body 520 to avoid unnecessary waste of cooling medium.

[0049] It is understandable that the cooling medium inside the refrigerant tank 330 and the cryogenic liquid gas inside the storage tank 100 can be the same substance or different substances. When the cooling medium inside the refrigerant tank 330 and the cryogenic liquid gas inside the storage tank 100 are different substances, the first valve body 420 and the second valve body 520 can be controlled to open separately; for example, closing the second valve body 520 when the first valve body 420 is open, and closing the first valve body 420 when the second valve body 520 is open, can reduce the mixing between the vaporized cryogenic liquid gas and the cooling medium output from the refrigerant tank 330, and facilitate the recovery and reuse of the cooling medium.

[0050] In some examples, as shown in FIG1, the storage device according to some embodiments of the present disclosure further includes: a heat exchanger 610, including a first heat exchange channel and a second heat exchange channel. One end of the first heat exchange channel is connected to the storage tank 100. The other end of the first heat exchange channel is connected to a cryogenic liquefied gas application pipeline. One end of the second heat exchange channel is connected to a refrigerant tank 330. One end of the second heat exchange channel is connected to a cooling pipeline 310.

[0051] In the above technical solution, the storage device also includes a heat exchanger 610; the heat exchanger 610 realizes heat exchange channel capacity through a first heat exchange channel and a second heat exchange channel; when the cryogenic liquefied gas is used, the cryogenic liquefied gas can be introduced into the first heat exchange channel and then transported to the application pipeline for discharge through the first heat exchange channel; at this time, the cooling medium output from the refrigerant tank 330 is introduced into the second heat exchange channel, and the cryogenic liquefied gas can exchange heat with the cooling medium, thereby reducing the temperature of the cooling medium and increasing the temperature of the cryogenic liquefied gas; this can both improve the cooling capacity of the cooling medium and accelerate the vaporization of the cryogenic liquefied gas, so as to facilitate the discharge and use of the cryogenic liquefied gas.

[0052] As can be understood, as shown in Figure 1, the refrigerant tank 330 can be connected to the cooling channel through the second heat exchange channel or directly to the cooling channel, and a shut-off valve is set to control its conduction relationship.

[0053] As exemplarily shown in FIG1, the storage device further includes a vaporizer 620. The input of the vaporizer 620 is connected to the end of the first heat exchange passage away from the storage tank 100. The output of the vaporizer 620 is connected to an application pipeline. The vaporizer 620 is used to vaporize and output the vaporized cryogenic liquefied gas for application.

[0054] Figure 3 is a schematic structural diagram of the cooling pipes on the gas phase side and liquid phase side of a storage tank according to an embodiment of the present disclosure.

[0055] In some examples, as shown in Figure 3, the storage tank 100 has a gas phase side 1001 and a liquid phase side 1002. The coverage density of the cooling conduit 310 on the gas phase side 1001 is greater than the coverage density of the cooling conduit 310 on the liquid phase side 1002.

[0056] In the above technical solution, the storage tank 100 includes a gas phase side 1001 and a liquid phase side 1002. Since the gas phase side 1001 of the storage tank 100 corresponds to the gas phase portion inside the tank, and the liquid phase side 1002 corresponds to the liquid phase portion inside the tank, the temperature of the gas phase side 1001 is slightly higher than the temperature of the liquid phase side 1002. Furthermore, the coverage density of the cooling pipes 310 on the gas phase side 1001 is greater than the coverage density of the cooling pipes 310 on the liquid phase side 1002, which helps to reduce the temperature of the gas phase side 1001, thereby facilitating the suppression of vaporization of cryogenic liquefied gas.

[0057] It is understandable that the coverage density of the cooling pipe 310 is the area covered by the cooling pipe 310 per unit area.

[0058] It is understandable that when liquid gas is stored in storage tank 100, the storage device is placed at the application site, with the side containing the liquid gas in the gas phase being the gas phase side 1001 and the side containing the liquid gas in the liquid phase being the liquid phase side 1002; that is, when the storage device is placed at the application site, the gas phase side 1001 is located at the upper part of storage tank 100, and the liquid phase side 1002 is located at the lower part of storage tank 100.

[0059] For example, the coverage density of the cooling pipes 310 on the gas phase side 1001 and the liquid phase side 1002 is 2:1 or 3:1.

[0060] Figure 4 is a schematic structural diagram of the cooling pipe at the end of a storage tank according to some embodiments of the present disclosure; Figure 5 is a schematic structural diagram of the cooling pipe at the end of the storage tank shown in Figure 4 from another perspective.

[0061] In some examples, as shown in Figures 4 and 5, the storage tank 100 is cylindrical, and a cooling pipe 310 is coiled around the axial end face of the storage tank 100.

[0062] In the above technical solution, the cooling pipe 310 is coiled around the axial end face of the storage tank 100, which can further increase the contact area between the cooling pipe 310 and the storage tank 100, and improve the heat insulation and cooling capacity of the cooling pipe 310 for the storage tank 100.

[0063] For example, as shown in Figures 4 and 5, the cooling pipe 310 is spirally coiled into a cap shape and fits against the two end faces of the storage tank 100 in the axial direction.

[0064] In some examples, the vacuum level between the housing 210 and the storage tank 100 is 10. -3 Pa to 10 -6 Pa.

[0065] In the above technical solution, a vacuum process is performed between the shell body 210 and the storage tank 100 to make the vacuum degree of the accommodating space range from 10-3 Pa to 10-6 Pa, which is beneficial to reduce the heat transfer efficiency between the shell body 210 and the storage tank 100.

[0066] The technical solutions according to some embodiments of this disclosure include at least the following beneficial effects. The storage device provided by the embodiments of this disclosure includes a storage tank, a housing, and a cooling section. The housing includes a housing body and a connector. The cooling section includes cooling pipes. The storage tank is located within the accommodating space formed by the housing body. The storage tank is connected to the housing body via the connector. This allows the storage tank to be fixedly installed relative to the housing body. The cooling pipes are coiled around the outside of the storage tank and the connector. In some embodiments, the storage tank stores cryogenic liquefied gas, and the cooling pipes contain a cooling medium, thereby forming a cold shield outside the storage tank to absorb heat transferred from the external environment into the accommodating space, reducing heat transfer between the external environment and the storage tank, extending the heating time of the storage tank; it can also reduce the vaporization efficiency of the cryogenic liquefied gas, thereby extending the storage time of the cryogenic liquefied gas. The cooling pipes can also cool the connectors, keeping them in a cool environment; and they can absorb heat transferred from the external environment to the connectors, which helps to reduce the rate of temperature rise of the connectors; thus, the influence of the connectors on the temperature of the storage tank can be reduced, and the storage time of cryogenic liquefied gas can be further extended.

[0067] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0068] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0069] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A storage device, comprising: Storage tanks are used to store cryogenic liquefied gases; A housing portion includes a housing body and a connector. The housing body forms an accommodating space, the storage tank is located in the accommodating space, one end of the connector is connected to the housing body, and the other end of the connector is connected to the storage tank. The cooling section includes cooling pipes that are coiled around the outside of the storage tank and the connector, and the cooling pipes contain a cooling medium.

2. The storage device according to claim 1, wherein, The cooling pipe is spirally wound around the outer wall between the two connecting ends of the connector, and the spiral pitch of the cooling pipe is 1 to 2 times the diameter of the cooling pipe.

3. The storage device according to claim 1, wherein, The cooling section also includes: At least two insulation layers are provided, the insulation layer is disposed between the shell body and the storage tank, the insulation layer is wrapped around the outside of the storage tank, and the connector passes through the insulation layer; In this configuration, at least two layers of insulation are spaced apart along the direction from the shell body to the storage tank, and cooling pipes are provided between adjacent layers of insulation.

4. The storage device according to claim 1, wherein, The cooling unit also includes: A refrigerant tank is connected to the cooling pipeline, and the refrigerant tank is used to provide the cooling medium to the cooling pipeline; The refrigerant tank is located between the housing body and the storage tank, and / or the refrigerant tank is located on the side of the housing body opposite to the storage tank.

5. The storage device according to claim 4, further comprising: A first delivery pipeline, one end of which is connected to the storage tank, and the other end of which is connected to the cooling pipeline, is used to deliver the vaporized cryogenic liquefied gas to the cooling pipeline; and A first valve body is disposed in the first delivery pipeline, and the first valve body is used to control the opening or closing of the first delivery pipeline.

6. The storage device according to claim 5, further comprising: The second delivery pipeline has one end connected to the refrigerant tank and the other end connected to the cooling pipeline; as well as The second valve body is disposed in the second delivery pipeline, and the second valve body is used to control the opening or closing of the second delivery pipeline.

7. The savings device according to claim 4, further comprising: The heat exchanger includes a first heat exchange channel and a second heat exchange channel. One end of the first heat exchange channel is connected to the storage tank, and the other end of the first heat exchange channel is connected to the application pipeline of the cryogenic liquefied gas. One end of the second heat exchange channel is connected to the refrigerant tank, and the other end of the second heat exchange channel is connected to the cooling pipeline.

8. The saving device according to any one of claims 1 to 7, wherein, The storage tank has a gas phase side and a liquid phase side, and the coverage density of the cooling pipes on the gas phase side is greater than the coverage density of the cooling pipes on the liquid phase side.

9. The saving device according to any one of claims 1 to 7, wherein, The storage tank is cylindrical, and the cooling pipes are coiled around the axial end face of the storage tank.

10. The saving device according to any one of claims 1 to 7, wherein, The vacuum level between the housing body and the storage tank is 10. -3 Pa to 10 -6 Pa.

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