Storage device

Abstract

The invention relates to the technical field of gas storage, in particular to a storage device. The storage device comprises a storage tank used for storing low-temperature liquefied gas; the shell part comprises a shell body and a connecting piece, a containing space is formed in the shell body, the saving box is located in the containing space, one end of the connecting piece is connected to the shell body, and the other end of the connecting piece is connected to the saving box; and the cooling part comprises a cooling pipeline, the cooling pipeline is wound around the exterior of the storage tank and the connecting piece, and a cooling medium is contained in the cooling pipeline. Based on the setting, the storage device provided by the embodiment of the invention can reduce the temperature influence of the external environment on the storage tank, prolongs the storage time of the storage tank for the low-temperature liquid gas, and is beneficial to reducing the loss of the low-temperature liquid gas.

Description

Technical Field

[0001] The present disclosure relates to the technical field of gas storage, and in particular to a storage device. Background Art

[0002] Cryogenic liquefied gas is often stored in storage tanks and discharged through application pipelines when in use. Due to the large temperature difference between the external environment and the inside of the gas cylinder, once the heat from the external environment is transferred to the inside of the storage tank, the cryogenic liquefied gas will vaporize after absorbing heat, causing the pressure inside the storage tank to increase. The vaporized cryogenic liquefied gas will be automatically discharged after exceeding the limit pressure of the safety valve, which is not conducive to the long-term storage of cryogenic liquefied gas. Summary of the invention

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, according to an embodiment of the present disclosure, a storage device is proposed, comprising:

[0005] Storage tanks for storing cryogenic liquefied gases;

[0006] The shell part includes a shell body and a connecting piece, wherein the shell body forms a containing space, the storage tank is located in the containing space, one end of the connecting piece is connected to the shell body, and the other end of the connecting piece is connected to the storage tank;

[0007] The cooling part includes a cooling pipeline, the cooling pipeline is coiled around the outside of the storage tank and the connecting piece, and the cooling medium is contained in the cooling pipeline.

[0008] In a feasible implementation manner, the cooling pipeline is spirally wound around the outer wall between the two connecting ends of the connecting piece, and the spiral pitch of the cooling pipeline is 1 to 2 times the diameter of the cooling pipeline.

[0009] In a feasible implementation manner, the cooling unit further includes:

[0010] At least two heat insulation layers, the heat insulation layers are arranged between the shell body and the storage tank, the heat insulation layers are wrapped around the outside of the storage tank, and the connectors are passed through the heat insulation layers;

[0011] Among them, along the direction of the shell body pointing to the storage tank, at least two layers of heat insulation are arranged at intervals, and cooling pipelines are arranged between two adjacent layers of heat insulation.

[0012] In a feasible implementation manner, the cooling unit further includes:

[0013] A refrigerant tank is connected to the cooling pipeline, and is used to provide cooling medium for the cooling pipeline;

[0014] The refrigerant tank is located between the shell body and the storage tank, and / or the refrigerant tank is located on a side of the shell body away from the storage tank.

[0015] In a feasible implementation, it also includes:

[0016] 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, and the first delivery pipeline is used to deliver vaporized low-temperature liquefied gas to the cooling pipeline;

[0017] The first valve body is arranged on the first delivery pipeline, and is used to control the conduction or cutoff of the first delivery pipeline.

[0018] In a feasible implementation, it also includes:

[0019] a second delivery pipeline, one end of which is connected to the refrigerant tank, and the other end of which is connected to the cooling pipeline;

[0020] The second valve body is arranged on the second delivery pipeline, and is used to control the conduction or cut-off of the second delivery pipeline.

[0021] In a feasible implementation, it also includes:

[0022] 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, the other end of the first heat exchange channel is used to connect to the application pipeline of the low-temperature liquefied gas, one end of the second heat exchange channel is connected to the refrigerant tank, and one end of the second heat exchange channel is connected to the cooling pipeline.

[0023] In one possible implementation,

[0024] The storage tank has a gas phase side and a liquid phase side, and the coverage density of the cooling pipeline on the gas phase side is greater than the coverage density of the cooling pipeline on the liquid phase side.

[0025] In one possible implementation,

[0026] The storage tank is cylindrical, and a cooling pipeline is coiled on the axial end surface of the storage tank.

[0027] In one possible implementation,

[0028] The vacuum degree between the shell body and the storage tank is 10 -3 Pa to 10 -6 Pa.

[0029] Compared with the prior art, the present disclosure at least includes the following beneficial effects: the storage device provided by the embodiment of the present disclosure includes a storage tank, a shell part and a cooling part, wherein the shell part includes a shell body and a connecting piece, the cooling part includes a cooling pipeline, the storage tank is located in the accommodating space formed by the shell body, the storage tank and the shell body are connected by a connecting piece so that the storage tank can be fixed relative to the shell body, the cooling pipeline is coiled around the outside of the storage tank and the connecting piece, in actual application, the storage tank stores low-temperature liquefied gas inside, and the cooling pipeline contains cooling medium inside, so that the cooling pipeline A cold shield can be formed on the outside of the storage tank to absorb the heat transmitted from the external environment to the storage space, so as to reduce the heat transfer between the external environment and the storage tank, extend the heating time of the storage tank, reduce the vaporization efficiency of the cryogenic liquefied gas, and thus extend the storage time of the cryogenic liquefied gas; at the same time, the cooling pipeline can also cool the connecting parts, so that the connecting parts are in an atmosphere with low temperature, and can absorb the heat transmitted from the external environment to the connecting parts, which is beneficial to reduce the heating rate of the connecting parts, thereby weakening the influence of the connecting parts on the temperature of the storage tank, and further extending the storage time of the cryogenic liquefied gas.

[0030] The storage device described in the present disclosure and other advantages, objectives and features of the present disclosure will be reflected in part through the following description, and will also be understood by those skilled in the art through research and practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0032] Figure 1 A schematic structural diagram of a storage device according to an embodiment of the present disclosure;

[0033] Figure 2 for Figure 1 A schematic structural diagram of the A region of the storage device shown;

[0034] Figure 3 A schematic structural diagram of cooling pipelines at the gas phase side and the liquid phase side of a storage tank according to an embodiment of the present disclosure.

[0035] Figure 4 A schematic structural diagram of a cooling pipeline at the end of a storage tank according to an embodiment of the present disclosure.

[0036] Figure 5 for Figure 4 A schematic structural diagram of the cooling line at the end of the storage tank is shown from another perspective.

[0037] in, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names is as follows:

[0038] 100 storage tank, 200 shell part, 300 cooling part;

[0039] 210 housing body, 220 connecting piece;

[0040] 310 cooling pipeline, 320 insulation layer, 330 refrigerant tank;

[0041] 410 first delivery pipeline, 420 first valve body;

[0042] 510 second delivery pipeline, 520 second valve body;

[0043] 610 heat exchanger, 620 vaporizer;

[0044] 1001 is a gas phase side, 1002 is a liquid phase side. DETAILED DESCRIPTION

[0045] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] Figure 1 A schematic structural diagram of a storage device according to an embodiment of the present disclosure; Figure 2 for Figure 1 A schematic structural diagram of region A of the storage device is shown.

[0047] In some examples, such as Figure 1 and Figure 2 As shown, according to an embodiment of the present disclosure, a storage device is proposed, including: a storage tank 100, used to store low-temperature liquefied gas; a shell part 200, including a shell body 210 and a connecting piece 220, the shell body 210 forms a accommodating space, the storage tank 100 is located in the accommodating space, one end of the connecting piece 220 is connected to the shell body 210, and the other end of the connecting piece 220 is connected to the storage tank 100; a cooling part 300, the cooling part 300 includes a cooling pipeline 310, the cooling pipeline 310 is coiled around the outside of the storage tank 100 and the connecting piece 220, and the cooling pipeline 310 contains a cooling medium.

[0048] The storage device proposed in the embodiment of the present disclosure includes a storage tank 100, a shell part 200 and a cooling part 300, wherein the shell part 200 includes a shell body 210 and a connecting piece 220, and the cooling part 300 includes a cooling pipeline 310. The storage tank 100 is located in the accommodating space formed by the shell body 210. The storage tank 100 and the shell body 210 are connected by the connecting piece 220, so that the storage tank 100 can be fixed relative to the shell body 210. The cooling pipeline 310 is coiled and arranged on the outside of the storage tank 100 and the connecting piece 220. In actual application, the storage tank 100 stores low-temperature liquefied gas inside, and the cooling pipeline 310 contains cooling medium inside, so that the cooling The cooling pipe 310 can form a cold shield on the outside of the storage tank 100, absorb the heat transmitted from the external environment to the accommodating space, so as to reduce the heat transfer between the external environment and the storage tank 100, extend the heating time of the storage tank 100, reduce the vaporization efficiency of the cryogenic liquefied gas, and thus extend the storage time of the cryogenic liquefied gas; at the same time, the cooling pipe 310 can also cool the connector 220, so that the connector 220 is in a temperature-controlled atmosphere, and can absorb the heat transferred from the external environment to the connector 220, which is beneficial 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.

[0049] 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, the heat of the external environment can pass through the shell body 210, and be transferred to the storage tank 100 through the accommodating space inside the shell body 210 and the connecting piece 220, so as to increase the temperature of the storage tank 100, wherein the connecting piece 220 located between the shell body 210 and the storage tank 100 seriously aggravates the heat transfer between the shell body 210 and the storage tank 100, and the heat introduced into the storage tank 100 by the shell body 210 through the connecting piece 220 can account for 30% to 40% of the total heat conduction. The embodiment of the present disclosure arranges a cooling pipeline 310 outside the storage tank 100, which can help reduce the heat transfer to the storage tank 100 through the accommodating space, and at the same time, the cooling pipeline 310 is coiled on the connecting piece 220, which further reduces the heat transfer to the storage tank 100 through the connecting piece 220, thereby increasing the storage time of the storage tank 100 for the cryogenic liquefied gas.

[0050] It is understandable that the cryogenic liquefied gas may be liquid hydrogen, liquid oxygen or liquid argon, etc., without further limitation herein.

[0051] It is understandable that the cooling medium can be liquid nitrogen, liquid helium, calcium chloride brine solution, etc., and no further limitation is made here.

[0052] It can be understood that the number of the connecting members 220 can be multiple, and preferably, the number of the connecting member 220 is one.

[0053] It should be noted that in traditional technology, cryogenic liquefied gas is often stored in storage tanks. Taking liquid hydrogen storage tanks as an example, liquid hydrogen storage tanks are often used to store liquid hydrogen at -253°C. Due to the large temperature difference between the external environment and the inside of the gas cylinder, the latent heat of vaporization and density of liquid hydrogen are small, and it is very easy to vaporize due to absorbing external heat. Once the heat of the external environment is transferred to the inside of the liquid hydrogen storage tank, the pressure inside the storage tank will increase due to the vaporization of liquid hydrogen. After exceeding the limited pressure of the safety valve, it will be automatically discharged, thereby causing the loss of hydrogen. The storage device proposed in the embodiment of the present disclosure, based on the above-mentioned setting, can reduce the impact of the external environment on the temperature of the storage tank 100, extend the storage time of the storage tank 100 for cryogenic liquid gas, and help reduce the loss of cryogenic liquid gas.

[0054] Exemplarily, there is a gap between the storage tank 100 and the shell body 210 , and the storage tank 100 and the shell body 210 are connected via a connector 220 , which helps to reduce heat transfer between the storage tank 100 and the shell body 210 .

[0055] Exemplarily, the storage device also includes a discharge pipeline and a discharge valve. The discharge pipeline passes through the shell body 210, and the discharge pipeline is connected to the cooling pipeline 310. The discharge pipeline is used to discharge the cooling medium. The discharge valve is arranged on the discharge pipeline, and the discharge valve is located on the side of the shell body 210 away from the storage tank 100. The discharge valve is used to control the conduction or cutoff of the discharge pipeline.

[0056] Exemplarily, the storage device further includes an application pipeline, one end of which is connected to the storage tank 100, and the other end of which is connected to the outside of the shell body 210, so that the liquefied gas can be output for use through the application pipeline.

[0057] Exemplarily, the storage device also includes a safety pipeline and a safety valve. One end of the safety pipeline is connected to the storage tank 100, and the other end of the safety pipeline is connected to the outside of the shell body 210. The safety valve is arranged on the safety pipeline. The safety valve is used to control the conduction or cutoff of the safety pipeline. The safety valve is provided with a preset pressure threshold. When the pressure inside the storage tank 100 is greater than the pressure threshold, the safety valve opens to make the safety pipeline conductive, so that the gas in the tank can be depressurized through the safety pipeline.

[0058] It is understandable that the application pipeline and the safety pipeline can be the same pipeline or different pipelines, and no further restrictions are made here. The application pipeline and the safety pipeline are both wound around the cooling pipeline 310 to reduce heat transfer from the external environment to the application pipeline and the safety pipeline.

[0059] In some examples, the cooling line 310 is spirally wound around the outer wall between the two connecting ends of the connector 220 , and the spiral pitch of the cooling line 310 is 1 to 2 times the diameter of the cooling line 310 .

[0060] In the above technical solution, the winding manner 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 .

[0061] It can be understood that between the two connecting ends of the connector 220, multiple circles of cooling pipes 310 are spirally wound. In any two adjacent circles of cooling pipes 310, in the direction from one end of the connector 220 to the other end, the distance between the axes of the cooling pipes 310 is the spiral pitch. At different positions on the surface of the connector 220, the corresponding thread pitch of the cooling pipes 310 may be different.

[0062] In some examples, such as Figure 1 As shown, the cooling part 300 also includes: at least two layers of heat insulation layers 320, the heat insulation layers 320 are arranged between the shell body 210 and the storage tank 100, the heat insulation layers 320 are wrapped around the outside of the storage tank 100, and the connecting piece 220 is passed through the heat insulation layers 320; wherein, along the direction of the shell body 210 pointing to the storage tank 100, at least two layers of heat insulation layers 320 are arranged at intervals, and a cooling pipeline 310 is arranged between two adjacent layers of heat insulation layers 320.

[0063] In the above technical solution, the cooling part 300 also includes at least two layers of thermal insulation layers 320, which can further block the heat transfer between the shell body 210 and the storage tank 100. At the same time, a cooling pipeline 310 is arranged between two adjacent layers of thermal insulation layers 320, so that the thermal insulation layer 320 can reduce the influence of the external temperature on the cooling pipeline 310. At the same time, the cooling pipeline 310 can cool the thermal insulation layer 320 to improve the thermal insulation capacity of the thermal insulation layer 320. The cooperation between the two can further reduce the influence of the external environment on the temperature of the storage tank 100, which is beneficial to extend the storage time of the cryogenic liquid gas.

[0064] In some examples, such as Figure 1 As shown, the cooling part 300 also includes: a refrigerant tank 330, which is connected to the cooling pipeline 310, and the refrigerant tank 330 is used to provide a cooling medium for the cooling pipeline 310; wherein, the refrigerant tank 330 is located between the shell body 210 and the storage tank 100, and / or the refrigerant tank 330 is located on the side of the shell part 200 away from the storage tank 100.

[0065] In the above technical solution, the cooling part 300 also includes a refrigerant tank 330, which is connected to the cooling pipeline 310 and can provide cooling medium for the cooling pipeline 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 role of heat insulation for the refrigerant tank 330, which is beneficial to ensure the temperature of the cooling medium inside the refrigerant tank 330.

[0066] In the above technical solution, the refrigerant tank 330 may also be arranged outside the shell body 210 , which makes it easier for the staff to replace the refrigerant tank 330 .

[0067] In the above technical solution, a refrigerant tank 330 can be arranged between the shell body 210 and the storage tank 100 and outside the shell body 210. The specific effect is the superposition of the above two solutions, which will not be repeated here.

[0068] In some examples, such as Figure 1 As shown, it also includes: a first delivery pipeline 410, one end of which is connected to the storage tank 100, and the other end of the first delivery pipeline 410 is used to be connected to the cooling pipeline 310, and the first delivery pipeline 410 is used to deliver vaporized low-temperature liquefied gas to the cooling pipeline 310; a first valve body 420 is arranged on the first delivery pipeline 410, and the first valve body 420 is used to control the conduction or cutoff of the first delivery pipeline 410.

[0069] In the above technical solution, the storage device also includes a first delivery pipeline 410 and a first valve body 420, wherein the first delivery pipeline 410 can deliver the low-temperature liquefied gas vaporized inside the storage tank 100 to the cooling pipeline. In actual application, when the internal pressure of the storage tank 100 is high, the first valve body 420 can be opened to control the conduction of the first delivery pipeline 410, so that the low-temperature liquid gas vaporized inside the storage tank 100 enters the cooling pipeline 310 and is used as a cooling medium, which is beneficial to saving resources.

[0070] In some examples, such as Figure 1 As shown, it also includes: a second delivery pipeline 510, one end of which is connected to the refrigerant tank 330, and the other end is connected to the cooling pipeline 310; a second valve body 520, which is arranged on the second delivery pipeline 510, and the second valve body 520 is used to control the conduction or cutoff of the second delivery pipeline 510.

[0071] In the above technical solution, the storage device also includes a second delivery pipeline 510 and a second valve body 520, wherein 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 conduction or cutoff of the second delivery pipeline 510; in actual application, 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.

[0072] 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 respectively, such as closing the second valve body 520 when the first valve body 420 is opened, and closing the first valve body 420 when the second valve body 520 is opened, thereby reducing the mixing between the vaporized cryogenic liquid gas and the cooling medium output from the refrigerant tank 330, which is beneficial to the recovery and secondary utilization of the cooling medium.

[0073] In some examples, such as Figure 1 As shown, it also 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, and the other end of the first heat exchange channel is used to connect to the application pipeline of the low-temperature liquefied gas, one end of the second heat exchange channel is connected to the refrigerant tank 330, and one end of the second heat exchange channel is connected to the cooling pipeline 310.

[0074] In the above technical solution, the storage device also includes a heat exchanger 610, which realizes the heat exchange channel capacity through the first heat exchange channel and the second heat exchange channel. When the cryogenic liquefied gas is used, the cryogenic liquefied gas can be passed into the first heat exchange channel, and then transported to the application pipeline through the first heat exchange channel for discharge and use. At this time, the cooling medium output by the refrigerant tank 330 is passed 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. It can not only improve the cooling capacity of the cooling medium, but also have the ability to accelerate the vaporization of the cryogenic liquefied gas, so as to facilitate the discharge and use of the cryogenic liquefied gas.

[0075] It is understandable that if Figure 1 As shown, the refrigerant tank 330 can be connected to the cooling channel through the second heat exchange channel, and can also be directly connected to the cooling channel, and a stop valve is provided to control the conduction relationship.

[0076] For example, Figure 1As shown, the storage device also includes a vaporizer 620, the input end of the vaporizer 620 is connected to the end of the first heat exchange channel away from the storage tank 100, the output end of the vaporizer 620 is used to be connected to the application pipeline, and the vaporizer 620 is used to vaporize and output the vaporized low-temperature liquefied gas to facilitate the application of the vaporized low-temperature liquefied gas.

[0077] Figure 3 A schematic structural diagram of cooling pipelines at the gas phase side and the liquid phase side of a storage tank according to an embodiment of the present disclosure.

[0078] In some examples, such as Figure 3 As shown, the storage tank 100 has a gas phase side 1001 and a liquid phase side 1002 , and the coverage density of the cooling pipeline 310 on the gas phase side 1001 is greater than the coverage density of the cooling pipeline 310 on the liquid phase side 1002 .

[0079] 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 part in the tank, and the liquid phase side 1002 corresponds to the liquid phase part in the tank, the temperature of the gas phase side 1001 is slightly higher than the temperature of the liquid phase side 1002. The covering density of the cooling pipeline 310 on the gas phase side 1001 is greater than the covering density of the cooling pipeline 310 on the liquid phase side 1002, which is beneficial to reducing the temperature of the gas phase side 1001 so as to suppress the vaporization of the low-temperature liquefied gas.

[0080] It can be understood that the coverage density of the cooling pipeline 310 is the area covered by the cooling pipeline 310 per unit area.

[0081] It can be understood that when the liquid gas is stored in the storage tank 100, the storage device is placed at the application site, and the side where the gas phase liquid gas is located is the gas phase side 1001, and the side where the liquid phase liquid gas is located is 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 the storage tank 100, and the liquid phase side 1002 is located at the lower part of the storage tank 100.

[0082] Exemplarily, the coverage density of the cooling pipelines 310 on the gas phase side 1001 and the liquid phase side 1002 is 2:1 or 3:1.

[0083] Figure 4 A schematic structural diagram of a cooling pipeline at the end of a storage tank according to an embodiment of the present disclosure; Figure 5 for Figure 4 A schematic structural diagram of the cooling line at the end of the storage tank is shown from another perspective.

[0084] In some examples, such as Figure 4 and Figure 5As shown, the storage tank 100 is cylindrical, and a cooling pipeline 310 is coiled on the axial end surface of the storage tank 100 .

[0085] In the above technical solution, the cooling pipeline 310 is coiled around the axial end surface of the storage tank 100 to further increase the contact area between the cooling pipeline 310 and the storage tank 100 , thereby improving the heat insulation and cooling capabilities of the cooling pipeline 310 for the storage tank 100 .

[0086] For example, Figure 4 and Figure 5 As shown, the cooling pipeline 310 is spirally wound into a head shape and is fitted on the two end surfaces of the storage tank 100 in the axial direction.

[0087] In some examples, the vacuum degree between the housing body 210 and the storage tank 100 is 10 -3 Pa to 10 -6 Pa.

[0088] In the above technical solution, the housing body 210 and the storage tank 100 are evacuated to make the vacuum degree of the accommodating space within 10 -3 Pa to 10 -6 Pa, it is beneficial to reduce the heat transfer efficiency between the shell body 210 and the storage tank 100.

[0089] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0090] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0091] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0092] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A storage device, characterized in that: include: Storage tanks for storing cryogenic liquefied gases; The shell part includes a shell body and a connecting piece, wherein the shell body forms a containing space, the storage tank is located in the containing space, one end of the connecting piece is connected to the shell body, and the other end of the connecting piece is connected to the storage tank; The cooling part includes a cooling pipeline, the cooling pipeline is coiled around the outside of the storage tank and the connecting piece, and the cooling pipeline contains a cooling medium.

2. The storage device according to claim 1, characterized in that: The cooling pipeline is spirally wound around the outer wall between the two connecting ends of the connecting piece, and the spiral pitch of the cooling pipeline is 1 to 2 times the diameter of the cooling pipeline.

3. The storage device according to claim 1, characterized in that: The cooling section also includes: At least two heat-insulating layers, the heat-insulating layers are arranged between the shell body and the storage tank, the heat-insulating layers are wrapped around the outside of the storage tank, and the connecting piece is passed through the heat-insulating layers; Wherein, along the direction of the shell body pointing to the storage tank, at least two layers of the heat insulation layers are arranged at intervals, and the cooling pipeline is arranged between two adjacent layers of the heat insulation layers.

4. The storage device according to claim 1, characterized in that: The cooling unit further comprises: A refrigerant tank connected to the cooling pipeline, the refrigerant tank is used to provide the cooling medium for the cooling pipeline; Wherein, the refrigerant tank is located between the shell body and the storage tank, and / or, the refrigerant tank is located on a side of the shell portion away from the storage tank.

5. The storage device according to claim 4, characterized in that: Also includes: 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, and the first delivery pipeline is used to deliver the vaporized low-temperature liquefied gas to the cooling pipeline; The first valve body is arranged on the first delivery pipeline, and the first valve body is used to control the conduction or cutoff of the first delivery pipeline.

6. The storage device according to claim 5, characterized in that: Also includes: a second delivery pipeline, one end of which is connected to the refrigerant tank, and the other end of which is connected to the cooling pipeline; The second valve body is arranged on the second delivery pipeline, and the second valve body is used to control the conduction or cutoff of the second delivery pipeline.

7. The storage device according to claim 4, characterized in that: Also includes: The heat exchanger includes a first heat exchange channel and a second heat exchange channel, wherein 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 used to connect to the application pipeline of the low-temperature liquefied gas, one end of the second heat exchange channel is connected to the refrigerant tank, and one end of the second heat exchange channel is connected to the cooling pipeline.

8. The storage device according to any one of claims 1 to 7, characterized in that: The storage tank has a gas phase side and a liquid phase side, and the covering density of the cooling pipeline on the gas phase side is greater than the covering density of the cooling pipeline on the liquid phase side.

9. The storage device according to any one of claims 1 to 7, characterized in that: The storage tank is cylindrical, and the cooling pipeline is coiled on the axial end surface of the storage tank.

10. The storage device according to any one of claims 1 to 7, characterized in that: The vacuum degree between the housing body and the storage tank is 10 -3 Pa to 10 -6 Pa.

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