Film storage tank

Abstract

The invention provides a film storage tank, and relates to the technical field of storage tank containers. The film storage tank comprises a sealing cavity and a plurality of heat insulation modules, and the heat insulation modules are sequentially and fixedly installed in the sealing cavity. The sealing cavity comprises a first cavity wall and a second cavity wall which are oppositely arranged. The heat insulation module comprises a first connecting side, a second connecting side, a first contact surface and a second contact surface, the first connecting side and the second connecting side are oppositely arranged, the first contact surface and the second contact surface are oppositely arranged, the first connecting side is fixedly connected to the first cavity wall, the second connecting side is fixedly connected to the second cavity wall, and the first contact surface and the second contact surface directly or indirectly intersect. According to the thin film storage tank, the possibility that the heat insulation module deforms under the action of force is small, the supporting capacity is higher, the use reliability of the thin film storage tank is guaranteed, arrangement of a supporting structure in the prior art can be reduced or even avoided, and the structure of the thin film storage tank is simplified.

Description

Technical Field

[0001] This application relates to the technical field of storage tank containers, and particularly to a thin-film storage tank. Background Art

[0002] Thin-film storage tanks are mainly used to store Liquefied Natural Gas (LNG). Given the low-temperature physical properties of LNG, during the transportation of LNG using a thin-film storage tank, in order to reduce the possibility of LNG vaporization, the thin-film storage tank usually has an insulation module.

[0003] Based on the structure of the existing insulation module, the support strength is relatively low, and a support structure needs to be used to ensure the support strength of the thin-film storage tank, thereby ensuring the reliability of the thin-film storage tank in use. Summary of the Invention

[0004] This application provides a thin-film storage tank. The thin-film storage tank includes an insulation module. The first contact surface and the second contact surface of the insulation module intersect directly or indirectly, such that the possibility of the insulation module deforming under the action of force is small, the support capacity is stronger, the reliability of the thin-film storage tank in use is ensured, and the setting of the support structure in the prior art can be reduced or even avoided, simplifying the structure of the thin-film storage tank.

[0005] In a first aspect, this application provides a thin-film storage tank. The thin-film storage tank includes a sealed cavity and a plurality of insulation modules. The plurality of insulation modules are sequentially and fixedly installed in the sealed cavity. The sealed cavity includes a first cavity wall and a second cavity wall arranged opposite to each other. The insulation module includes a first connection side and a second connection side arranged opposite to each other and a first contact surface and a second contact surface arranged opposite to each other. The first connection side is fixedly connected to the first cavity wall, the second connection side is fixedly connected to the second cavity wall, and the first contact surface and the second contact surface intersect directly or indirectly.

[0006] In the example of this application, the sealed cavity can provide an installation space for the insulation module. Since the first cavity wall and the second cavity wall are part of the installation cavity, and the first connection side and the second connection side are part of the insulation module, by fixedly connecting the first connection side to the first cavity wall and the second connection side to the second cavity wall, different parts of the insulation module are fixedly connected to different cavity walls of the sealed cavity, reducing the possibility of the insulation module shaking in the sealed cavity and ensuring the reliability of the thin-film storage tank in use.

[0007] Since both the first contact surface and the second contact surface are also part of the adiabatic module, the first connection side is fixedly connected to the first cavity wall through the first contact surface, and the second connection side is fixedly connected to the second cavity wall through the second contact surface. The force acting on the first connection side through the first cavity wall and the force acting on the second connection side through the second cavity wall can both be transmitted to the first contact surface and the second contact surface. Moreover, the first contact surface and the second contact surface intersect directly or indirectly, causing the direction of the force transmitted to the first contact surface and the second contact surface to change. In comparison with the prior art where the four sides of the cross-section of the adiabatic module are perpendicular to each other and are prone to deformation under the action of force, in the example of the present application, the adiabatic module is less likely to deform under the action of force and has stronger supporting ability, which can ensure the reliability of the use of the thin-film storage tank and can reduce or even avoid the setting of the support structure in the prior art, thus simplifying the structure of the thin-film storage tank.

[0008] In some possible implementation manners, the adiabatic module includes a first moisture-proof layer and an adiabatic layer connected to each other, and the first moisture-proof layer is disposed on a side of the adiabatic layer facing the second cavity wall. Alternatively, the first adiabatic module is a vacuum box.

[0009] In the example of the present application, the first adiabatic module may include a first moisture-proof layer and an adiabatic layer connected to each other, and the first moisture-proof layer is disposed on a side of the adiabatic layer facing the second cavity wall, which can reduce the possibility of moisture and the like entering the adiabatic layer from the second cavity wall, ensure the reliability of the use of the adiabatic layer, and make the heat exchange efficiency between the inside of the thin-film storage tank and the external environment relatively low.

[0010] The first adiabatic module may also be a vacuum box, which is connected between the first cavity wall and the second cavity wall. Based on the physical properties of the vacuum box, the vacuum box can reduce the overall thermal conductivity between the first cavity wall and the second cavity wall, making the heat exchange efficiency between the inside of the thin-film storage tank and the external environment relatively low.

[0011] In some possible implementation manners, the sealed cavity includes a first sealed cavity, and the adiabatic module includes a first adiabatic module. The thin-film storage tank includes a main shielding film and a secondary shielding film. The secondary shielding film and the main shielding film are arranged at intervals, and the secondary shielding film and the main shielding film cooperate to form the first sealed cavity. The first cavity wall includes a side of the main shielding film facing the secondary shielding film, and the second cavity wall includes a side of the secondary shielding film facing the main shielding film. A plurality of first adiabatic modules are sequentially disposed in the first sealed cavity. The first adiabatic module includes a first sub-connection side and a second sub-connection side arranged opposite to each other and a first sub-contact surface and a second sub-contact surface arranged opposite to each other. The first connection side includes the first sub-connection side, the second connection side includes the second sub-connection side, the first contact surface includes the first sub-contact surface, the second contact surface includes the second sub-contact surface. The first sub-connection side is fixedly connected to the main shielding film, the second sub-connection side is fixedly connected to the secondary shielding film, and the first sub-contact surface and the second sub-contact surface intersect directly or indirectly.

[0012] In the example of this application, the main shielding film and the secondary shielding film cooperate to form a first sealing cavity, and the first sealing cavity can provide an installation space for a plurality of first heat insulation modules. Since both the first sub-connection side and the second sub-connection side are part of the first heat insulation module, therefore, by fixedly connecting the first sub-connection side to the main shielding film and the second sub-connection side to the secondary shielding film, different parts of the first heat insulation module are fixedly connected to the first sealing cavity, reducing the possibility of the first heat insulation module shaking in the first sealing cavity and ensuring the reliability of the use of the thin-film storage tank.

[0013] Since both the first sub-contact surface and the second sub-contact surface are also part of the first heat insulation module, therefore, by fixedly connecting the first sub-connection side to the main shielding film and the second sub-connection side to the secondary shielding film, the force acting on the first sub-connection side through the main shielding film and the force acting on the second sub-connection side through the secondary shielding film can both be transmitted to the first sub-contact surface and the second sub-contact surface, and the first sub-contact surface and the second sub-contact surface intersect directly or indirectly, so that the direction of the force transmitted to the first sub-contact surface and the second sub-contact surface changes. Compared with the prior art where the four sides of the cross-section of the heat insulation module are perpendicular to each other and are prone to deformation under the action of force, in the example of this application, the first heat insulation module is less likely to deform under the action of force and has stronger supporting ability, ensuring the reliability of the use of the thin-film storage tank, and can reduce or even avoid the setting of the support structure in the prior art, simplifying the structure of the thin-film storage tank.

[0014] In some possible implementation manners, the first sub-connection side is in surface contact with the main shielding film, and the second sub-connection side is in surface contact with the secondary shielding film.

[0015] In the example of this application, setting the first sub-connection side to be in surface contact with the main shielding film makes the contact area between the first sub-connection side and the main shielding film larger, which can make the connection reliability between the first sub-connection side and the main shielding film higher and ensure the connection reliability between the first heat insulation module and the main shielding film. The second sub-connection side is in surface contact with the secondary shielding film, making the contact area between the second sub-connection side and the secondary shielding film larger, which can make the connection reliability between the second sub-connection side and the secondary shielding film higher and ensure the connection reliability between the first heat insulation module and the secondary shielding film.

[0016] In some possible implementation manners, the main shielding film includes a plurality of connected main shielding sub-films, and the connection gap between two adjacent main shielding sub-films is located in the middle of the first sub-connection side. The secondary shielding film includes a plurality of connected secondary shielding sub-films, and the connection gap between two adjacent secondary shielding sub-films is located in the middle of the second sub-connection side.

[0017] In the example of this application, the connection gap between two adjacent main shielding sub-films is located in the middle of the first sub-connection side. Compared with the connection gap between two adjacent main shielding sub-films being located at the edge of the first sub-connection side, it can make the forces on two adjacent main shielding sub-films and the connection area of the first sub-connection side more uniform, and improve the connection reliability between the main shielding film and the first sub-connection side.

[0018] The connection modes of two adjacent secondary shielding sub-films to the second sub-connection side are similar, and the functions they perform are similar. The example of this application will not expand the description here.

[0019] In some possible implementation manners, the sealed cavity further includes a second sealed cavity, and the heat insulation module further includes a second heat insulation module. The thin-film storage tank further includes an outer tank layer and a secondary shielding film. The outer tank layer and the secondary shielding film layer cooperate to form the second sealed cavity. The first cavity wall includes the side of the secondary shielding film facing the outer tank layer, and the second cavity wall includes the side of the outer tank layer facing the secondary shielding film. A plurality of second heat insulation modules are sequentially arranged in the second sealed cavity. The second heat insulation module includes a third sub-connection side and a fourth sub-connection side that are oppositely arranged, and a third sub-contact surface and a fourth sub-contact surface that are oppositely arranged. The first connection side includes the third sub-connection side, the second connection side includes the fourth sub-connection side, the first contact surface includes the third sub-contact surface, and the second contact surface includes the fourth sub-contact surface. The third sub-connection side is fixedly connected to the secondary shielding film, the fourth sub-connection side is connected to the outer tank layer, and the third sub-contact surface and the fourth sub-contact surface intersect directly or indirectly.

[0020] In the example of this application, the secondary shielding film and the outer tank layer cooperate to form the second sealed cavity, and the second sealed cavity can provide an installation space for a plurality of second heat insulation modules. Since both the third sub-connection side and the fourth sub-connection side are part of the second heat insulation module, by fixedly connecting the third sub-connection side to the secondary shielding film and the fourth sub-connection side to the outer tank layer, different parts of the second heat insulation module are fixedly connected to the second sealed cavity, reducing the possibility of the second heat insulation module shaking in the second sealed cavity. Furthermore, the path for transmitting liquid loads in the second sealed cavity becomes more stable and reliable, ensuring the use reliability of the thin-film storage tank.

[0021] Since both the third sub-contact surface and the fourth sub-contact surface are also part of the second insulation module, the third sub-connection side is fixedly connected to the secondary shielding film through the third sub-contact surface, and the fourth sub-connection side is fixedly connected to the outer tank layer through the fourth sub-contact surface. The force acting on the third sub-connection side through the secondary shielding film and the force acting on the fourth sub-connection side through the outer tank layer can both be transmitted to the third sub-contact surface and the fourth sub-contact surface. The third sub-contact surface and the fourth sub-contact surface intersect directly or indirectly, causing the direction of the force transmitted to the third sub-contact surface and the fourth sub-contact surface to change. In comparison with the prior art where the four sides of the cross-section of the insulation module are perpendicular to each other and are prone to deformation under the action of force, in the example of the present application, the second insulation module is less likely to deform under the action of force and has stronger support ability, ensuring the use reliability of the thin-film storage tank. It can reduce or even avoid the setting of the support structure in the prior art, further simplifying the structure of the thin-film storage tank.

[0022] In some possible implementation manners, along the direction of the main shielding film towards the secondary shielding film, the first insulation module and the second insulation module are arranged in a staggered manner.

[0023] Compared with the alignment setting of the first insulation module and the second insulation module, in the example of the present application, setting the first insulation module and the second insulation module in a staggered manner can extend the heat transfer path between different insulation modules, thereby reducing the heat conduction efficiency between the interior of the thin-film storage tank and the external environment.

[0024] In addition, setting the first insulation module and the second insulation module in a staggered manner makes the support points provided by the first insulation module for the secondary shielding film and the support points provided by the second insulation module for the secondary shielding film arranged in a staggered manner along the direction of the main shielding film towards the secondary shielding film, which is beneficial to further improving the support strength of the thin-film storage tank.

[0025] In some possible implementation manners, a connecting member is provided on the side of the second insulation module facing the outer tank layer, and the connecting member is connected to the outer tank layer.

[0026] In the example of the present application, the connecting member is provided on the side of the second insulation module facing the outer tank layer, and the connecting member can be connected to the outer tank layer. Therefore, the reliable connection between the second insulation module and the outer tank layer can be achieved through the connecting member.

[0027] In some possible implementation manners, the second insulation module includes a first vacuum box. A first welding layer is provided on the side of the first vacuum box facing the outer tank layer, and a second welding layer is provided on the side of the outer tank layer facing the first vacuum box. The first welding layer and the second welding layer are welded.

[0028] In the example of this application, the first welding layer is arranged on one side of the first vacuum chamber facing the outer tank layer, and the second welding layer is arranged on the side of the outer tank layer facing the first vacuum chamber. Therefore, the reliable connection between the first vacuum chamber and the outer tank layer can be achieved by welding the first welding layer and the second welding layer.

[0029] In some possible implementation manners, the outer tank layer is provided with a first ventilation port. The first heat insulation module includes a second vacuum chamber. The thin-film storage tank further includes a first communication structure and a first connecting pipe. The first communication structure communicates with a plurality of second vacuum chambers, and the plurality of connected second vacuum chambers pass through the first ventilation port through the first connecting pipe and are connected to a first vacuum pump.

[0030] In the example of this application, two adjacent second vacuum chambers can be communicated through the first communication structure, and the plurality of connected second vacuum chambers are connected to the first vacuum pump through the first connecting pipe, so that the first vacuum pump can evacuate the plurality of connected second vacuum chambers through the first connecting pipe.

[0031] In some possible implementation manners, the first heat insulation module includes a second vacuum chamber, and a first support structure is arranged in the second vacuum chamber; and / or, the second heat insulation module includes a first vacuum chamber, and a second support structure is arranged in the first vacuum chamber.

[0032] In the example of this application, the first heat insulation module includes a second vacuum chamber, and a first support structure is arranged in the second vacuum chamber. By arranging the first support structure, the support strength of the second vacuum chamber can be further improved, and then the support strength of the thin-film storage tank can be improved. The function of the second support structure is similar to that of the first support structure, and the example of this application will not be described in detail here. Description of the Drawings

[0033] Figure 1 It is a schematic diagram of the mating structure of a heat insulation module installed in a sealed cavity provided by the example of this application.

[0034] Figure 2 It is a schematic diagram of the structure of a heat insulation module provided by the example of this application.

[0035] Figure 3 It is a schematic diagram of the internal structure of a heat insulation module provided by the example of this application.

[0036] Figure 4 It is a schematic diagram of the mating structure of a main shielding film, a secondary shielding film and a first heat insulation module provided by the example of this application.

[0037] Figure 5 It is a schematic diagram of the structure of a part of the tank wall of a thin-film storage tank provided by the example of this application.

[0038] Figure 6 It is a schematic diagram of the structure of a special-shaped heat insulation module provided by the example of this application.

[0039] Figure 7 Schematic diagram of another special-shaped heat insulation module provided for the examples of this application.

[0040] Figure 8 Schematic diagram of a plywood provided for the examples of this application.

[0041] Description of reference numerals:

[0042] 100, sealing cavity; 110, first cavity wall; 120, second cavity wall; 130, first sealing cavity; 131, main shielding film; 1311, main shielding sub-film; 132, secondary shielding film; 1321, secondary shielding sub-film; 140, second sealing cavity; 141, outer tank layer; 200, heat insulation module; 210, first connection side; 220, second connection side; 230, first contact surface; 240, heat insulation layer; 250, first moisture-proof layer; 260, first heat insulation module; 270, second heat insulation module; 280, special-shaped heat insulation module; 300, plywood; 310, third moisture-proof layer. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the examples of this application clearer, the technical solutions in the examples of this application will be clearly and completely described below with reference to the accompanying drawings in the examples of this application. Apparently, the described examples are some but not all of the examples of this application. All other examples obtained by those of ordinary skill in the art based on the examples in this application without making creative efforts shall fall within the scope of protection of this application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of the examples in this application are only for the purpose of describing specific examples and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0045] Referring to "example" in this context means that a specific feature, structure or characteristic described in connection with the example can be included in at least one example of this application. The phrase "example" appearing at various positions in the specification does not necessarily refer to the same example, nor is it an independent or alternative example mutually exclusive with other examples. Those skilled in the art explicitly and implicitly understand that the examples described herein can be combined with other examples.

[0046] In this text, the term "and / or" is merely a description of the associated relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: the existence of A, the simultaneous existence of A and B, and the existence of B. Additionally, in this text, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0047] The orientation terms appearing in the following descriptions are all the directions shown in the figures, and do not limit the specific structure of the thin-film storage tank of this application.

[0048] Furthermore, terms such as "first", "second", etc. in the description of this application, the claims, or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0049] In the description of this application, unless otherwise specified, "a plurality of" means two or more (including two). Similarly, "a plurality of groups" means two or more groups (including two groups).

[0050] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, the "connection" or "coupling" of mechanical structures can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection through a spacer, such as a fixed connection through screws, bolts, or other spacers; a physical connection can also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] The thin-film storage tank is mainly used for storing liquefied natural gas (LNG). Given the low-temperature physical properties of LNG, during the transportation of LNG using the thin-film storage tank, in order to reduce the vaporization of LNG, the thin-film storage tank is usually provided with an insulation module. The insulation module protects the thin-film storage tank and reduces the rate of heat exchange between the inside of the thin-film storage tank and the external environment.

[0052] Based on the structure of the existing insulation module, the cross-section of the insulation module is generally rectangular, and it is prone to deformation under the action of force, resulting in a low support strength of the insulation module. It is necessary to rely on a support structure to ensure the support strength of the thin-film storage tank and the reliability of its use, making the structure of the thin-film storage tank relatively complex.

[0053] Based on the above, this application provides an example of a thin-film storage tank.

[0054] To enable those skilled in the art to better understand the solution of this application, the following will clearly and completely describe the thin-film storage tank provided in the examples of this application in conjunction with the accompanying drawings.

[0055] Exemplarily, the examples of this application provide a thin-film storage tank.

[0056] This application provides a thin-film storage tank. Figure 1 It is a schematic diagram of the mating structure of an adiabatic module installed in a sealed cavity provided in the examples of this application. Figure 2 It is a schematic diagram of the structure of an adiabatic module provided in the examples of this application. Please refer to Figure 1 And Figure 2 As shown in, the thin-film storage tank includes a sealed cavity 100 and a plurality of adiabatic modules 200. The plurality of adiabatic modules 200 are fixedly installed in the sealed cavity 100 in sequence. The sealed cavity 100 includes a first cavity wall 110 and a second cavity wall 120 arranged opposite to each other. The adiabatic module 200 includes a first connection side 210 and a second connection side 220 arranged opposite to each other, and a first contact surface 230 and a second contact surface arranged opposite to each other. The first connection side 210 is fixedly connected to the first cavity wall 110, the second connection side 220 is fixedly connected to the second cavity wall 120, and the first contact surface 230 and the second contact surface intersect directly or indirectly.

[0057] The thin-film storage tank may include only one sealed cavity 100, or may include a plurality of sealed cavities 100 arranged at intervals. The adiabatic module 200 may be provided in at least one sealed cavity 100 of the thin-film storage tank.

[0058] The thin-film storage tank includes a main shielding film, a secondary shielding film, and an outer tank layer that cooperate with each other. The sealed cavity 100 may be located between the main shielding film and the secondary shielding film. At this time, the main shielding film is the first cavity wall 110, and the secondary shielding film is the second cavity wall 120. The sealed cavity 100 may also be located between the outer tank layer and the secondary shielding film. At this time, the secondary shielding film is the first cavity wall 110, and the outer tank layer is the second cavity wall 120.

[0059] The adiabatic module 200 includes a first connection side 210 and a second connection side 220 arranged opposite to each other. The first connection side 210 is fixedly connected to the first cavity wall 110, the second connection side 220 is fixedly connected to the second cavity wall 120, and a first contact surface 230 and a second contact surface arranged opposite to each other.

[0060] The adiabatic module 200 may include only a set of first contact surface 230 and second contact surface arranged opposite to each other, or may include multiple sets of first contact surface 230 and second contact surface arranged opposite to each other. The examples of this application do not make specific restrictions.

[0061] The first contact surface 230 connects the first end of the first connection side 210 and the first end of the second connection side 220, and the second contact surface connects the second end of the first connection side 210 and the second end of the second connection side 220.

[0062] The first contact surface 230 and the second contact surface intersect directly or indirectly, such that the first contact surface 230 and the second contact surface cooperate to form a first included angle, and the first included angle is greater than 0° and less than 90°.

[0063] Wherein, the direct intersection of the first contact surface 230 and the second contact surface means that the first connection side 210 is in line contact with the first cavity wall 110, and the second connection side 220 is in surface contact with the second cavity wall 120. At this time, the first contact surface 230 and the second contact surface intersect to form the first connection side 210, and a fillet can be formed at the intersection of the first contact surface 230 and the second contact surface, and the cross-section of the thermal insulation module 200 is triangular. Alternatively, the first connection side 210 is in surface contact with the first cavity wall 110, and the second connection side 220 is in line contact with the second cavity wall 120. At this time, the first contact surface 230 and the second contact surface intersect to form the second connection side 220, the cross-section of the thermal insulation module 200 is triangular, and a fillet can be formed at the intersection of the first contact surface 230 and the second contact surface.

[0064] The indirect intersection of the first contact surface 230 and the second contact surface means that the first contact surface 230 and the second contact surface cooperate to form a first included angle, and the extended surface of the first contact surface 230 intersects with the extended surface of the second contact surface. At this time, the first connection side 210 can be in surface contact with the first cavity wall 110, and the second connection side 220 is in surface contact with the second cavity wall 120. At this time, the cross-section of the thermal insulation module 200 can be trapezoidal.

[0065] For two adjacent thermal insulation modules 200, the first contact surface 230 of one thermal insulation module 200 is arranged close to the second contact surface of the other thermal insulation module 200. The first contact surface 230 of one thermal insulation module 200 and the second contact surface of the other thermal insulation module 200 can be in fit, parallel or at an angle, and the present application example does not make specific restrictions on this.

[0066] The connection manner of the first connection side 210 and the first cavity wall 110 is similar to the connection manner of the second connection side 220 and the second cavity wall 120. Exemplarily, the first connection side 210 can be fixedly connected to the first cavity wall 110 by riveting, welding, bonding or the like.

[0067] The thermal insulation module 200 is designed according to the size of the thin-film storage tank, and the size of the thermal insulation module 200 mainly depends on the size of the sealed cavity 100.

[0068] A plurality of thermal insulation modules 200 can be fixedly installed in the sealed cavity 100 along the axial direction or the radial direction of the thin-film storage tank.

[0069] In the example of this application, the sealed cavity 100 can provide an installation space for the thermal insulation module 200. Since the first cavity wall 110 and the second cavity wall 120 are part of the installation cavity, and the first connection side 210 and the second connection side 220 are part of the thermal insulation module 200, therefore, by fixedly connecting the first connection side 210 to the first cavity wall 110 and the second connection side 220 to the second cavity wall 120, different parts of the thermal insulation module 200 are fixedly connected to different cavity walls of the sealed cavity 100, reducing the possibility of the thermal insulation module 200 shaking in the sealed cavity 100 and ensuring the reliability of the use of the thin-film storage tank.

[0070] Since the first contact surface 230 and the second contact surface are also both part of the thermal insulation module 200, therefore, by fixedly connecting the first connection side 210 to the first cavity wall 110 and the second connection side 220 to the second cavity wall 120, the force acting on the first connection side 210 through the first cavity wall 110 and the force acting on the second connection side 220 through the second cavity wall 120 can both be transmitted to the first contact surface 230 and the second contact surface, and the first contact surface 230 and the second contact surface intersect directly or indirectly, causing the direction of the force transmitted to the first contact surface 230 and the second contact surface to change. Comparing with the prior art, the four sides of the cross-section of the thermal insulation module 200 are perpendicular to each other and are prone to deformation under the action of force. In the example of this application, the thermal insulation module 200 is less likely to deform under the action of force and has stronger supporting ability, which can ensure the reliability of the use of the thin-film storage tank, and can reduce or even avoid the setting of the support structure in the prior art, simplifying the structure of the thin-film storage tank.

[0071] Based on the thin-film storage tank provided by the above example, Figure 3 The following is a schematic internal structure diagram of a thermal insulation module provided by the example of this application. Please refer to Figure 3 , the thermal insulation module 200 includes a first moisture-proof layer 250 and a thermal insulation layer 240 connected to each other. The first moisture-proof layer 250 is provided on the side of the thermal insulation layer 240 facing the second cavity wall 120. Alternatively, the thermal insulation module 200 is a vacuum box.

[0072] The material of the first moisture-proof layer 250 can be polymer materials such as polyethylene, polypropylene, modified epoxy resin, polyurethane, polyvinyl chloride, etc., or other materials. The example of this application does not make specific restrictions on this.

[0073] When the material of the first moisture-proof layer 250 is a non-metal material such as a polymer, the thermal insulation module 200 can be connected to the second cavity wall 120 by bonding, or the thermal insulation module 200 can also be connected to the second cavity wall 120 by a combination of bonding and riveting.

[0074] The manufacturing material of the thermal insulation layer 240 can be at least one of thermal insulation materials such as polyurethane foam, glass wool, aerogel, etc.

[0075] The heat insulation layer 240 can reduce the combined heat transfer coefficient between the side of the first cavity wall 110 facing away from the secondary heat insulation layer 240 and the side of the second cavity wall 120 facing away from the heat insulation layer 240. At this time, the heat insulation module 200 can be directly or indirectly fixedly connected to the first cavity wall 110.

[0076] When the heat insulation module 200 is a vacuum chamber, the box body of the vacuum chamber can be made of stainless steel material. At this time, the vacuum chamber can be connected to the first cavity wall 110 and the second cavity wall 120 by welding or bonding.

[0077] Based on the characteristics of the vacuum, the vacuum chamber can reduce the combined heat transfer coefficient between the side of the first cavity wall 110 facing away from the vacuum chamber and the side of the second cavity wall 120 facing away from the second vacuum chamber.

[0078] In the example of this application, the heat insulation module 200 can include a first moisture-proof layer 250 and a heat insulation layer 240 connected to each other. The first moisture-proof layer 250 is arranged on the side of the heat insulation layer 240 facing the second cavity wall 120, which can reduce the possibility of moisture and the like entering the heat insulation layer 240 from the second cavity wall 120, ensure the use reliability of the heat insulation layer 240, and make the heat exchange efficiency between the inside of the thin-film storage tank and the external environment relatively low.

[0079] The heat insulation module 200 can also be a vacuum chamber. The vacuum chamber is connected between the first cavity wall 110 and the second cavity wall 120. Based on the physical characteristics of the vacuum chamber, the vacuum chamber can reduce the combined heat transfer coefficient between the first cavity wall 110 and the second cavity wall 120, and make the heat exchange efficiency between the inside of the thin-film storage tank and the external environment relatively low.

[0080] Based on the thin-film storage tank provided in the above example, Figure 4 For a schematic diagram of the cooperation structure of a main shielding film, a secondary shielding film and a first heat insulation module provided in the example of this application, please refer to Figure 4The sealed cavity 100 includes a first sealed cavity 130, and the thermal insulation module 200 includes a first thermal insulation module 260. The thin-film storage tank includes a main shielding film 131, a secondary shielding film 132, and the first thermal insulation module 260. The secondary shielding film 132 is spaced apart from the main shielding film 131. The secondary shielding film 132 and the main shielding film 131 cooperate to form the first sealed cavity 130. The first cavity wall includes the side of the main shielding film facing the secondary shielding film, and the second cavity wall includes the side of the secondary shielding film facing the main shielding film. A plurality of first thermal insulation modules 260 are sequentially arranged in the first sealed cavity 130. The first thermal insulation module 260 includes a relatively arranged first sub-connection side and a second sub-connection side, and a relatively arranged first sub-contact surface and a second sub-contact surface. The first connection side 210 includes the first sub-connection side, the second connection side 220 includes the second sub-connection side, the first contact surface 230 includes the first sub-contact surface, and the second contact surface includes the second sub-contact surface. The first sub-connection side is fixedly connected to the main shielding film 131, the second sub-connection side is fixedly connected to the secondary shielding film 132, and the first sub-contact surface and the second sub-contact surface intersect directly or indirectly.

[0081] The material of the main shielding film 131 and the material of the secondary shielding film 132 may be the same, and both may be made of materials such as austenitic stainless steel and nickel-iron alloy. The material of the main shielding film 131 and the material of the secondary shielding film 132 may also be different. For example, the main shielding film 131 may be made of a metallic material, and the secondary shielding film 132 may be made of a composite material. The present application example does not make specific limitations on this.

[0082] The main shielding film 131 and other structures enclose a containing cavity for containing LNG. The main shielding film 131 and the secondary shielding film 132 cooperate to form the first sealed cavity 130. The first sealed cavity 130 may be a vacuum cavity, or the gas pressure in the first sealed cavity 130 may also be equal to the gas pressure of the external environment. The present application example does not make specific limitations on this.

[0083] The first thermal insulation module 260 may be made of a thermal insulation material such as polyurethane, or the first thermal insulation module 260 may also be a second vacuum box. The present application example does not make specific limitations on this.

[0084] Regarding the structure of the first thermal insulation module, please refer to the relevant description of the thermal insulation module described above. The present application example does not expand the description here.

[0085] In the example of this application, the main shielding film 131 and the secondary shielding film 132 cooperate to form the first sealing cavity 130, and the first sealing cavity 130 can provide an installation space for a plurality of first heat insulation modules 260. Since both the first sub-connection side and the second sub-connection side are part of the first heat insulation module 260, therefore, by fixedly connecting the first sub-connection side to the main shielding film 131 and the second sub-connection side to the secondary shielding film 132, different parts of the first heat insulation module 260 are fixedly connected to the cavity wall of the first sealing cavity 130, reducing the possibility of the first heat insulation module 260 shaking in the first sealing cavity 130 and ensuring the reliability of the use of the thin-film storage tank.

[0086] Since both the first sub-contact surface and the second sub-contact surface are also part of the first heat insulation module 260, therefore, by fixedly connecting the first sub-connection side to the main shielding film 131 and the second sub-connection side to the secondary shielding film 132, the force acting on the first sub-connection side through the main shielding film 131 and the force acting on the second sub-connection side through the secondary shielding film 132 can both be transmitted to the first sub-contact surface and the second sub-contact surface, and the first sub-contact surface and the second sub-contact surface intersect directly or indirectly, causing the direction of the force transmitted to the first sub-contact surface and the second sub-contact surface to change. Compared with the prior art where the four sides of the cross-section of the heat insulation module are perpendicular to each other and are prone to deformation under the action of force, in the example of this application, the first heat insulation module 260 is less likely to deform under the action of force and has stronger supporting ability, which can ensure the reliability of the use of the thin-film storage tank and can reduce or even avoid the setting of the support structure in the prior art, simplifying the structure of the thin-film storage tank.

[0087] Based on the thin-film storage tank provided in the above example, please refer to Figure 4 , the first sub-connection side is in surface contact with the main shielding film 131, and the second sub-connection side is in surface contact with the secondary shielding film 132.

[0088] The contact area between the first sub-connection side and the main shielding film 131 can be greater than the contact area between the second sub-connection side and the secondary shielding film 132, and the contact area between the first sub-connection side and the main shielding film 131 can be less than the contact area between the second sub-connection side and the secondary shielding film 132.

[0089] In the example of this application, the first sub-connection side is set to be in surface contact with the main shielding film 131, so that the contact area between the first sub-connection side and the main shielding film 131 is relatively large, which can make the connection reliability between the first sub-connection side and the main shielding film 131 higher, and ensure the connection reliability between the first heat insulation module 260 and the main shielding film 131. The second sub-connection side is in surface contact with the secondary shielding film 132, so that the contact area between the second sub-connection side and the secondary shielding film 132 is relatively large, which can make the connection reliability between the second sub-connection side and the secondary shielding film 132 higher, and ensure the connection reliability between the first heat insulation module 260 and the secondary shielding film 132.

[0090] Based on the thin-film storage tank provided in the above example, please refer to Figure 4 , the main shielding film 131 includes a plurality of connected main shielding sub-films 1311, and the connection gap between two adjacent main shielding sub-films 1311 is located in the middle of the first sub-connection side. The secondary shielding film 132 includes a plurality of connected secondary shielding sub-films 1321, and the connection gap between two adjacent secondary shielding sub-films 1321 is located in the middle of the second sub-connection side.

[0091] The connection method between the main shielding film 131 and the first sub-connection side is similar to the connection method of the secondary shielding film 132 connected to the second sub-connection side. Next, only the connection between the main shielding film 131 and the first sub-connection side will be described as an example.

[0092] The main shielding film 131 includes a plurality of connected main shielding sub-films 1311. Two adjacent main shielding sub-films 1311 can be connected by welding, bonding, or other methods, as long as the sealing performance and connection reliability at the connection of two adjacent main shielding sub-films 1311 can be ensured. In the example of this application, only the welding connection of two adjacent main shielding sub-films 1311 and the welding of the main shielding film 131 and the first heat insulation module 260 are described as an example.

[0093] The middle part of the first sub-connection side refers to the part between the position of the first sub-connection side close to the first sub-contact surface and the position of the first sub-connection side close to the second sub-contact surface.

[0094] The connection gap between two adjacent main shielding sub-films 1311 being located in the middle of the first sub-connection side means that the intersection edge of the first sub-connection side and the first sub-contact surface does not contact the connection gap between two adjacent main shielding films 131, and the intersection edge of the first sub-connection side and the second sub-contact surface also does not contact the connection gap between two adjacent main shielding films 131.

[0095] In the example of this application, the connection gap between two adjacent main shielding sub-films 1311 is located in the middle of the first sub-connection side. Compared with the connection gap between two adjacent main shielding sub-films 1311 being located at the edge of the first sub-connection side, it can make the forces on two adjacent main shielding sub-films 1311 and the connection area of the first sub-connection side more uniform, and improve the connection reliability between the main shielding film 131 and the first sub-connection side.

[0096] The connection manner between two adjacent secondary shielding sub-films 1321 and the second sub-connection side is similar, and the functions are similar. The example of this application will not be described in detail here.

[0097] Based on the thin-film storage tank provided by the above example, Figure 5 is a schematic structural diagram of a part of the tank wall of a thin-film storage tank provided by the example of this application. The outer tank layer, the secondary shielding film, the main shielding film, the first thermal insulation module, and the second thermal insulation module cooperate to form the tank wall of the thin-film storage tank.

[0098] Please refer to Figure 5 , the sealing cavity further includes a second sealing cavity 140, and the thermal insulation module further includes a second thermal insulation module 270. The thin-film storage tank further includes an outer tank layer 141 and a secondary shielding film. The outer tank layer 141 and the secondary shielding film 132 cooperate to form the second sealing cavity 140. The first cavity wall 110 includes the side of the secondary shielding film 132 facing the outer tank layer 141, and the second cavity wall 120 includes the side of the outer tank layer 141 facing the secondary shielding film 132. A plurality of second thermal insulation modules 270 are sequentially arranged in the second sealing cavity 140. The second thermal insulation module 270 includes a relatively arranged third sub-connection side and a fourth sub-connection side, and a relatively arranged third sub-contact surface and a fourth sub-contact surface. The first connection side 210 includes the third sub-connection side, the second connection side 220 includes the fourth sub-connection side, the first contact surface 230 includes the third sub-contact surface, and the second contact surface includes the fourth sub-contact surface. The third sub-connection side is fixedly connected to the secondary shielding film 132, the fourth sub-connection side is connected to the outer tank layer 141, and the third sub-contact surface and the fourth sub-contact surface intersect directly or indirectly.

[0099] The outer tank layer 141 and the secondary shielding film 132 cooperate to form the second sealing cavity 140. The second sealing cavity 140 can be a vacuum cavity, or the gas pressure in the second sealing cavity 140 can also be equal to the gas pressure of the external environment. The example of this application does not make specific limitations on this.

[0100] A second moisture-proof layer is provided on the side of the outer tank layer 141 facing the secondary shielding film 132. The function of the second moisture-proof layer is similar to that of the first moisture-proof layer. The example of this application will not be described in detail here.

[0101] The outer tank layer 141 can be made of concrete, or can be made of steel, composite materials, etc.

[0102] The second adiabatic module 270 is similar in structure to the first adiabatic module 260. The size specifications of the second adiabatic module 270 may be the same as or different from those of the first adiabatic module 260. In the examples of this application, only the case where the size specifications of the second adiabatic module 270 are the same as those of the first adiabatic module 260 is described. The installation method of the second adiabatic module 270 is similar to that of the first adiabatic module 260, and this is not expanded in the examples of this application.

[0103] The second adiabatic module 270 is designed according to the size of the thin-film storage tank, and the size of the second adiabatic module 270 mainly depends on the size of the second sealing cavity 140.

[0104] Multiple second adiabatic modules 270 can be fixedly installed in the second sealing cavity 140 along the axial or radial direction of the thin-film storage tank.

[0105] The second adiabatic module 270 can be made of materials such as polyurethane materials, or the second adiabatic module 270 can also be the first vacuum box, and this is not specifically limited in the examples of this application.

[0106] The second adiabatic module 270 includes a relatively arranged third sub-connection side and fourth sub-connection side, and a relatively arranged third sub-contact surface and fourth sub-contact surface.

[0107] The third sub-connection side is connected to the side of the secondary shielding film 132 facing away from the first adiabatic module 260, and the third sub-connection side and the secondary shielding film 132 can be fixedly connected by bonding, welding, riveting and other methods.

[0108] The fourth sub-connection side is connected to the side of the outer tank layer 141 facing the secondary shielding film 132, and the fourth sub-connection side can be fixedly connected to the outer tank layer 141 by welding, riveting, threaded connection and other methods.

[0109] The third sub-contact surface and the fourth sub-contact surface intersect directly or indirectly, so that the third sub-contact surface and the fourth sub-contact surface cooperate to form a second included angle, and the second included angle is greater than 0° and less than 90°.

[0110] Among them, the direct intersection of the third sub-contact surface and the fourth sub-contact surface means that the third sub-connection side is in line contact with the secondary shielding film 132, and the fourth sub-connection side is in surface contact with the outer tank layer 141. At this time, the third sub-contact surface and the fourth sub-contact surface intersect to form the third sub-connection side, and the cross-section of the second adiabatic module 270 is triangular. A fillet can be formed at the intersection of the third sub-contact surface and the fourth sub-contact surface. Or, the third sub-connection side is in surface contact with the secondary shielding film 132, and the fourth sub-connection side is in line contact with the outer tank layer 141. At this time, the third sub-contact surface and the fourth sub-contact surface intersect to form the fourth sub-connection side. A fillet can be formed at the intersection of the third sub-contact surface and the fourth sub-contact surface, and the cross-section of the second adiabatic module 270 is triangular.

[0111] The indirect intersection of the third sub-contact surface and the fourth sub-contact surface means that the third sub-contact surface and the fourth sub-contact surface cooperate to form a second included angle, and the extended surfaces of the third sub-contact surface and the fourth sub-contact surface can intersect. At this time, the third sub-connection side can be in surface contact with the secondary shielding film 132, and the fourth sub-connection side is in surface contact with the outer tank layer 141. At this time, the cross-section of the second heat insulation module 270 can be trapezoidal.

[0112] In the example of the present application, the secondary shielding film 132 and the outer tank layer 141 cooperate to form a second sealing cavity 140, and the second sealing cavity 140 can provide an installation space for a plurality of second heat insulation modules 270. Since both the third sub-connection side and the fourth sub-connection side are part of the second heat insulation module 270, by fixedly connecting the third sub-connection side to the secondary shielding film 132 and the fourth sub-connection side to the outer tank layer 141, different parts of the second heat insulation module 270 are fixedly connected to the second sealing cavity 140, reducing the possibility of the second heat insulation module 270 shaking in the second sealing cavity 140. Furthermore, the path for transmitting liquid loads in the second sealing cavity 140 becomes more stable and reliable, ensuring the reliability of the thin-film storage tank during use.

[0113] Since both the third sub-contact surface and the fourth sub-contact surface are also part of the second heat insulation module 270, by fixedly connecting the third sub-connection side to the secondary shielding film 132 and the fourth sub-connection side to the outer tank layer 141, the force acting on the third sub-connection side through the secondary shielding film 132 and the force acting on the fourth sub-connection side through the outer tank layer 141 can both be transmitted to the third sub-contact surface and the fourth sub-contact surface. Moreover, the third sub-contact surface and the fourth sub-contact surface intersect directly or indirectly, causing the direction of the force transmitted to the third sub-contact surface and the fourth sub-contact surface to change. Compared with the prior art where the four sides of the cross-section of the heat insulation module are perpendicular to each other and are prone to deformation under the action of force, in the example of the present application, the second heat insulation module 270 is less likely to deform under the action of force, has stronger supporting ability, can ensure the reliability of the thin-film storage tank during use, and can reduce or even avoid the setting of the support structure in the prior art, further simplifying the structure of the thin-film storage tank.

[0114] In the example of the present application, it is possible to only set the first sub-contact surface and the second sub-contact surface of the first heat insulation module 260 to intersect directly or indirectly, or only set the third sub-contact surface and the fourth sub-contact surface of the second heat insulation module 270 to intersect directly or indirectly, or it is also possible to simultaneously set the first sub-contact surface and the second sub-contact surface of the first heat insulation module 260 to intersect directly or indirectly, and the third sub-contact surface and the fourth sub-contact surface of the second heat insulation module 270 to intersect directly or indirectly. The example of the present application does not make specific restrictions on this.

[0115] Based on the thin-film storage tank provided in the above example, please refer to Figure 5, along the direction from the primary shielding film 131 toward the secondary shielding film 132 , the first insulation module 260 and the second insulation module 270 are staggeredly arranged.

[0116] Along the direction from the main shielding film 131 to the secondary shielding film 132, the projection of the first insulation module 260 may partially overlap with the projection of the second insulation module 270, or the projection of the first insulation module 260 may not overlap with the projection of the second insulation module 270. This application example does not impose any specific restrictions on this.

[0117] Compared with the aligned arrangement of the first insulation module 260 and the second insulation module 270, in the example of the present application, the first insulation module 260 and the second insulation module are staggered, which can extend the heat transfer path between different insulation modules, thereby reducing the heat conduction efficiency between the interior of the membrane storage tank and the external environment.

[0118] In addition, the first insulation module 260 and the second insulation module are staggered so that along the direction from the main shielding film 131 toward the secondary shielding film 132, the support points provided by the first insulation module 260 for the secondary shielding film 132 and the support points provided by the second insulation module 270 for the secondary shielding film 132 are arranged alternately, which is beneficial to further improve the supporting strength of the membrane storage tank.

[0119] The structures of the first sealed cavity 130 and the second sealed cavity 140 are similar, and the following description will only take the second sealed cavity 140 as an example.

[0120] Based on the membrane storage tank provided in the above example, a connecting piece (not shown in the figure) is provided on the side of the second insulation module 270 facing the outer tank layer 141 , and the connecting piece is connected to the outer tank layer 141 .

[0121] A connecting piece is provided on the side of the second insulation module 270 facing the outer tank layer 141 , that is, the connecting piece is provided on the fourth sub-connecting side.

[0122] The connecting member may be a threaded member, a riveted member, etc. The connecting member may be integrally formed with the second insulation module 270, or the connecting member may be fixedly connected to the second insulation module 270 by welding or other methods, and this application example does not impose any specific restrictions on this.

[0123] When the connecting piece is a threaded piece, a nut or other threaded structure is pre-embedded on the side of the outer tank layer 141 facing the second insulation module 270, so that the connecting piece extends into the outer tank layer 141 and is threadedly connected to the threaded structure, thereby realizing the connection between the outer tank layer 141 and the second insulation module 270.

[0124] In the case where the connecting member is a riveted member, a metal plate-like structure may be embedded on the side of the outer tank layer 141 facing the second heat insulation module 270. The plate-like structure is provided with through holes so that the connecting member can extend into the outer tank layer 141 and be riveted to the plate-like structure, realizing the connection between the outer tank layer 141 and the second heat insulation module 270.

[0125] Figure 8 The following is a schematic structural diagram of a plywood provided by an example of the present application. Please refer to Figure 8 , the connecting member may also be a plywood 300, and the plywood 300 is connected to the side of the second heat insulation module 270 facing the outer tank layer 141. The plywood 300 can be connected to the fourth sub-connection side by means of bonding. The side of the plywood 300 facing away from the second heat insulation module 270 can be directly or indirectly connected to the outer tank layer 141, realizing the connection between the outer tank layer 141 and the second heat insulation module 270.

[0126] In the example of the present application, the structure of the plywood 300 may be the same as or different from the structure of the existing plywood, and the present application example does not make specific restrictions on this.

[0127] The plywood 300 mentioned here can also be used for at least one of between the second heat insulation module 270 and the secondary shielding film 132, between the first heat insulation module 260 and the secondary shielding film 132, and between the first heat insulation module 260 and the main shielding film 131. The present application example does not make restrictions on this.

[0128] Exemplarily, the plywood 300 includes a third moisture-proof layer 310 and a plurality of wood layers connected by gluing. The third moisture-proof layer 310 can be disposed between adjacent wood layers, or can be disposed on the side of the wood layer closest to the secondary shielding film 132 among the plurality of wood layers facing the secondary shielding film 132, or on the side of the wood layer closest to the outer tank layer 141 among the plurality of wood layers facing the outer tank layer 141. There can be one or more third moisture-proof layers 310, and the present application example does not make specific restrictions on this.

[0129] By providing that the plywood 300 includes a third moisture-proof layer 310 and a plurality of wood layers connected by gluing, the possibility of water vapor transferring from the outer tank layer 141 to the secondary shielding film 132 through the plywood 300 can be reduced or even avoided, further ensuring the use reliability of the second heat insulation module 270 and making the heat insulation performance of the thin-film storage tank more reliable.

[0130] The connecting member mentioned in the present application includes at least one of a threaded member, a riveted member, and the plywood 300.

[0131] In the example of the present application, the connecting piece is arranged on the side of the second insulation module 270 facing the outer tank layer 141, and the connecting piece can be connected to the outer tank layer 141. Therefore, a reliable connection between the second insulation module 270 and the outer tank layer 141 can be achieved through the connecting piece.

[0132] The second vacuum box can be welded to the main shielding film 131 and / or the secondary shielding film 132, and the first vacuum box can be welded to the secondary shielding film 132 and / or the outer tank layer 141. At this time, the structure of the second vacuum box is similar to that of the first vacuum box. Next, the structure of the second vacuum box and the first vacuum box will be described by taking the welding of the first vacuum box and the outer tank layer 141 as an example.

[0133] Exemplarily, the second insulation module 270 includes a first vacuum box, a first welding layer is provided on the side of the first vacuum box facing the outer tank layer 141, a second welding layer is provided on the side of the outer tank layer 141 facing the first vacuum box, and the first welding layer is welded to the second welding layer.

[0134] The box wall of the first vacuum box close to the outer tank layer 141 includes a first welding layer and a vacuum layer. The first welding layer faces the outer tank layer 141, and the vacuum layer is arranged away from the outer tank layer 141. The thickness of the first welding layer needs to ensure that after the first welding layer and the second welding layer are welded, it will not affect the airtightness of the vacuum layer, thereby ensuring the performance of the first vacuum box.

[0135] The second welding layer is arranged on the side of the outer tank layer 141 facing the first vacuum box. The second welding layer is a metal sheet structure or strip structure preset on the outer tank layer 141, and the second welding layer can be welded and connected with the first welding layer.

[0136] In the example of the present application, the first welding layer is arranged on the side of the first vacuum box facing the outer tank layer 141, and the second welding layer is arranged on the side of the outer tank layer 141 facing the first vacuum box. Therefore, the welding connection between the first welding layer and the second welding layer can realize a reliable connection between the first vacuum box and the outer tank layer 141.

[0137] When the first insulation module 260 includes a second vacuum box, the connection method between different second vacuum boxes is similar to the connection method between different first vacuum boxes when the second insulation module 270 includes a first vacuum box. The following description will only take the second vacuum box as an example.

[0138] The outer tank layer 141 is provided with a first vent, the first insulation module 260 includes a second vacuum box, and the membrane storage tank also includes a first connecting structure and a first connecting pipe. The first connecting structure connects multiple second vacuum boxes, and the multiple connected second vacuum boxes pass through the first vent through the first connecting pipe and are connected to the first vacuum pump.

[0139] The first ventilation port can be provided with one, or multiple first ventilation ports can be provided at intervals. The number of the first ventilation ports is equal to the number of the first connecting pipes. One first vacuum pump can be connected to only one first connecting pipe, or one first vacuum pump can be connected to multiple first connecting pipes. The present application example does not make specific restrictions on this.

[0140] When there is one first ventilation port, all the second vacuum chambers in the first sealing cavity 130 can be connected in series and finally connected to the first vacuum pump through the first connecting pipe. Alternatively, the second vacuum chambers in the first sealing cavity 130 can be partially connected in series to form multiple series groups, and the multiple series groups are connected in parallel through the first connecting pipe to the first vacuum pump.

[0141] The first communication structure can be a valve structure, such as an intercommunication valve, or the first communication structure can be a communication pipe. The present application example does not make restrictions on the specific structure of the first communication structure.

[0142] There are multiple first communication structures, and one first communication structure can communicate two adjacent second vacuum chambers.

[0143] The second vacuum chamber closest to the first vacuum pump among the multiple second vacuum chambers is connected to the first vacuum pump through the first connecting pipe.

[0144] Since the second vacuum chamber is arranged in the first sealing cavity 130 and the first ventilation port is arranged in the outer tank layer 141, the first connecting pipe connecting the second vacuum chamber and the first ventilation port needs to penetrate through the secondary shielding film 132 and the outer tank layer 141, and the joints of the first connecting pipe with the secondary shielding film 132 and the outer tank layer 141 are respectively sealed to ensure the sealing performance of the first sealing cavity 130 and the second sealing cavity 140.

[0145] In the example of the present application, two adjacent second vacuum chambers can be communicated through the first communication structure, and the communicated multiple second vacuum chambers are connected to the first vacuum pump through the first connecting pipe, so that the first vacuum pump can evacuate the communicated multiple second vacuum chambers through the first connecting pipe.

[0146] Based on the thin-film storage tank provided by the above example, the first sealing cavity 130 is a vacuum cavity. And / or, the second sealing cavity 140 is a vacuum cavity.

[0147] At least one of the first sealing cavity 130 and the second sealing cavity 140 is a vacuum cavity.

[0148] The outer tank layer 141 can be provided with a second ventilation port, the second ventilation port is arranged at an interval from the first ventilation port, the second ventilation port is connected to the first sealing cavity 130 through a second connecting pipe, and the end of the second connecting pipe away from the first sealing cavity 130 is connected to a second vacuum pump. The first sealing cavity 130 can be evacuated through the second vacuum pump so that the first sealing cavity 130 becomes a vacuum cavity.

[0149] The operation of evacuating the second sealing cavity 140 is similar to the way of evacuating the first sealing cavity 130, and the examples of this application will not be elaborated here.

[0150] In the examples of this application, by setting the first sealing cavity 130 and / or the second sealing cavity 140 as vacuum cavities, and providing a first heat insulation module 260 in the first sealing cavity 130 and a second heat insulation module 270 in the second sealing cavity 140, the heat exchange efficiency between the inside of the thin-film storage tank and the external environment can be further reduced, and the heat preservation performance of the thin-film storage tank can be further improved.

[0151] The thin-film storage tank includes a cooperating side tank wall and bottom tank wall. Correspondingly, the sealing cavity includes a first sub-cavity parallel to the side tank wall and a second sub-cavity parallel to the bottom tank wall, and the first sub-cavity communicates with the second sub-cavity.

[0152] Figure 6 For a schematic structural view of a special-shaped heat insulation module provided by the examples of this application, please refer to Figure 6 , at the connection between the first sub-cavity and the second sub-cavity, a corresponding special-shaped heat insulation module 280 can be provided. The special-shaped heat insulation module 280 includes a first connection surface and a second connection surface that are perpendicular to each other. The first connection surface is fixedly connected to the cavity wall of the first sub-cavity close to the tank side wall, and the second connection surface is fixedly connected to the cavity wall of the second sub-cavity close to the tank bottom wall. The special-shaped heat insulation module 280 is generally in an "L" shape. Or, Figure 7 For another schematic structural view of a special-shaped heat insulation module provided by the examples of this application, please refer to Figure 7 , two first heat insulation modules 260 are connected and cooperated to form a special-shaped heat insulation module 280, wherein the first connection side 210 of one heat insulation module 200 is perpendicular to the first connection side 210 of the other heat insulation module 200.

[0153] The connection manner of the special-shaped heat insulation module 280 to the cavity wall of the sealing cavity 100 is similar to the connection manner of the heat insulation module 200 to the cavity wall of the sealing cavity 100, and the examples of this application will not be elaborated here.

[0154] Based on the thin-film storage tank provided by the above examples, the first heat insulation module 260 includes a second vacuum box, and a first support structure is provided in the second vacuum box; and / or, the second heat insulation module 270 includes a first vacuum box, and a second support structure is provided in the first vacuum box.

[0155] The first support structure is similar to the second support structure. Next, only the first support structure will be described as an example.

[0156] The first support structure can be a reinforcing rib, a support column or other structures. One end of the first support is connected to the side of the second vacuum chamber facing the main shielding film 131, and the other end of the first support is connected to the side of the second vacuum chamber facing the secondary shielding film 132.

[0157] One or more first supports can be provided in the second vacuum chamber. Taking the first support as a reinforcing rib as an example, the reinforcing rib can be connected to the side wall of the second vacuum chamber, or the reinforcing rib can be provided in the middle of the second vacuum chamber, independent of any side wall of the second vacuum chamber.

[0158] When a plurality of reinforcing ribs are provided in the second vacuum chamber, the plurality of reinforcing ribs do not contact each other, and the box body of the second vacuum chamber divided by the plurality of reinforcing ribs includes a plurality of communicating sub-chambers.

[0159] In the example of the present application, the first thermal insulation module 260 includes a second vacuum chamber, and a first support structure is provided in the second vacuum chamber. By providing the first support structure, the support strength of the second vacuum chamber can be further improved, and thus the support strength of the thin film storage tank can be improved. The function of the second support structure is similar to that of the first support structure, and the description thereof will not be expanded herein in the example of the present application.

[0160] A reflective screen can be provided in the second vacuum chamber. The reflective screen can be an aluminum foil, or a structure formed by compounding an aluminum foil and a heat insulating material.

[0161] By providing a reflective screen in the second vacuum chamber, the absorption and emission of thermal radiation can be reduced, and thus the heat exchange efficiency between the inside of the thin film storage tank and the external environment can be reduced.

[0162] The surfaces of the secondary shielding film 132 and the main shielding film 131 can reduce the surface emissivity by means of polishing, nickel plating, silver plating, etc., so as to reduce the heat exchange efficiency between the inside of the thin film storage tank and the external environment and ensure the heat preservation performance of the thin film storage tank.

[0163] When the first thermal insulation modules 260 are arranged at intervals, a third support structure can be provided between two adjacent first thermal insulation modules 260. When the second thermal insulation modules 270 are arranged at intervals, a fourth support structure can be provided between two adjacent second thermal insulation modules 270. The functions of the third support structure and the fourth support structure are similar to those of the first support structure, and the description thereof will not be expanded herein in the example of the present application.

[0164] Finally, it should be noted that the above embodiments are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A thin-film storage tank, characterized in that, It includes a sealed cavity and multiple heat insulation modules, and the multiple heat insulation modules are fixedly installed in the sealed cavity in sequence; The sealed cavity includes a first cavity wall and a second cavity wall arranged oppositely; The heat insulation module includes a first connection side and a second connection side arranged oppositely, and a first contact surface and a second contact surface arranged oppositely. The first connection side is fixedly connected to the first cavity wall, the second connection side is fixedly connected to the second cavity wall, and the first contact surface and the second contact surface intersect directly or indirectly.

2. The thin-film storage tank according to claim 1, wherein, The heat insulation module includes a first moisture-proof layer and a heat insulation layer connected to each other, and the first moisture-proof layer is arranged on the side of the heat insulation layer facing the second cavity wall; or, The heat insulation module is a vacuum box.

3. The thin-film storage tank according to claim 1 or 2, characterized in that, The sealed cavity includes a first sealed cavity, and the heat insulation module includes a first heat insulation module; The thin-film storage tank includes a main shielding film and a secondary shielding film. The secondary shielding film is arranged at an interval from the main shielding film, and the secondary shielding film and the main shielding film cooperate to form the first sealed cavity. The first cavity wall includes the side of the main shielding film facing the secondary shielding film, and the second cavity wall includes the side of the secondary shielding film facing the main shielding film; Multiple first heat insulation modules are arranged in the first sealed cavity in sequence. The first heat insulation module includes a first sub-connection side and a second sub-connection side arranged oppositely, and a first sub-contact surface and a second sub-contact surface arranged oppositely. The first connection side includes the first sub-connection side, the second connection side includes the second sub-connection side, the first contact surface includes the first sub-contact surface, the second contact surface includes the second sub-contact surface. The first sub-connection side is fixedly connected to the main shielding film, the second sub-connection side is fixedly connected to the secondary shielding film, and the first sub-contact surface and the second sub-contact surface intersect directly or indirectly.

4. The thin-film storage tank according to claim 3, characterized in that, The first sub-connection side is in surface contact with the main shielding film, and the second sub-connection side is in surface contact with the secondary shielding film.

5. The thin-film storage tank according to claim 3, wherein The main shielding film includes multiple connected main shielding sub-films, and the connection gap between two adjacent main shielding sub-films is located in the middle of the first sub-connection side; The secondary shielding film includes multiple connected secondary shielding sub-films, and the connection gap between two adjacent secondary shielding sub-films is located in the middle of the second sub-connection side.

6. The thin-film storage tank according to claim 3, wherein The sealed cavity further includes a second sealed cavity, and the heat insulation module further includes a second heat insulation module; The thin-film storage tank includes an outer tank layer and a secondary shielding film, and the outer tank layer and the secondary shielding film layer cooperate to form the second sealed cavity. The first cavity wall includes the side of the secondary shielding film facing the outer tank layer, and the second cavity wall includes the side of the outer tank layer facing the secondary shielding film; A plurality of the second heat insulation modules are sequentially arranged in the second sealing cavity. The second heat insulation module includes a third sub-connection side and a fourth sub-connection side which are oppositely arranged, and a third sub-contact surface and a fourth sub-contact surface which are oppositely arranged. The first connection side includes the third sub-connection side, the second connection side includes the fourth sub-connection side, the first contact surface includes the third sub-contact surface, and the second contact surface includes the fourth sub-contact surface. The third sub-connection side is fixedly connected to the secondary shielding film, the fourth sub-connection side is connected to the outer tank layer, and the third sub-contact surface and the fourth sub-contact surface intersect directly or indirectly.

7. The thin-film storage tank according to claim 6, characterized in that, Along the direction of the main shielding film towards the secondary shielding film, the first heat insulation module and the second heat insulation module are arranged in a staggered manner.

8. The thin-film storage tank according to claim 6, wherein A connecting member is provided on one side of the second heat insulation module facing the outer tank layer, and the connecting member is connected to the outer tank layer.

9. The thin-film storage tank according to claim 6, wherein, The second heat insulation module includes a first vacuum box. A first welding layer is provided on one side of the first vacuum box facing the outer tank layer, and a second welding layer is provided on one side of the outer tank layer facing the first vacuum box. The first welding layer and the second welding layer are welded together.

10. The thin-film storage tank according to claim 6, characterized in that, The outer tank layer is provided with a first ventilation port, and the first heat insulation module includes a second vacuum box; The thin film storage tank further includes a first communication structure and a first connecting pipe. The first communication structure communicates a plurality of the second vacuum boxes, and the plurality of communicated second vacuum boxes pass through the first ventilation port through the first connecting pipe and are connected to a first vacuum pump.

11. The thin-film storage tank according to claim 6, characterized in that, The first heat insulation module includes a second vacuum box, and a first support structure is provided in the second vacuum box; and / or, the second heat insulation module includes a first vacuum box, and a second support structure is provided in the first vacuum box.

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