Heat insulation structure and film storage tank system

Abstract

The invention provides a heat insulation structure and a film storage tank system, and relates to the technical field of storage tank containers. The heat insulation structure comprises a heat insulation module and a shielding film. The shielding film and the heat insulation module are stacked, and a corrugated part protruding in the direction away from the heat insulation module is formed on the shielding film. An energy absorption structure is arranged at the position, where the corrugated part is formed, of the shielding film, the energy absorption structure is located on the side facing the heat insulation module and / or the energy absorption structure is located on the side deviating from the heat insulation module, and the energy absorption structure is used for absorbing part of impact energy when the corrugated part is impacted. In this way, the energy absorption structure can protect the corrugated part, and the possibility that the corrugated part is damaged due to the fact that the corrugated part is impacted is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of storage tank containers, and in particular to a heat insulation structure and a thin film storage tank system. Background Art

[0002] Currently, with the improvement of people's awareness of environmental protection, the use of clean energy has also increased significantly. Among them, natural gas, as a clean energy source, its demand and application are growing rapidly. Generally, natural gas is mainly stored and transported in a liquid form, and it is an effective way to store and transport liquefied natural gas through a thin film storage tank system.

[0003] In the related art, when liquefied natural gas is carried in a thin film storage tank system, the liquefied natural gas is prone to sloshing in the thin film storage tank system, and thus it is easy to damage the thin film storage tank system. Summary of the Invention

[0004] The present application provides a heat insulation structure and a thin film storage tank system, which can reduce the possibility of damage to the thin film storage tank system.

[0005] In a first aspect, the present application provides a heat insulation structure, including a heat insulation module and a shielding film. The shielding film is stacked with the heat insulation module, and a corrugated portion protruding in a direction away from the heat insulation module is formed on the shielding film. An energy absorption structure is provided at a position on the shielding film where the corrugated portion is formed. The energy absorption structure is located on the side facing the heat insulation module, and / or the energy absorption structure is located on the side away from the heat insulation module. The energy absorption structure is used to absorb part of the impact energy when the corrugated portion is impacted.

[0006] The present application is provided with an energy absorption structure at the shielding film. The energy absorption structure can protect the corrugated portion and reduce the possibility of damage to the corrugated portion caused by impact. Thus, the possibility of damage to the heat insulation structure can be reduced, and the reliability of the thin film storage tank system equipped with the heat insulation structure proposed by the present application for storing and transporting liquefied natural gas can be improved.

[0007] Optionally, the energy absorption structure includes a buffer member, and the buffer member is connected to the surface of the shielding film. The buffer member is used to absorb part of the impact energy.

[0008] The buffer member is connected to the surface of the shielding film, and a buffer layer can be formed on the surface of the shielding film, which can reduce the possibility of damage to the corrugated portion caused by liquid sloshing.

[0009] Optionally, at a position on the shielding film where the corrugated portion is formed, and at a position on the shielding film where the corrugated portion is not formed, they are transitioned by an arc structure. In the protruding direction of the corrugated portion, the projection of the buffer member covers the corrugated portion and the arc structure.

[0010] In this way, the buffer member can extend from the corrugated portion to the arc structure. Therefore, in addition to protecting the corrugated portion, the buffer member can also protect the transition portion between the position on the shielding film where the corrugated portion is not formed and the corrugated portion. Thus, when the shielding film is impacted, the buffer member can also reduce the impact energy received by the transition portion, thereby reducing the possibility of damage to the shielding film at the transition portion.

[0011] Optionally, the heat insulation structure includes plywood, which is connected between the shielding film and the heat insulation module. At the corrugated portion, a receiving space is formed between the plane where the plywood is located and the shielding film. The energy absorption structure further includes a reinforcing member, which is installed in the receiving space and is used to provide support for the corrugated portion when the corrugated portion is impacted.

[0012] The reinforcing member can provide support for the corrugated portion. When the corrugated portion is impacted, the reinforcing member can improve the strength and stability of the corrugated portion, and reduce the possibility of deformation and cracking of the corrugated portion after being impacted.

[0013] Optionally, at the corrugated portion, there are opposite first inner wall and second inner wall. The two sides of the reinforcing member are respectively arranged at intervals with the first inner wall and the second inner wall, and one end of the reinforcing member facing the heat insulation module is connected to the plywood.

[0014] Through the above settings, the reinforcing member can be installed in the heat insulation structure through the plywood. Since the two sides of the reinforcing member are respectively arranged at intervals with the first inner wall and the second inner wall, the possibility of the setting of the reinforcing member affecting the normal deformation of the shielding film can be reduced.

[0015] Optionally, the reinforcing member has elasticity. In the extending direction of the corrugated portion, a cavity is provided on the reinforcing member. When the corrugated portion is impacted, the reinforcing member can also absorb part of the impact energy to change the shape of the cavity.

[0016] In this way, the reinforcing member can be in a hollow state. Thus, when the impact is transmitted to the reinforcing member, it is convenient for the reinforcing member to deform and absorb the impact energy. Therefore, the protective effect of the reinforcing member on the shielding film can be better.

[0017] Optionally, reinforcing ribs are connected to the cavity wall of the cavity.

[0018] In this way, the reinforcing ribs can also provide support for the reinforcing member and improve the structural strength of the reinforcing member. When the impact hits the reinforcing member and causes the reinforcing member to deform, the reinforcing ribs can provide a certain support for the reinforcing member, reducing the possibility that the reinforcing member is crushed and loses its protective effect when the next impact occurs.

[0019] Optionally, the material of the energy absorption structure includes any one of polytetrafluoroethylene, silicone rubber, polysulfone, and ethylene propylene rubber.

[0020] Through the above settings, the low-temperature resistance effect of the energy absorption structure can be better, so that the energy absorption structure can provide a good protection effect for the shielding film.

[0021] In a second aspect, the present application provides a thin-film storage tank system, including a storage tank body and the heat insulation structure according to any one of the first aspects above. The storage tank body is used to load the liquid to be stored, the heat insulation structure is installed on the inner wall of the storage tank body, and the heat insulation module is arranged towards the inner wall of the storage tank body.

[0022] Optionally, the storage tank body has a rated loading capacity. When the liquid to be stored with the rated loading capacity is loaded in the storage tank body, the liquid to be stored has a reference liquid level, and the heat insulation structure is located below the reference liquid level.

[0023] For the thin-film storage tank system provided in the second aspect above and each possible design of the second aspect, the beneficial effects can refer to the beneficial effects brought by the first aspect and each possible implementation manner of the first aspect, which will not be elaborated here. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of a heat insulation structure according to an embodiment of the present application.

[0025] Figure 2 It is a schematic diagram of a shielding film according to an embodiment of the present application.

[0026] Figure 3 It is a schematic diagram of the installation of a buffer member according to an embodiment of the present application.

[0027] Figure 4 It is a schematic diagram of the installation of another buffer member according to an embodiment of the present application.

[0028] Figure 5 It is one of the schematic diagrams of a reinforcing member according to an embodiment of the present application.

[0029] Figure 6 It is another schematic diagram of a reinforcing member according to an embodiment of the present application.

[0030] Figure 7 It is a third schematic diagram of a reinforcing member according to an embodiment of the present application.

[0031] Description of the Reference Numerals: 100: Heat insulation structure; 10: Heat insulation module; 20: Shielding film; 21: Corrugated part; 211: First inner wall; 212: Second inner wall; 213: Arc structure; 30: Energy absorption structure; 31: Buffer member; 32: Reinforcing member; 321: Cavity; 322: Reinforcing rib; 40: Plywood; 41: Accommodating space; 323: Support foot. Detailed Embodiments

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without making creative efforts fall within the scope of protection of this application.

[0033] 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 this application in the specification are only for the purpose of describing specific embodiments 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.

[0034] Referring to "embodiments" herein means that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0035] The term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: the existence of A, the simultaneous existence of A and B, and the existence of B. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0036] The orientation terms appearing in the following description are all the directions shown in the figures and do not limit the specific structure of this application. For example, in the description of this application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of this application.

[0037] In addition, the terms "first", "second", etc. in the description and claims of this application 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.

[0038] In the description of this application, unless otherwise specified, the meaning of "a plurality of" refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups).

[0039] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, the "connection" or "coupling" of a mechanical structure may refer to a physical connection. For example, a physical connection may 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 may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a welded connection, an adhesive connection, or an integrally formed connection. 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. The "connection" or "coupling" of a circuit structure may refer to not only a physical connection but also an electrical connection or a signal connection. For example, it may be a direct connection, that is, a physical connection, or it may be indirectly connected through at least one intermediate element, as long as the circuit is connected. It may also be the connection inside two elements; a signal connection may refer to not only a signal connection through a circuit but also a signal connection through a media medium, such as radio waves. 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.

[0040] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, the "in one embodiment" or "in an embodiment" that appears throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in one or more embodiments in any suitable manner.

[0041] Thin-film storage tank systems are widely used in the fields of energy and chemical industry. With the increasing demand for clean energy, natural gas, as a kind of clean energy, its application is also growing rapidly. The storage and transportation of natural gas rely more on liquid cargo storage systems.

[0042] To improve the storage and transportation efficiency of natural gas, natural gas is usually loaded in a liquid cargo storage system in the form of liquefied natural gas (LNG). When liquefied natural gas (LNG) is stored in a thin-film storage tank system, the LNG may slosh in the thin-film storage tank system and impact the shielding film 20.

[0043] Based on the above problems, an embodiment of the present application proposes a thin-film storage tank system. The thin-film storage tank system provided in the embodiment of the present application will be introduced in detail below with reference to the accompanying drawings.

[0044] Exemplarily, an embodiment of the present application proposes a thin-film storage tank system, which includes a storage tank body and an Figure 1 insulation structure 100 as shown. The storage tank body is used to load the liquid to be stored, and the insulation structure 100 is installed on the inner wall of the storage tank body, and the insulation module 10 faces the inner wall of the storage tank body.

[0045] The thin-film storage tank system is one of the enclosing structures used for liquefied natural gas, including a storage tank body and an insulation structure 100, and the insulation structure 100 is arranged on the inner wall of the storage tank body. Among them, the storage tank body can load the liquid to be stored, such as LNG. The insulation structure 100 is located between the LNG and the storage tank body, which can reduce the heat transfer between the LNG and the storage tank body. And the storage tank body can form the outer tank of the thin-film storage tank system, provide structural support for the entire thin-film storage tank system, bear various loads, and reduce the possibility of damage to the inner tank.

[0046] In the present application, the setting of the insulation structure 100 can reduce the possibility that when the liquefied natural gas sloshes in the thin-film storage tank system, the insulation structure 100 is damaged and the LNG leaks at the inner tank, and improve the storage or transportation effect of the thin-film storage tank system on the liquid natural gas.

[0047] It should be noted that the thin-film storage tank system can be divided into a land thin-film storage tank system and an ocean thin-film storage tank system according to the usage scenario. Among them, the land thin-film storage tank system is mainly used for storing liquid natural gas on land, and the ocean thin-film storage tank system is mainly used for storing and transporting liquid natural gas in the ocean environment, such as an LNG ship.

[0048] Specifically, for the land thin-film storage tank system, in the event of natural disasters such as earthquakes, the land thin-film storage tank system will vibrate accordingly, resulting in the sloshing of the LNG. For the ocean thin-film storage tank system, it mostly operates at sea. When there are phenomena such as wind and waves at sea, the ocean thin-film storage tank system will also drive the LNG to slosh in the tank.

[0049] The thin-film storage tank system in this application can be applied in different scenarios, that is, the thin-film storage tank system can be a land thin-film storage tank system or an offshore thin-film storage tank system. In other words, the thermal insulation structure 100 proposed in this application can be applied in a land thin-film storage tank system or an offshore thin-film storage tank system, which can improve the storage or transportation effect of liquefied natural gas.

[0050] In addition, the thin-film storage tank system proposed in the embodiments of this application can also be applied to the storage and transportation of other liquids. That is, the liquid to be stored is not limited to LNG, and can also be other liquids, such as liquefied petroleum gas, liquid hydrogen, etc. In this regard, the embodiments of this application do not make specific limitations here, and can be determined according to actual use and design. In the following description, the liquid to be stored is specifically taken as LNG as an example for illustration.

[0051] In some embodiments, the storage tank body has a rated loading capacity. When the storage tank body is loaded with the rated loading capacity of the liquid to be stored, the liquid to be stored has a reference liquid level, and the thermal insulation structure 100 is located below the reference liquid level.

[0052] When LNG is loaded inside the storage tank body, if LNG sloshes inside the storage tank body, the hydrodynamic pressure on the part of the structure below the liquid level of LNG is relatively large, and due to the accumulation of liquid inertia force and the action of periodic fatigue load, the impact on the structure below the liquid level is relatively large.

[0053] In this application, the thermal insulation structure 100 is arranged below the reference liquid level. Therefore, when LNG is loaded inside the storage tank body and LNG sloshes, the part of the thin-film storage tank system that is impacted is the thermal insulation structure 100. And the thermal insulation structure 100 proposed in this application has a relatively large strength and can withstand a relatively large impact. Therefore, the possibility of damage to the thin-film storage tank system caused by LNG sloshing is relatively small, and the service life of the thin-film storage tank system can be improved.

[0054] In addition, the thermal insulation structure 100 in this application is arranged below the reference plane, which can reduce the possibility of damage to the thin-film storage tank system while greatly reducing the use of the thermal insulation structure 100 and lowering the cost of the thin-film storage tank system.

[0055] In addition, heat insulation treatment is also required above the reference liquid level to reduce the possibility that the heat outside the storage tank body directly enters the inside of the storage tank body through the storage tank body, making LNG prone to evaporation. Above the reference liquid level, a heat insulation module can be arranged on the inner wall of the storage tank body. The heat insulation module can specifically include heat insulation materials and stainless steel plates arranged in a stacked manner. The specific structure of the heat insulation module can refer to the structure in the prior art. In other words, this application can improve the heat insulation module below the reference liquid level and replace the heat insulation module below the reference liquid level with the thermal insulation structure 100 to reduce the possibility of damage to the thin-film storage tank system.

[0056] Of course, instead of setting up a heat insulation module above the reference liquid level, it can also be set as a heat insulation structure 100. In this way, the ability of the thin-film storage tank system to withstand the impact of LNG can be improved, thereby improving the service life and reliability of the thin-film storage tank system.

[0057] The heat insulation structure 100 provided by the embodiment of the application will be introduced in detail below in conjunction with the attached drawings.

[0058] Referring to Figure 1 、 Figure 2 and Figure 3 As shown, the present application provides a heat insulation structure 100, including a heat insulation module 10 and a shielding film 20. The shielding film 20 and the heat insulation module 10 are stacked, and a corrugated portion 21 protruding in a direction away from the heat insulation module 10 is formed on the shielding film 20. An energy absorption structure 30 is provided at a position where the corrugated portion 21 is formed on the shielding film 20. The energy absorption structure 30 is located on a side facing the heat insulation module 10, and / or the energy absorption structure 30 is located on a side away from the heat insulation module 10. The energy absorption structure 30 is used to absorb part of the impact energy when the corrugated portion 21 is impacted.

[0059] In the embodiment of the present application, the heat insulation structure 100 includes a heat insulation module 10 and a shielding film 20. In the heat insulation structure 100, the heat insulation module 10 and the shielding film 20 are stacked. Among them, the heat insulation module 10 is made of a material with good cold insulation effect, which can reduce heat transfer and maintain the stability of the internal temperature of the thin-film storage tank system. The shielding film 20 can provide structural support for the heat insulation module 10 and cooperate with the heat insulation module 10 to form a heat insulation barrier, reducing the evaporation rate and energy loss of liquefied natural gas.

[0060] Among them, a corrugated portion 21 is formed on the shielding film 20. Since the corrugated portion 21 is protruded, the shielding film 20 can be adapted to the use environment of the thin-film storage tank system. When the thin-film storage tank system contains liquid natural gas, the inside of the thin-film storage tank system is in a low-temperature state, with a large difference from the normal temperature. The setting of the corrugated portion 21 can adapt to the deformation of the shielding film 20 caused by the temperature difference and provide a space for the shielding film 20 to deform.

[0061] In the present application, the shielding film 20 is provided with an energy absorption structure 30. The energy absorption structure 30 is arranged at the corrugated portion 21. When the corrugated portion 21 is impacted, the energy absorption structure 30 can absorb the impact energy generated by the impact. In this way, the impact on the shielding film 20 can be reduced, the structural stability of the shielding film 20 can be improved, and the service life of the heat insulation structure 100 can be improved.

[0062] Among them, the energy absorption structure 30 can be specifically arranged on a side of the shielding film 20 facing the heat insulation module 10, such asFigure 1 , Figure 4 and Figure 5 as shown. At this time, when the shielding film 20 is impacted, at the corrugated portion 21, the energy absorption structure 30 can receive the impact and slow down the transmission of this impact, thereby reducing the instantaneous impact force received by the corrugated portion 21. Moreover, the energy absorption structure 30 can also disperse the impact to reduce the concentration of the impact at the corrugated portion 21, making it less likely that the corrugated portion 21 is easily damaged.

[0063] And / or, the energy absorption structure 30 can also be arranged on one side of the shielding film 20 of the magnification insulation module 10, such as Figure 1 and Figure 3 as shown. At this time, when the shielding film 20 is impacted, at the corrugated portion 21, the impact can first act on the energy absorption structure 30. The energy absorption structure 30 can absorb and disperse part of the impact energy, reducing the impact energy transmitted to the shielding film 20. In this way, the possibility of damage to the corrugated portion 21 can also be reduced.

[0064] In summary, in the present application, the energy absorption structure 30 is provided at the shielding film 20. The energy absorption structure 30 can protect the corrugated portion 21 and reduce the possibility that the corrugated portion 21 is damaged due to the impact received by the corrugated portion 21. Thus, the possibility of damage to the insulation structure 100 can be reduced, and the reliability of the thin-film storage tank system equipped with the insulation structure 100 proposed in the present application for storing and transporting liquefied natural gas can be improved.

[0065] Here, in order to make the solution and beneficial effects of the present application clearer, the present application will be described in detail in combination with the related art.

[0066] In the related art, when LNG sloshes, the LNG will impact the inner wall (shielding film) of the thin-film storage tank system. For the shielding film, due to the change in its geometric shape at the corrugated portion, stress concentration is more likely to occur at the corrugated portion. And when an impact occurs, the protruding corrugated portion is directly impacted by the liquid. Therefore, the shielding film is more likely to be damaged at the corrugated portion, easily leading to the failure of the insulation structure.

[0067] In the present application, however, the energy absorption structure 30 is provided at the corrugated portion 21 of the shielding film 20. The energy absorption structure 30 can reduce the impact received by the corrugated portion 21 and play a protective role for the corrugated portion 21. Compared with the related art, the present application can greatly reduce the possibility that the insulation structure 100 is damaged due to the impact on the shielding film 20.

[0068] In some embodiments, such as Figure 3 and Figure 4As shown, the energy absorption structure 30 may include a buffer member 31, which is connected to the surface of the shielding film 20, and can reduce the possibility of damage to the corrugated portion 21 caused by liquid sloshing.

[0069] It should be noted that during the use of the thin-film storage tank system, the temperature inside the thin-film storage tank system is relatively low. Therefore, when setting the buffer member 31, it is necessary to ensure that the buffer member 31 can still absorb and disperse the impact energy in a low-temperature environment. Especially for LNG, its boiling point is extremely low. In addition, when the buffer member 31 is arranged on the shielding film 20, it is also necessary to avoid the occurrence of electrochemical corrosion problems among LNG, the shielding film 20, and the buffer member 31.

[0070] Based on this, the buffer member 31 can specifically be made of a material with good low-temperature resistance, good elasticity, and a relatively low potential, so that the buffer member 31 can fully play its role in absorbing impact energy and reduce the impact on the performance of LNG and other aspects.

[0071] Specifically, the material of the buffer member 31 can be any one of polytetrafluoroethylene (PTFE), silicone rubber, polysulfone (PSF), and ethylene propylene rubber (EPR).

[0072] Polytetrafluoroethylene, silicone rubber, polysulfone, and ethylene propylene rubber have good low-temperature resistance effects and can meet the use requirements in a low-temperature environment. They can provide good protection for the shielding film 20 during the use of the thin-film storage tank system. For the specific material used for the buffer member 31, the embodiments of the present application do not make specific limitations here, and it can be selected according to the actual situation.

[0073] It should also be noted that when setting the buffer member 31 on the shielding film 20, the buffer member 31 can be specifically connected to the corrugated portion 21 of the shielding film 20 through a low-temperature adhesive, or it can also be connected through methods such as hot pressing and compounding, vulcanization connection, etc. For the specific connection method between the shielding film 20 and the buffer member 31, it can be specifically selected and designed according to the specific material of the shielding film 20, the specific material of the buffer member 31, etc. The embodiments of the present application do not make specific limitations on this.

[0074] In some embodiments, as Figures 2 to 4 shown, at the position where the corrugated portion 21 is formed on the shielding film 20, and at the position where the corrugated portion 21 is not formed on the shielding film 20, an arc structure 213 can be used for transition. In this way, in the shielding film 20, the transition at the bottom of the corrugated portion 21 can be relatively smooth, reducing the possibility of local stress concentration caused by right-angle or sharp-angle transitions, and also reducing the possibility of damage to the shielding film 20 due to impact.

[0075] In the present application, in the protruding direction of the corrugated portion 21, the projection of the buffer member 31 covers the corrugated portion 21 and the arc structure 213. In this way, the buffer member 31 can extend from the corrugated portion 21 to the arc structure 213. Therefore, in addition to protecting the corrugated portion 21, the buffer member 31 can also protect the transition portion between the position on the shielding film 20 where the corrugated portion 21 is not formed and the corrugated portion 21. Thus, when the shielding film 20 is impacted, the buffer member 31 can also reduce the impact energy received by the transition portion, thereby reducing the possibility of damage to the shielding film 20 at the transition portion.

[0076] Of course, the buffer member 31 can also be arranged in other ways. For example, the projection of the buffer member 31 can only cover the corrugated portion 21, or cover a part of the corrugated portion 21. The specific arrangement of the buffer member 31 is not specifically limited in the embodiments of the present application.

[0077] In some embodiments, as Figure 1 、 Figure 5 shown, the heat insulation structure 100 may include a plywood board 40, and the plywood board 40 is connected between the shielding film 20 and the heat insulation module 10. At the corrugated portion 21, a receiving space 41 is formed between the plane where the plywood board 40 is located and the shielding film 20. The energy absorption structure 30 further includes a reinforcing member 32, and the reinforcing member 32 is installed in the receiving space 41. The reinforcing member 32 is used to provide support for the corrugated portion 21 when the corrugated portion 21 is impacted.

[0078] In the present application, a plywood board 40 is provided between the shielding film 20 and the heat insulation module 10. The plywood board 40 can be used as a support structure in the heat insulation structure 100, and the arrangement of the plywood board 40 is easy to form an efficient load transfer path between the shielding film 20, the heat insulation module 10, and the storage tank body, and can also cooperate with the shielding film 20 and the heat insulation module 10 to increase the heat insulation performance of the thin film storage tank system.

[0079] In the embodiments of the present application, in addition to the buffer member 31, the energy absorption structure 30 may further include a reinforcing member 32. The reinforcing member 32 can provide support for the corrugated portion 21. When the corrugated portion 21 is impacted, the reinforcing member 32 can improve the strength and stability of the corrugated portion 21, and can reduce the possibility of deformation and cracking of the corrugated portion 21 after being impacted.

[0080] Since the corrugated portion 21 protrudes from the shielding film 20, the corrugated portion 21 is not connected to the plywood 40. In this way, an accommodation space 41 can be formed between the planes where the shielding film 20 and the plywood 40 are located at the corrugated portion 21. The reinforcement 32 can be installed in the accommodation space 41. In this way, when the corrugated portion 21 is impacted, the reinforcement 32 can provide support for the corrugated portion 21 in the accommodation cavity 321, bear part of the impact, and absorb part of the impact energy. In addition, the reinforcement 32 is also conducive to dispersing the impact on the corrugated portion 21 to other parts, so that the force on the shielding film 20 is more uniform, and the possibility of damage to the shielding film 20 can also be reduced.

[0081] refer to Figures 5 to 7 , respectively show three different structures of the reinforcement member 32. It can be understood that the specific structure of the reinforcement member 32 is not limited to the structure shown in the figure, and can also be other structures that can play a reinforcing role.

[0082] In the embodiment of the present application, both the buffer 31 and the reinforcement 32 can absorb the impact energy at the corrugated portion 21, which can reduce the possibility of damage to the shielding film 20. Those skilled in the art can set the buffer 31 or the reinforcement 32 at the corrugated portion 21 according to actual needs, or set the buffer 31 and the reinforcement 32.

[0083] In combination with the above description, in the present application, the energy absorbing structure 30 may be located on the side facing the insulation module 10, and / or the energy absorbing structure 30 may be located on the side facing away from the insulation module 10. When the energy absorbing structure 30 is located on the side facing away from the insulation module 10, specifically, the buffer member 31 may be arranged on the side of the corrugated portion 21 facing away from the insulation module 10. When the energy absorbing structure 30 is located on the side facing the insulation module 10, specifically, the buffer member 31 may be arranged on the side of the corrugated portion 21 facing the insulation module 10, and / or, the reinforcement member 32 may be arranged in the accommodating space 41.

[0084] In some embodiments, the corrugated portion 21 has a first inner wall 211 and a second inner wall 212 opposite to each other, and a gap is formed between the first inner wall 211 and the second inner wall 212 and the reinforcement 32 . The reinforcement 32 is connected to the plywood 40 at one end facing the insulation module 10 .

[0085] The corrugated portion 21 is convex, and has a first inner wall 211 and a second inner wall 212 opposite to each other on the side facing the insulation module 10. When the reinforcing member 32 is provided, the reinforcing member 32 may be provided between the first inner wall 211 and the second inner wall 212.

[0086] In the embodiment of the present application, there are gaps between both the first inner wall 211 and the second inner wall 212 and the reinforcing member 32, which can enable the two sides of the reinforcing member 32 to be spaced apart from the first inner wall 211 and the second inner wall 212 respectively. In this way, the influence of the arrangement of the reinforcing member 32 on the deformation of the shielding film 20 can be reduced, so that the shielding film 20 can adapt to the deformation caused by temperature.

[0087] For the specific connection of the reinforcing member 32, it can be carried out through the plywood 40. After the reinforcing member 32 is connected to the plywood 40, the fixing of the reinforcing member 32 can be completed, so that the reinforcing member 32 can protect the corrugated portion 21.

[0088] When the shielding film 20 is impacted and the corrugated portion 21 deforms toward the side of the reinforcing member 32, the corrugated portion 21 can come into contact with the reinforcing member 32, and then the reinforcing member 32 can support the corrugated portion 21. In this way, the corrugated portion 21 can provide a force opposite to the impact, reducing the possibility of damage to the corrugated portion 21 due to excessive deformation of the corrugated portion 21.

[0089] Among them, the size of the gap between the reinforcing member 32 and the first inner wall 211 can be the first distance L 1 . L 1 can satisfy: 0 ≤ L 1 ≤ 0.5 mm. When the gap between the reinforcing member 32 and the first inner wall 211 is within this range, the influence of the reinforcing member 32 on the deformation of the shielding film 20 can be reduced to a large extent, and the problem that the distance between the reinforcing member 32 and the first inner wall 211 is too large, resulting in a poor supporting effect of the reinforcing member 32 on the corrugated portion 21, can be avoided.

[0090] In the present application, L 1 can specifically be 0.5 mm, 0.45 mm, 0.423 mm, 0.39 mm or 0.26 mm, etc. For the specific value of L 1 , the embodiments of the present application do not make specific limitations here.

[0091] Similarly, the size of the gap between the reinforcing member 32 and the second inner wall 212 can be the first distance L 2 . L 2 can also satisfy: 0 ≤ L 2 ≤ 0.5 mm. For the specific description of the gap between the reinforcing member 32 and the second inner wall 212, reference can be made to the foregoing description of the gap between the reinforcing member 32 and the first inner wall 211, and the embodiments of the present application will not repeat it here.

[0092] In addition, in some setting methods, the plywood 40 is only arranged at the position where the shielding film 20 does not form the corrugated portion 21, that is, the plywood 40 is only arranged at the planar position of the shielding film 20, and the plywood 40 is not arranged at the position opposite to the corrugated portion 21. At this time, support feet 323 can be arranged on the side of the reinforcing member 32 facing the heat insulation module 10, and the support feet 323 can be connected to the plywood 40 corresponding to the part of the shielding film 20 where the corrugated portion 21 is not formed, as Figure 6 shown.

[0093] It should be noted that when the buffer member 31 is arranged on the side of the corrugated portion 21 facing the heat insulation module 10, the reinforcing member 32 can abut against the part of the buffer member 31 corresponding to the first inner wall 211 and the part of the buffer member 31 corresponding to the second inner wall 212.

[0094] For the convenience of description, the position where the corrugated portion 21 protrudes the most (the position where the distance from the heat insulation module 10 is the largest) is called the top of the corrugated portion 21, and the side of the corrugated portion 21 close to the shielding film 20 is called the root of the corrugated portion 21. The top of the corrugated portion 21 is generally designed as a rounded corner to reduce stress concentration and improve the structural stability of the shielding film 20.

[0095] Compared with the top of the corrugated portion 21, at the root of the corrugated portion 21, the discontinuity of the shielding film 20 is more significant and the local stress concentration is larger. Moreover, at the root of the corrugated portion 21 is the key support point of the shielding film 20, which also bears a large shear stress. Therefore, the root of the corrugated portion 21 is more likely to be damaged under the action of impact.

[0096] As a preferred method, the reinforcing member 32 can be arranged on the side of the corrugated portion 21 close to the root to reduce the possibility of damage to the root of the corrugated portion 21 and improve the overall service life of the shielding film 20.

[0097] In some embodiments, the reinforcing member 32 can be elastic. In the extending direction of the corrugated portion 21, a cavity 321 can be arranged on the reinforcing member 32. When the corrugated portion 21 is impacted, the reinforcing member 32 can also absorb part of the impact energy to change the shape of the cavity 321. Specifically, reference can be made to Figure 7 .

[0098] In the present application, the cavity 321 is arranged on the reinforcing member 32, which can make the reinforcing member 32 in a hollow state. In this way, when the impact is transmitted to the reinforcing member 32, it is convenient for the reinforcing member 32 to deform and absorb the impact energy. Thus, the protective effect of the reinforcing member 32 on the shielding film 20 can be better.

[0099] In addition, the provision of the cavity 321 can also reduce the possibility of the reinforcing member 32 sealing the accommodation space 41. In this way, when the membrane storage tank system is subsequently tested, the possibility of the problem that the introduced helium or ammonia cannot pass through part of the accommodation space 41, or the helium or ammonia in the accommodation space 41 at certain positions is insufficient, resulting in insufficient detection accuracy of the membrane storage tank system, can be reduced. That is, the provision of the reinforcing member 32 in the present application can also facilitate the improvement of the detection accuracy of the membrane storage tank system.

[0100] In some embodiments, a reinforcing rib 322 may be connected to the wall of the cavity 321, such as Figure 7 shown.

[0101] In this way, the reinforcing rib 322 can also provide support for the reinforcing member 32, thereby improving the structural strength of the reinforcing member 32. When the impact is transmitted to the reinforcing member 32, causing the reinforcing member 32 to deform, the reinforcing rib 32 can provide certain support for the reinforcing member 32, thereby reducing the possibility that the reinforcing member 32 is crushed and loses its protective effect when the next impact occurs.

[0102] It should be noted that there may be multiple protrusions on a shielding film 20, and the multiple protrusions may form a corrugated portion 21. In the embodiment of the present application, reinforcement members 32 may be provided at the multiple protrusions, so that the multiple protrusions may be protected.

[0103] It should also be noted that, on a shielding film 20, a protrusion extends along a certain direction and has a certain length. In order to make the reinforcing member 32 have a better protective effect on the shielding film 20, the reinforcing member 32 can have different structures.

[0104] For example, at a raised portion, the reinforcing member 32 may also extend along the extending direction of the raised portion. In this way, at each position of the raised portion, the reinforcing member 32 can absorb the impact energy, and the overall protection effect of the shielding film 20 is better.

[0105] Alternatively, a plurality of spaced-apart reinforcing members 32 may be provided at a raised portion, and the plurality of reinforcing members 32 cooperate to absorb impacts at various locations of the shielding film 20 , and the reinforcing members 32 may also provide better protection for the shielding film 20 .

[0106] Similarly, the buffer member 31 may also have a similar structure. That is, at one protrusion, the buffer member 31 may extend from one end of the protrusion to the other end, or at one protrusion, the buffer member 31 may be arranged at intervals.

[0107] In some embodiments, the material of the reinforcement member 32 may also include any one of polytetrafluoroethylene, silicone rubber, polysulfone, and ethylene propylene rubber.

[0108] Polytetrafluoroethylene, silicone rubber, polysulfone, and ethylene-propylene rubber have good low-temperature resistance and can meet the use requirements in low-temperature environments. During the use of the thin-film storage tank system, they can provide good protection for the shielding film 20. Regarding the specific materials used for the reinforcement member 32, the embodiments of the present application do not make specific limitations here, and can be selected according to actual situations.

[0109] Therefore, in the present application, an energy-absorbing structure 30 is provided at the shielding film 20. The energy-absorbing structure 30 can protect the corrugated portion 21 and reduce the possibility of damage to the corrugated portion 21 caused by impact. Thus, the possibility of damage to the heat-insulating structure 100 can be reduced, and the reliability of the thin-film storage tank system equipped with the heat-insulating structure 100 proposed in the present application for storing and transporting liquefied natural gas can be improved.

[0110] Finally, it should be noted that the above embodiments are only specific implementation manners 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 within 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 thermal insulation structure, characterized in that: include: Insulation module; A shielding film is stacked with the thermal insulation module, and a corrugated portion is formed on the shielding film and protrudes in a direction away from the thermal insulation module; An energy absorbing structure is provided at a position where the corrugated portion is formed on the shielding film, the energy absorbing structure is located on a side facing the insulation module, and / or the energy absorbing structure is located on a side away from the insulation module, and the energy absorbing structure is used to absorb part of the impact energy when the corrugated portion is impacted; Wherein, the thermal insulation structure comprises a plywood, the plywood is connected between the shielding film and the thermal insulation module, and an accommodation space is formed between the plane where the plywood is located and the shielding film at the corrugated portion; The energy absorbing structure further comprises a reinforcement member, which is installed in the accommodating space and is located at one side close to the root of the corrugated portion. The reinforcement member is used to provide support to the corrugated portion when the corrugated portion is impacted.

2. The thermal insulation structure according to claim 1, characterized in that: The energy absorbing structure comprises a buffer component, which is connected to the surface of the shielding film and is used to absorb part of the impact energy.

3. The thermal insulation structure according to claim 2, characterized in that: The position where the corrugated portion is formed on the shielding film and the position where the corrugated portion is not formed on the shielding film are transitioned through an arc structure; In the protruding direction of the corrugated portion, the projection of the buffer member covers the corrugated portion and the arc structure.

4. The thermal insulation structure according to claim 1, characterized in that: The corrugated portion has a first inner wall and a second inner wall opposite to each other, a gap is formed between the first inner wall and the second inner wall and the reinforcing member, and one end of the reinforcing member facing the insulation module is connected to the plywood.

5. The thermal insulation structure according to claim 1, characterized in that: The reinforcing member is elastic, and a cavity is provided on the reinforcing member in the extending direction of the corrugated portion. When the corrugated portion is impacted, the reinforcing member can also absorb part of the impact energy to change the shape of the cavity.

6. The thermal insulation structure according to claim 5, characterized in that: The cavity wall of the cavity is connected with reinforcing ribs.

7. The thermal insulation structure according to claim 1, characterized in that: The material of the energy absorbing structure includes any one of polytetrafluoroethylene, silicone rubber, polysulfone, and ethylene propylene rubber.

8. A membrane storage tank system, characterized in that: The membrane tank system comprises a tank body and an insulation structure as described in any one of claims 1 to 7, wherein the tank body is used to load the liquid to be stored, the insulation structure is installed on the inner wall of the tank body, and the insulation module is arranged toward the inner wall of the tank body.

9. The membrane storage tank system according to claim 8, characterized in that: The storage tank body has a rated loading capacity; When a rated amount of liquid to be stored is loaded in the storage tank body, the liquid to be stored has a reference liquid level, and the thermal insulation structure is located below the reference liquid level.

Images