A thermal corner protection structure and a thin-film enclosure system

Abstract

The present application relates to a thermal corner protection structure and a film enclosure system, and relates to the technical field of film enclosure systems. It includes an insulation module, a main corrugated plate and an embedded part. The insulation module is arranged on the inner wall of the outer tank body, and the insulation module includes an upper insulation module and a lower insulation module, and a gap is formed between the two. The main corrugated plate is arranged on the side of the insulation module away from the inner wall of the outer tank body, and the main corrugated plate covers the upper insulation module and the lower insulation module at the same time. The embedded part is fixed to the inner wall of the outer tank body. The secondary corrugated plate is arranged between the lower insulation module and the main corrugated plate. The skirt plate is connected between the embedded part and the secondary corrugated plate, and is partially arranged on the side of the gap close to the upper insulation module. Among them, the embedded part, the skirt plate and the secondary corrugated plate are connected in sequence and enclose a sealed cavity, and the gap and the main corrugated plate are separated on both sides of the sealed cavity. The thermal corner protection structure can solve the problem that the boundary position of the film enclosure system in the prior art is prone to leakage.

Description

Technical Field

[0001] The present application relates to the technical field of film enclosure systems, and in particular, to a thermal corner protection structure and a film enclosure system. Background Art

[0002] During the transportation and storage of liquefied natural gas, professional liquefied natural gas storage tanks are required for storage. During this process, the liquefied natural gas storage tanks need to be equipped with professional enclosure structures to ensure a closed low-temperature environment inside the tank.

[0003] In the prior art, the enclosure structure of liquefied natural gas storage tanks is usually set as a film enclosure system, using a structure such as a stainless steel corrugated plate as a shielding layer to achieve closed enclosure. However, when the above-mentioned film enclosure system is used, there is a dividing line at a position five meters from the side wall of the enclosure system to the bottom of the tank. Among them, a single-layer shielding structure can be set in the area above five meters, while a double-layer shielding structure is required in the area below five meters.

[0004] When the film enclosure system is used, at the 5-meter dividing line, due to the different structures of the enclosure system, the enclosure system needs to be assembled separately, resulting in a relatively obvious gap structure at the dividing line. Not only is it easy to form a cold bridge structure with poor insulation performance at this location, but also it is easy to form a leakage channel at this location when the main shielding layer leaks, causing the low-temperature materials stored in the tank to damage the outer layer of the tank, thereby causing safety problems such as tank leakage. Summary of the invention

[0005] The purpose of the present application is to provide a thermal corner protection structure and a thin film enclosure system, wherein the thermal corner protection structure can solve the safety problem caused by leakage at the boundary line of the thin film enclosure system in the prior art.

[0006] In order to achieve the above-mentioned purpose, the first aspect of the present application provides a thermal corner protection structure, which is arranged in the accommodating cavity formed by the outer tank body. The thermal corner protection structure includes an insulation module, a main corrugated plate and an embedded part. The insulation module is arranged on the inner wall of the outer tank body, and the insulation module includes an upper insulation module and a lower insulation module, and a gap is formed between the two. The main corrugated plate is arranged on the side of the insulation module away from the inner wall of the outer tank body, and the main corrugated plate covers the upper insulation module and the lower insulation module at the same time. The embedded part is fixed to the inner wall of the outer tank body, and is partially arranged on the side of the gap close to the upper insulation module. The secondary corrugated plate is arranged between the lower insulation module and the main corrugated plate. The skirt plate is connected between the embedded part and the secondary corrugated plate, and is partially arranged on the side of the gap close to the upper insulation module. Among them, the embedded part, the skirt plate and the secondary corrugated plate are connected in sequence and enclose a sealed cavity, and the gap and the main corrugated plate are separated on both sides of the sealed cavity.

[0007] Based on the above-mentioned embodiments of the present application, during the construction and assembly of the liquefied natural gas storage tank, according to the different pressure and temperature environments, a gap is formed at a position five meters away from the bottom of the tank, and the upper insulation module and the lower insulation module on the upper and lower sides of the gap are set with different structures, and are assembled separately in the specific assembly process. Specifically, the area above the gap is formed by the main corrugated plate to form a single-layer shielding structure, and the area below the gap is formed by the main corrugated plate and the secondary corrugated plate to form a double-layer shielding structure, so as to strengthen the enclosure of the lower area of ​​the outer tank body in a targeted manner. In this process, the embedded parts, skirt plates and secondary corrugated plates are connected in sequence to enclose a sealed cavity, and the gap and the main corrugated plate are separated on both sides of the sealed cavity. At this time, even if a leak occurs on the main corrugated plate, the enclosure structure composed of the embedded parts, skirt plates and secondary corrugated plates can also prevent the low-temperature material from flowing into the sealed cavity, thereby preventing the low-temperature material from flowing directly to the outer tank body through the gap, thereby reducing the possibility of the low-temperature material causing damage to the outer tank body when the main corrugated plate leaks to a certain extent. In summary, through the above-mentioned settings, while achieving targeted reinforcement of the bottom of the outer tank body, a retaining structure is formed between the gap and the main corrugated plate to prevent low-temperature materials from flowing directly to the outer tank body through the gap when the main corrugated plate leaks, thereby reducing the possibility of leakage of the liquefied natural gas storage tank and improving safety during use.

[0008] In some embodiments, the skirt board end portion is at least partially staggered with the embedded component, and the skirt board end portion is welded and fixed to the embedded component. The skirt board end portion is at least partially staggered with the secondary corrugated plate, and the skirt board end portion is welded and fixed to the secondary corrugated plate.

[0009] Based on the above-mentioned embodiments of the present application, the skirt plate and the embedded parts are connected by welding. On the one hand, sufficient connection strength is guaranteed, making the connection between the two more stable. On the other hand, compared with other connection methods, welding has better sealing performance, which can ensure the overall sealing performance of the sealing cavity and avoid leakage at the connection position between the two. At the same time, by arranging the skirt plate end and the embedded parts to be staggered, the contact area between the two is increased, so that the sealing effect of the connection position between the two can be further enhanced during welding. Similarly, the connection position between the skirt plate and the secondary corrugated plate is fixed by welding, which ensures the connection strength and improves the sealing effect. By arranging the skirt plate end and the secondary corrugated plate to be staggered, the sealing performance of the connection position between the two is further strengthened.

[0010] In some embodiments, the skirt plate is disposed on a side of the secondary corrugated plate close to the sealing cavity, and the skirt plate is disposed on a side of the embedded part away from the sealing cavity.

[0011] Based on the above embodiments of the present application, during the assembly of the hot corner protection structure, the embedded part needs to be pre-buried inside the outer tank during the casting process of the outer tank, so the embedded part has been pre-fixed. At this time, by arranging the skirt plate on the side of the embedded part facing away from the sealing cavity, that is, the skirt plate is connected to the upper surface of the embedded part, the skirt plate can be supported during the assembly and welding fixation processes, facilitating the assembly. At the same time, after the end of the skirt plate is welded to the surface of the embedded part, the staggered position of the two can stably support the skirt plate, thereby improving the stability of the connection structure between the two. By arranging the skirt plate on the side of the secondary corrugated plate close to the sealing cavity, that is, the skirt plate is closer to the inner wall of the outer tank than the secondary corrugated plate, it is convenient to assemble in sequence during assembly.

[0012] In some embodiments, the embedded part includes an embedded plate and a connecting plate. The embedded plate is fixed to the inner wall of the outer tank, one end of the connecting plate is connected to the embedded plate, and the other end is welded and fixed to the skirt plate.

[0013] Based on the above embodiments of the present application, a specific structure of the embedded part is provided. Among them, the embedded plate is pre-buried in the outer tank, increasing the contact area between the embedded part and the outer tank and ensuring the connection strength between the embedded part and the outer tank. The connecting plate extends into the accommodating cavity and is welded and fixed to the skirt plate. At this time, the overall embedded part is set to have a T-shaped vertical cross-section. In the actual production and processing process, the embedded plate and the connecting plate can be integrally arranged, improving the connection strength while facilitating production and processing.

[0014] In some embodiments, the connecting plate is arranged in the gap along the radial direction of the accommodating cavity, and the connecting plate is arranged along the upper edge of the gap.

[0015] Based on the above embodiments of the present application, when the embedded part is set, the embedded plate is used to be fixed to the inner wall of the outer tank, and the connecting plate is arranged in the gap for connecting with the skirt plate. By arranging the edge of the connecting plate along the upper edge of the gap, when the embedded part cooperates with the skirt plate and the secondary corrugated plate to form a sealing cavity, the gap can be completely included, thereby improving the sealing effect.

[0016] In some embodiments, longitudinal corrugations are arranged on the secondary corrugated plate along the axial direction of the accommodating cavity, and end caps are formed at one end of the longitudinal corrugations close to the skirt plate, and the end caps are welded and fixed to the skirt plate.

[0017] Based on the above embodiments of the present application, by forming longitudinal corrugations on the secondary corrugated plate, a certain deformation margin can be left in the transverse direction to cope with the deformation of the secondary corrugated plate due to temperature changes. By forming end caps at the ends of the longitudinal corrugations, one end of the longitudinal corrugations close to the skirt plate can be closed, further improving the sealing effect at the connection position between the secondary corrugated plate and the skirt plate.

[0018] In some embodiments, the upper insulation module includes an upper insulation layer disposed between the primary corrugated plate and the inner wall of the outer tank body. The lower insulation module also includes a lower insulation layer disposed between the secondary corrugated plate and the inner wall of the outer tank body.

[0019] Based on the above-mentioned embodiments of the present application, the upper insulation layer disposed between the main corrugated plate and the outer tank body can, on the one hand, strengthen the insulation effect between the main corrugated plate and the outer tank body, reduce the heat conduction efficiency between the two, and ensure the low temperature environment inside the liquefied natural gas storage tank. On the other hand, it can also be used as a filler to be filled between the main corrugated plate and the outer tank body, which can not only provide a certain support effect for the main corrugated plate, but also improve the overall sealing effect of the upper insulation module to a certain extent. Similarly, the lower insulation layer is disposed between the secondary corrugated plate and the inner wall of the outer tank body to strengthen the insulation effect and ensure the low temperature environment at the bottom of the liquefied natural gas storage tank. At the same time, it provides a certain support effect for the secondary corrugated plate and strengthens the sealing effect.

[0020] In some embodiments, a first plywood is disposed on both sides of the upper insulation layer facing toward and away from the outer tank body, and the upper insulation layer is fixed to the first plywood to form an upper insulation module. A second plywood is disposed on both sides of the lower insulation layer facing toward and away from the outer tank body, and the lower insulation layer is fixedly connected to the second plywood to form a lower insulation module. A third plywood is disposed between the secondary corrugated board and the primary corrugated board, and the secondary corrugated board, the third plywood and the primary corrugated board are anchored and connected in sequence.

[0021] Based on the above-mentioned embodiments of the present application, the arrangement of the first plywood, the second plywood and the third plywood can enhance the supporting effect of the corresponding connection structure. At the same time, the arrangement of the plywood can facilitate the fixation between the various parts, including the anchoring fixation of the primary corrugated plate and the secondary corrugated plate, and the anchoring fixation between the insulation module and the inner wall of the outer tank, which can provide a force point during fixation and ensure the stability of fixation.

[0022] In some embodiments, an anchoring strip is further provided between the secondary corrugated board and the adjacent second plywood board, the skirt board is fixed to the anchoring strip by welding, and the second plywood board is connected to the anchoring strip by anchoring.

[0023] Based on the above-mentioned embodiments of the present application, during the assembly of the hot corner protection structure, the components are assembled one by one from the side close to the inner wall of the outer tank. At this time, after the secondary insulation layer and the second plywood are assembled, the anchoring strip is fixed to the adjacent second plywood by anchoring or other means, thereby providing a welding foundation for the skirt board. Furthermore, an anchoring foundation is provided when the secondary corrugated board and the primary corrugated board and other structures are assembled.

[0024] According to a second aspect of the present application, a film enclosure system is provided, which includes an outer tank body and the above-mentioned thermal corner protection structure, and the thermal corner protection structure is arranged in a containing cavity formed by the outer tank body.

[0025] Based on the above embodiments of the present application, the film enclosure system provided by the present application includes the above thermal corner protection structure, and thus also has the above beneficial effects. To avoid repetition, they will not be elaborated here.

[0026] Other features and advantages of the present application will be described in detail in the following specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present application, but do not constitute a limitation to the present application. In the drawings:

[0028] Figure 1 is a schematic cross-sectional view of the thermal corner protection structure provided by the embodiment of the present application.

[0029] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0030] Figure 3 is a schematic cross-sectional view of the gap and the lower insulation module in the thermal corner protection structure provided by the embodiment of the present application.

[0031] Figure 4 is Figure 3 an enlarged schematic view of part B in

[0032] Figure 5 is a partial plan view of the thermal corner protection structure provided by the embodiment of the present application.

[0033] 1. Upper insulation module; 11. Upper insulation layer; 12. First plywood; 2. Lower insulation module; 21. Lower insulation layer; 22. Second plywood; 23. Third plywood; 24. Anchor bar; 3. Gap; 31. Resin mortar; 32. Horizontal plywood; 4. Main corrugated plate; 5. Embedded part; 51. Embedded plate; 52. Connecting plate; 6. Secondary corrugated plate; 61. Longitudinal corrugation; 62. Transverse corrugation; 63. End cap; 7. Skirt board; 8. Sealing cavity; 9. Outer tank. SPECIFIC EMBODIMENTS

[0034] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] 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. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Usually, the components of the embodiments of this application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application claimed, but merely represents selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the scope of protection of this application.

[0037] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of this application, it should be noted that unless otherwise stated, the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. This is 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 therefore cannot be construed as a limitation of this application. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. 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] In the prior art, the enclosing structure of a liquefied natural gas (LNG) storage tank is usually set as a thin-film enclosing system, using structures such as stainless steel corrugated plates as shielding layers to achieve closed enclosure. However, when the above thin-film enclosing system is in use, there is a demarcation line at the position five meters above the bottom of the side wall of the enclosing system. Among them, a single-layer shielding structure can be set in the area above five meters, while a double-layer shielding structure needs to be set in the area below five meters.

[0041] When the film enclosure system is used, at the 5-meter dividing line, due to the different structures of the enclosure system, the enclosure system needs to be assembled separately, resulting in a relatively obvious gap structure at the dividing line. Not only is it easy to form a cold bridge structure with poor insulation performance at this location, but also it is easy to form a leakage channel at this location when the main shielding layer leaks, causing the low-temperature materials stored in the tank to damage the outer layer of the tank, thereby causing safety problems such as tank leakage.

[0042] In order to solve the above problems in the prior art, according to the first aspect of the present application, an embodiment of the present application provides a thermal corner protection structure, which is arranged in the accommodation cavity formed by the outer tank body 9. Figures 1 to 4 As shown in , the thermal corner protection structure includes an insulation module, a main corrugated plate 4 and an embedded part 5. The insulation module is arranged on the inner wall of the outer tank body 9, and the insulation module includes an upper insulation module 1 and a lower insulation module 2, and a gap 3 is formed between the two. The main corrugated plate 4 is arranged on the side of the insulation module away from the inner wall of the outer tank body 9, and the main corrugated plate 4 covers the upper insulation module 1 and the lower insulation module 2 at the same time. The embedded part 5 is fixed to the inner wall of the outer tank body 9, and is partially arranged on the side of the gap 3 close to the upper insulation module 1. The secondary corrugated plate 6 is arranged between the lower insulation module 2 and the main corrugated plate 4. The skirt plate 7 is connected between the embedded part 5 and the secondary corrugated plate 6, and is partially arranged on the side of the gap 3 close to the upper insulation module 1. Among them, the embedded part 5, the skirt plate 7 and the secondary corrugated plate 6 are connected in sequence and enclose a sealed cavity 8, and the gap 3 and the main corrugated plate 4 are separated on the inside and outside sides of the sealed cavity 8.

[0043] Based on the above-mentioned embodiments of the present application, during the construction and assembly of the liquefied natural gas storage tank, according to the different pressure and temperature environments, a gap 3 is formed at a position five meters away from the bottom of the tank, and the upper insulation module 1 and the lower insulation module 2 on the upper and lower sides of the gap 3 are set with different structures, and are assembled separately during the specific assembly process. Specifically, the area above the gap 3 is formed with a single-layer shielding structure through the main corrugated plate 4, and the area below the gap 3 is formed with a double-layer shielding structure through the cooperation of the main corrugated plate 4 and the secondary corrugated plate 6, so as to strengthen the enclosure of the lower area of ​​the outer tank body 9 in a targeted manner.

[0044] In this process, the embedded parts 5, skirt plate 7 and secondary corrugated plate 6 are connected in sequence to enclose a sealed cavity 8, and the gap 3 and the main corrugated plate 4 are separated on both sides of the sealed cavity 8. At this time, even if leakage occurs on the main corrugated plate 4, the enclosure structure composed of the embedded parts 5, skirt plate 7 and secondary corrugated plate 6 can prevent the low-temperature material from flowing into the sealed cavity 8, thereby preventing the low-temperature material from flowing directly to the outer tank body 9 through the gap 3, thereby reducing the possibility of the low-temperature material damaging the outer tank body 9 when the main corrugated plate 4 leaks.

[0045] In summary, through the above settings, while achieving targeted strengthening of the bottom of the outer tank 9, a retaining structure is formed between the gap 3 and the main corrugated plate 4, preventing cryogenic materials from flowing directly through the gap 3 to the outer tank 9 when the main corrugated plate 4 leaks, thereby reducing the possibility of leakage of the liquefied natural gas storage tank and improving the safety during use.

[0046] Specifically, when the liquefied natural gas storage tank is in use, the outer tank 9 is usually formed into a cylindrical tank structure by means of concrete pouring, and the bottom and top of the tank also need to be closed. When the main corrugated plate 4 leaks, the liquefied natural gas in the storage tank will leak from the main corrugated plate 4 towards the outer tank 9. In the case where the thermal corner protection structure is not provided, the liquefied natural gas will leak inwards from the main corrugated plate 4, and then leak to the outer tank 9 from the gap 3 position, thereby damaging the concrete-structured outer tank 9 and causing leakage of the liquefied natural gas storage tank.

[0047] However, through the above settings of the present application, when the main corrugated plate 4 leaks, the liquefied natural gas leaks in from the main corrugated plate 4 position, and then will be blocked outside the sealing cavity 8 by the retaining structure composed of the embedded part 5, the skirt plate 7 and the secondary corrugated plate 6, thereby separating the leaked liquefied natural gas from the gap 3, thus reducing the possibility of the liquefied natural gas leaking from the gap 3 position to the outer tank 9 and causing damage to the outer tank 9, and further reducing the possibility of liquefied natural gas leakage.

[0048] In addition, it should also be noted that during the actual production and assembly process, in order to ensure the strength of the gap 3 position and avoid the convection of cold and hot air currents at the gap 3 position, the gap 3 can be filled with materials such as glass wool, which can be specifically selected according to the actual situation, and the present application does not make specific restrictions on this.

[0049] In the present application, any suitable connection method can be selected between the skirt plate 7 and the embedded part 5 and between the skirt plate 7 and the secondary corrugated plate 6.

[0050] Reference Figure 3 and Figure 4 As shown in

[0051] Based on the above-mentioned embodiments of the present application, the skirt plate 7 and the embedded part 5 are connected by welding. On the one hand, sufficient connection strength is guaranteed, making the connection between the two more stable. On the other hand, compared with other connection methods, welding has better sealing performance, which can ensure the overall sealing performance of the sealing cavity 8 and avoid leakage at the connection position between the two. At the same time, by arranging the end of the skirt plate 7 and the embedded part 5 to be partially staggered, the contact area between the two is increased, so that the sealing effect of the connection position between the two can be further enhanced during welding. Similarly, the connection position between the skirt plate 7 and the secondary corrugated plate 6 is fixed by welding, which ensures the connection strength and improves the sealing effect. By arranging the end of the skirt plate 7 and the secondary corrugated plate 6 to be partially staggered, the sealing performance of the connection position between the two is further strengthened.

[0052] Specifically, when the skirt board 7 is welded to the embedded parts 5 and the secondary corrugated plate 6 at both ends, in order to improve the sealing effect and strengthen the connection strength at the connection position, sealants or gaskets can be respectively arranged at the connection positions at both ends of the skirt board 7 to strengthen the sealing effect. For example, at the connection position between the skirt board 7 and the embedded parts 5, sealants are applied or gaskets are arranged between the staggered positions of the two to strengthen the sealing effect. Similarly, sealants or gaskets can be arranged at the staggered positions of the skirt board 7 and the secondary corrugated plate 6 to strengthen the sealing effect.

[0053] Further, refer to Figure 3 and Figure 4 As shown in , in some embodiments of the present application, the skirt plate 7 is arranged on a side of the secondary corrugated plate 6 close to the sealing cavity 8, and the skirt plate 7 is arranged on a side of the embedded part 5 away from the sealing cavity 8.

[0054] Based on the above-mentioned embodiments of the present application, during the assembly of the hot corner protection structure, the embedded parts 5 need to be pre-embedded in the process of pouring the outer tank body 9, so the embedded parts 5 have been pre-fixed. At this time, by setting the skirt plate 7 on the side of the embedded part 5 away from the sealing cavity 8, that is, the skirt plate 7 is connected to the upper surface of the embedded part 5, the skirt plate 7 can be supported during the assembly and welding process, so as to facilitate assembly. At the same time, after the end of the skirt plate 7 is welded to the surface of the embedded part 5, the staggered position of the two can stably support the skirt plate 7, thereby improving the stability of the connection structure between the two. By setting the skirt plate 7 on the side of the secondary corrugated plate 6 close to the sealing cavity 8, that is, the skirt plate 7 is closer to the inner wall of the outer tank body 9 relative to the secondary corrugated plate 6, it is easy to assemble in sequence during assembly.

[0055] In the present application, the embedded part 5 can be set to any suitable structure.

[0056] refer to Figure 3As shown in [reference], in an exemplary embodiment provided by the present application, the embedded part 5 may include an embedded plate 51 and a connecting plate 52. The embedded plate 51 is fixed to the inner wall of the outer tank 9, one end of the connecting plate 52 is connected to the embedded plate 51, and the other end is fixedly welded to the skirt plate 7.

[0057] Based on the above embodiments of the present application, a specific structure of the embedded part 5 is provided. Among them, the embedded plate 51 is pre-buried in the outer tank 9 to increase the contact area between the embedded part 5 and the outer tank 9 and ensure the connection strength between the embedded part 5 and the outer tank 9. The connecting plate 52 extends into the accommodation cavity and is fixedly welded to the skirt plate 7. At this time, the overall structure of the embedded part 5 is set to be a T-shaped structure in the vertical section. In the actual production and processing process, the embedded plate 51 and the connecting plate 52 can be integrally formed, which not only facilitates production and processing but also improves the connection strength.

[0058] Specifically, one end of the embedded part 5 is fixed to the outer tank 9, and the other end is connected to other structures for tensile fixation. During this process, by setting the embedded plate 51, the contact area with the outer tank 9 is increased, thereby reducing the force per unit area on the embedded plate 51. At the same time, at the contact position between the embedded plate 51 and the connecting plate 52, it can be strengthened by setting reinforcing ribs or other methods, which can be specifically selected according to the actual situation, and the present application does not make specific limitations on this.

[0059] Further, referring to Figure 3 As shown in [reference], in some embodiments of the present application, the connecting plate 52 is arranged radially in the gap 3 along the accommodation cavity, and the connecting plate 52 is arranged along the upper edge of the gap 3.

[0060] Based on the above embodiments of the present application, when the embedded part 5 is set, the embedded plate 51 is used to be fixed to the inner wall of the outer tank 9, while the connecting plate 52 is arranged in the gap 3 for connection with the skirt plate 7. By arranging the edge of the connecting plate 52 along the upper edge of the gap 3, when the embedded part 5 cooperates with the skirt plate 7 and the secondary corrugated plate 6 to form the sealing cavity 8, the gap 3 can be completely included, thereby improving the sealing effect.

[0061] Referring to Figures 3 to 5 As shown in [reference], in some embodiments of the present application, longitudinal corrugations 61 are arranged axially along the accommodation cavity on the secondary corrugated plate 6, and end caps 63 are formed at one end of the longitudinal corrugations 61 close to the skirt plate 7. The end caps 63 are fixedly welded to the skirt plate 7.

[0062] Based on the above embodiments of the present application, by forming the longitudinal corrugations 61 on the secondary corrugated plate 6, a certain deformation allowance can be left in the transverse direction to cope with the deformation of the secondary corrugated plate 6 due to temperature changes. By forming the end caps 63 at the ends of the longitudinal corrugations 61, the end of the longitudinal corrugations 61 close to the skirt plate 7 can be closed, thereby further improving the sealing effect at the connection position between the secondary corrugated plate 6 and the skirt plate 7.

[0063] Specifically, in the actual production process, since the inside of the liquefied natural gas storage tank needs to maintain a low-temperature environment, structures such as the main corrugated plate 4 and the secondary corrugated plate 6 will shrink and deform due to the low-temperature environment during use. By forming corrugations on the plate body, a certain amount of deformable allowance can be left for the plate body, thereby avoiding the possibility of the plate body being damaged due to low-temperature deformation to a certain extent.

[0064] In the specific production and processing process, taking the secondary corrugated plate 6 as an example, since the deformation of the plate body is usually relatively uniform in all directions, when setting, transverse corrugations 62 and longitudinal corrugations 61 can be simultaneously provided on the secondary corrugated plate 6 to cope with the different deformation conditions of the secondary corrugated plate 6 in the transverse and longitudinal directions at low temperatures. Similarly, the main corrugated plate 4 can also be provided with corrugations to cope with the problem of plate body shrinkage under low-temperature working conditions.

[0065] Reference Figures 1 to 3 As shown in the reference, in some embodiments of the present application, the upper heat insulation module 1 may further include an upper heat insulation layer 11, and the upper heat insulation layer 11 is disposed between the main corrugated plate 4 and the inner wall of the outer tank 9. The lower heat insulation module 2 may further include a lower heat insulation layer 21, and the lower heat insulation layer 21 is disposed between the secondary corrugated plate 6 and the inner wall of the outer tank 9.

[0066] Based on the above embodiments of the present application, the upper heat insulation layer 11 disposed between the main corrugated plate 4 and the outer tank 9 can, on the one hand, strengthen the heat insulation effect between the main corrugated plate 4 and the outer tank 9, reduce the heat conduction efficiency between the two, and ensure the low-temperature environment inside the liquefied natural gas storage tank. On the other hand, it can also be used as a filler to fill between the main corrugated plate 4 and the outer tank 9, which can play a certain supporting effect on the main corrugated plate 4 and can also improve the overall sealing effect of the upper heat insulation module 1 to a certain extent. Similarly, the lower heat insulation layer 21 disposed between the secondary corrugated plate 6 and the inner wall of the outer tank 9 strengthens the heat insulation effect and ensures the low-temperature environment at the bottom of the liquefied natural gas storage tank. At the same time, it plays a certain supporting effect on the secondary corrugated plate 6 and strengthens the sealing effect.

[0067] Specifically, in specific use, the upper heat insulation layer 11 and the lower heat insulation layer 21 can be made of any suitable material. For example, both the upper heat insulation layer 11 and the lower heat insulation layer 21 are set to be made of polyurethane material, and the good heat insulation effect from the main corrugated plate 4 to the inner wall of the outer tank 9 is achieved by utilizing the characteristics of high density and high strength of polyurethane.

[0068] Reference Figures 1 to 4As shown in , in some embodiments of the present application, the upper insulation layer 11 is provided with a first plywood 12 on both sides facing and away from the outer tank body 9, and the upper insulation layer 11 is fixed to the first plywood 12 to form an upper insulation module 1. The lower insulation layer 21 is provided with a second plywood 22 on both sides facing and away from the outer tank body 9, and the lower insulation layer 21 is fixedly connected to the second plywood 22 to form a lower insulation module 2. A third plywood 23 is provided between the secondary corrugated board 6 and the primary corrugated board 4, and the secondary corrugated board 6, the third plywood 23 and the primary corrugated board 4 are anchored and connected in sequence.

[0069] Based on the above-mentioned embodiment of the present application, the arrangement of the first plywood 12, the second plywood 22 and the third plywood 23 can enhance the supporting effect of the corresponding connection structure. At the same time, the arrangement of the plywood can facilitate the fixation between the various parts, including the anchoring fixation of the primary corrugated board 4 and the secondary corrugated board 6, and the anchoring fixation between the insulation module and the inner wall of the outer tank body 9, which can provide a force point during fixation and ensure the stability of fixation.

[0070] Furthermore, in some embodiments of the present application, an anchoring strip 24 is provided between the secondary corrugated board 6 and the adjacent second plywood board 22 , the skirt board 7 is welded and fixed to the anchoring strip 24 , and the second plywood board 22 is anchored and connected to the anchoring strip 24 .

[0071] Based on the above-mentioned embodiment of the present application, during the assembly of the hot corner protection structure, the components are assembled one by one from the side close to the inner wall of the outer tank body 9. At this time, after the secondary insulation layer and the second plywood 22 are assembled, the anchoring strip 24 is fixed to the adjacent second plywood 22 by anchoring or other means, thereby providing a welding basis for the skirt board 7. Furthermore, an anchoring basis is provided when the secondary corrugated board 6 and the primary corrugated board 4 and other structures are assembled.

[0072] Specifically, refer to Figures 1 to 5 As shown in , when the hot corner protection structure is assembled, the embedded parts 5 are first pre-embedded on the inner wall of the outer tank body 9. At the same time, the upper insulation layer 11 and the first plywood 12 on both sides are pre-processed and formed, and the first plywood 12 is respectively fixed on both sides of the upper insulation layer 11 by gluing or other methods. Similarly, the lower insulation layer 21 and the second plywood 22 on both sides are pre-fixed and formed. Subsequently, the overall structure composed of the lower insulation layer 21 and the second plywood 22 is first fixed to the inner wall of the outer tank body 9 by anchoring with anchor rods or other methods, and the anchor bar 24 is fixed to the outer side of the second plywood 22 by anchoring or other methods. At this time, one end of the skirt panel 7 is first welded and fixed to the embedded plate 51, and then the other end of the skirt panel 7 is welded and fixed to the anchor bar 24. Then, the secondary corrugated plate 6 is installed, and the secondary corrugated plate 6 is fixed to the anchor bar 24 by anchoring or the like, and the end of the secondary corrugated plate 6 is welded and fixed to the skirt plate 7, and finally the third plywood 23 is fixed to the outside of the secondary corrugated plate 6 by anchoring. At this point, the lower insulation module 2 is completely assembled.

[0073] Subsequently, the overall structure composed of the upper heat insulation layer 11 and the first plywood board 12 is also fixed to the inner wall of the outer tank body 9 by means of anchor rod anchoring or the like, thus completing the fixation of the upper heat insulation module 1. Finally, the main corrugated plate 4 is respectively covered on the upper heat insulation module 1 and the lower heat insulation module 2, and at the same time, the main corrugated plate 4 is fixed to the adjacent first plywood board 12 and the third plywood board 23 by means of anchoring.

[0074] In addition, it should also be noted that in this application, when the skirt plate 7 is assembled and fixed, in order to facilitate the stable support of the skirt plate 7 during the fixing process, a filling support such as resin mortar 31 can also be provided between the skirt plate 7 and the lower heat insulation layer 21. At the same time, a horizontal plywood board 32 can also be provided between the resin mortar 31 and the skirt plate 7 to ensure the balance when supporting the skirt plate 7.

[0075] According to the second aspect of this application, a film enclosure system is provided. The film enclosure system includes an outer tank body 9 and the above-mentioned thermal corner protection structure, and the thermal corner protection structure is arranged in the accommodation cavity formed by the outer tank body 9.

[0076] Based on the above-mentioned embodiments of this application, the film enclosure system provided by this application includes the above-mentioned thermal corner protection structure, and thus also has the above-mentioned beneficial effects. To avoid repetition, it will not be elaborated here.

[0077] The preferred embodiments of this application have been described in detail above in conjunction with the drawings. However, this application is not limited to the specific details in the above-mentioned embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solutions of this application, and these simple modifications all belong to the protection scope of this application.

[0078] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, this application will not separately describe various possible combination methods.

[0079] In addition, any combination can be made between various different embodiments of this application, as long as it does not violate the idea of this application, it should also be regarded as the content disclosed by this application.

Claims

1. A hot corner protection structure, arranged in a receiving cavity formed by an outer tank body, characterized in that: The thermal corner protection structure comprises: The insulation module is arranged on the inner wall of the outer tank, and the insulation module includes an upper insulation module and a lower insulation module, and a gap is formed between the two; A main corrugated plate is arranged on a side of the insulation module away from the inner wall of the outer tank, and the main corrugated plate covers both the upper insulation module and the lower insulation module; An embedded part is fixed to the inner wall of the outer tank and is partially arranged on a side of the gap close to the upper insulation module; A secondary corrugated plate, disposed between the lower insulation module and the primary corrugated plate; A skirt plate connected between the embedded part and the secondary corrugated plate, and partially disposed on a side of the gap close to the upper insulation module; The embedded parts, the skirt plate and the secondary corrugated plate are sequentially connected to enclose a sealed cavity, and the gap and the primary corrugated plate are separated at both sides of the sealed cavity; The embedded part comprises an embedded plate and a connecting plate. The embedded plate is fixed to the inner wall of the outer tank body. One end of the connecting plate is connected to the embedded plate, and the other end is welded and fixed to the skirt plate.

2. The thermal corner protection structure according to claim 1, characterized in that: The end of the skirt plate is at least partially interlaced with the embedded part, and the end of the skirt plate is welded and fixed to the embedded part; The end portion of the skirt plate is at least partially staggered with the secondary corrugated plate, and the end portion of the skirt plate is welded and fixed to the secondary corrugated plate.

3. The thermal corner protection structure according to claim 2, characterized in that: The skirt plate is arranged on a side of the secondary corrugated plate close to the sealing cavity, and the skirt plate is arranged on a side of the embedded part away from the sealing cavity.

4. The thermal corner protection structure according to claim 1, characterized in that: The connecting plate is radially arranged in the gap along the accommodating cavity, and the connecting plate is arranged along the upper edge of the gap.

5. The thermal corner protection structure according to claim 1, characterized in that: The secondary corrugated plate is provided with longitudinal corrugations along the axial direction of the accommodation cavity, and an end cap is formed at one end of the longitudinal corrugations close to the skirt plate, and the end cap is welded and fixed to the skirt plate.

6. The thermal corner protection structure according to claim 1, characterized in that: The upper insulation module comprises an upper insulation layer, and the upper insulation layer is arranged between the main corrugated plate and the inner wall of the outer tank body; The lower insulation module further includes a lower insulation layer, and the lower insulation layer is arranged between the secondary corrugated plate and the inner wall of the outer tank.

7. The thermal corner protection structure according to claim 6, characterized in that: First plywood is provided on both sides of the upper insulation layer facing and away from the outer tank body, and the upper insulation layer is fixed to the first plywood to form the upper insulation module; The lower insulation layer is provided with second plywood on both sides facing and away from the outer tank body, and the lower insulation layer is fixedly connected to the second plywood to form the lower insulation module; A third plywood is arranged between the secondary corrugated board and the primary corrugated board, and the secondary corrugated board, the third plywood and the primary corrugated board are anchored and connected in sequence.

8. The thermal corner protection structure according to claim 7, characterized in that: An anchoring strip is further arranged between the secondary corrugated board and the adjacent second plywood board, the skirt board is fixed to the anchoring strip by welding, and the second plywood board is anchored to the anchoring strip.

9. A membrane enclosure system, characterized in that: The membrane enclosure system comprises: The outer tank; and, The thermal corner protection structure according to any one of claims 1 to 8, wherein the thermal corner protection structure is arranged in a receiving cavity formed by the outer tank body.

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