A cryogenic liquid cargo storage tank and a ship for transporting liquefied coolant products.

Abstract

This application discloses a cryogenic liquid cargo storage tank and a vessel for transporting liquefied products. The cryogenic liquid cargo storage tank includes a tank wall, a leak-proof sealing layer, and a thermal insulation barrier. The leak-proof sealing layer includes multiple corrugated plates with flat and corrugated portions. The thermal insulation barrier includes multiple insulation modules, with the corrugated portions facing the insulation modules. Each insulation module includes multiple accommodating spaces for housing the corrugated portions, and slits are provided in the areas of the accommodating spaces that support the corrugated portions. The vessel includes a hull and the aforementioned cryogenic liquid cargo storage tank disposed within the hull. By providing slits in the support areas of the insulation modules, this application effectively alleviates the concentrated stress transmitted to the insulation modules due to corrugated plate deformation, thereby protecting the insulation modules from damage and improving the structural integrity of the thermal insulation barrier and the reliability of the storage tank.

Description

Technical Field

[0001] This application relates to the field of storage and transportation equipment technology, and in particular to a cryogenic liquid cargo storage tank and a ship for transporting liquefied products. Background Technology

[0002] In cryogenic liquid storage tanks, to store cryogenic liquids such as liquefied natural gas, a thermal insulation barrier and a metal sealing leak-proof layer are typically installed sequentially on the inner side of the metal tank wall. The sealing leak-proof layer undergoes cryogenic shrinkage upon contact with the cryogenic liquid, and its corrugated plate structure is designed to absorb some of the deformation.

[0003] In existing technologies, the corrugated section of the corrugated sheet is usually in direct contact with the insulation layer or indirectly supported by simple fillers. However, due to the complex loads and deformations that occur in the storage tank during loading, transportation, and temperature changes, large concentrated stresses are generated in the direct or indirect contact area between the corrugated section and the insulation module. This stress is easily transferred to the insulation material, causing cracks to appear in the insulation module in this area, thereby weakening its insulation performance and affecting the structural safety of the storage tank. Summary of the Invention

[0004] In order to overcome the above-mentioned defects in the prior art, this application provides a cryogenic liquid cargo storage tank and a ship for transporting liquefied products.

[0005] The technical solution adopted by this application to solve its technical problem is:

[0006] In a first aspect, this application provides a cryogenic liquid cargo storage tank, comprising:

[0007] The tank wall;

[0008] A sealing and leak-proof layer includes multiple corrugated plates; each corrugated plate includes a flat portion and multiple corrugated portions.

[0009] A heat insulation barrier includes multiple heat insulation modules, with the corrugated portion facing the heat insulation module; the heat insulation module includes multiple receiving spaces for accommodating the corrugated portion, and the heat insulation module has slits in the areas of the receiving spaces that support the corrugated portion;

[0010] The accommodating space is a recessed area on the insulation module for adapting to the corrugated part, so that the recessed area is divided into a first support part and a second support part by the slit, and the first support part and the second support part respectively support the two sides of the corrugated part.

[0011] In one embodiment of this application, the slit extends along the direction from the crest of the corrugated portion toward the insulation module.

[0012] In one embodiment of this application, the cut is a V-shaped notch, and the opening direction of the V-shaped notch is opposite to the crest of the corrugated portion.

[0013] In one embodiment of this application, the cryogenic liquid cargo storage tank further includes: a support member;

[0014] The support member is disposed in the cut and is used only to support the corrugated part.

[0015] In one embodiment of this application, one side of the support abuts against the bottom region of the slit, and the other side is configured as a groove that adapts to the shape of the outer wall of the corrugated portion.

[0016] In one embodiment of this application, the thermal insulation module includes an upper thermal insulation module, a lower thermal insulation module, and a reinforcing layer for connecting the upper thermal insulation module and the lower thermal insulation module;

[0017] A portion of the reinforcing layer is used to form the bottom region of the cut, so that one side of the support abuts against a portion of the reinforcing layer, while the other side supports the corrugated portion.

[0018] In one embodiment of this application, an elastic layer and / or a thermal insulation layer are filled between the corrugated portion and the support member.

[0019] In one embodiment of this application, the hardness of the support member is greater than or equal to the hardness of the insulation module.

[0020] In one embodiment of this application, a sidewall insulation layer and / or a sidewall limiting layer are filled between the support member and the sidewall of the cut.

[0021] Secondly, this application also provides a vessel for transporting liquefied products, the vessel comprising a hull and a cryogenic liquid cargo storage tank disposed within the hull as described in any of the first aspects.

[0022] The beneficial effect of this application is that, by creating slits in the area supporting the corrugated portion of the insulation module, the stress transmission path and method are altered. When the corrugated portion compresses the insulation module due to factors such as assembly, temperature changes, or operational deformation, the force acting on the insulation module causes slight relative displacement or deformation in the support areas on both sides of the slit. This partially transforms the rigid compressive stress originally concentrated at the contact point into flexible stress that promotes local adaptive deformation of the insulation material. This process effectively absorbs and releases the pressure from the corrugated portion of the corrugated plate, preventing excessive stress concentration inside the insulation module and thus reducing the risk of cracking or breaking due to stress concentration. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of a corrugated plate according to one embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the structure of the corrugated plate supporting the thermal insulation module in one embodiment of this application;

[0026] Figure 3 This is a partial three-dimensional schematic diagram of the tank wall of a sealed and insulated storage tank according to another embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the support member supporting the corrugated plate in one embodiment of this application;

[0028] Figure 5 This is a perspective view of the support member in one embodiment of this application;

[0029] Figure 6 This is a perspective view of the support member in another embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the structure of a sealed and insulated storage tank according to one embodiment of this application;

[0031] Figure 8 This is a cross-sectional schematic diagram of a ship used for transporting liquefied coolant products according to one embodiment of this application, showing a sealed and insulated storage tank installed inside the hull.

[0032] The reference numerals in the figure are as follows: storage tank 1; tank wall 2; insulation module 31; accommodating space 311; slit 312; support 313; corrugated plate 41; corrugated part 411; reinforcing layer 70; main insulation barrier 300; secondary insulation barrier 301; main sealing leak-proof layer 400; secondary sealing leak-proof layer 401; ship 10; shell 11. Detailed Implementation

[0033] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The accompanying drawings only show components relevant to this application and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the shape, quantity, and proportion of each component can be arbitrarily changed, and the component layout may also be more complex. The descriptions of orientations such as "upper," "lower," "inner," "outer," "top surface," "bottom surface," and "side wall" in this specification are mainly for the purpose of facilitating explanation in conjunction with the accompanying drawings and are not intended to limit the spatial posture of this application during actual installation or use.

[0035] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present application. However, it will be apparent to those skilled in the art that embodiments of the present application may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present application.

[0036] The technical solution of this application is mainly applied to the storage and transportation of cryogenic liquid cargo, especially in membrane-type storage tanks. These tanks typically serve as the core storage units of ships, land-based storage tanks, or floating storage and regasification units. Due to the extremely low temperature of the loaded medium (e.g., liquefied natural gas (LNG) at approximately -162°C), the tank interior is subjected to significant temperature gradients, liquid sloshing loads, thermal expansion and contraction stresses, and mechanical stresses transmitted through hull deformation. Therefore, the stable support of the tank's corrugated plates and the protection of the insulation modules directly affect the long-term safe operation, insulation efficiency, and maintenance costs of the tank.

[0037] Please see Figure 1 as well as Figure 7 The embodiments of this application provide a cryogenic liquid cargo storage tank 1, which includes a tank wall 2, a thermal insulation barrier, and a sealing and leak-proof layer arranged sequentially from the outside to the inside. The tank wall 2 is typically formed by the hull structure or outer shell of a ship or storage tank, serving as the main load-bearing structure.

[0038] The sealing and leak-proof layer is used to directly contact and seal the cryogenic liquid inside the tank, and it includes multiple corrugated plates 41 spliced ​​together by welding or other methods. Each corrugated plate 41 typically has a large flat area and multiple corrugated portions 411 formed by periodic protrusions on the flat area. The main function of these corrugated portions 411 is to absorb the linear shrinkage deformation of the sealing and leak-proof layer caused by temperature changes.

[0039] A heat insulation barrier is installed between the tank wall 2 and the sealing and leak-proof layer. Its function is to prevent external heat from entering the tank and reduce the evaporation loss of the liquid. The heat insulation barrier includes multiple interlocking heat insulation modules 31. In this embodiment, the corrugated portion 411 of the corrugated plate 41 is oriented towards the heat insulation module 31, that is, the protrusion of the corrugated portion 411 points towards the heat insulation barrier.

[0040] Reference Figure 2 The insulation module 31 has multiple accommodating spaces 311 for accommodating the corrugated portion 411. The accommodating space 311 is a pre-formed area on the insulation module 31 to fit the shape of the corrugated portion 411. In particular, the insulation module 31 has a pre-cut slit 312 in the area of ​​the accommodating space 311 where the corrugated portion 411 actually contacts and supports it.

[0041] When the corrugated plate 41 is assembled onto the insulation module 31, the insulation module 31 needs to support the corrugated plate 41, meaning the corrugated plate 41 will exert pressure on the insulation module 31. Furthermore, when cryogenic liquid is filled into the storage tank, and the corrugated plate 41 cools and contracts, the corrugated portion 411 will undergo bending deformation in the direction toward or away from the tank wall 2, thereby applying a load to the inner wall of the accommodating space 311 below.

[0042] At this point, the slit 312 plays a crucial role: the slit 312 creates a pre-defined, controllable weak point or deformation guide zone in the support area of ​​the insulation module 31. When a load is applied to the support areas on both sides of the slit 312, the area is no longer a rigid whole, and the slit 312 allows the material on both sides to undergo small, relatively independent elastic deformation or displacement.

[0043] This process transforms the high stress originally concentrated in the contact area between the corrugated section 411 and the insulation module 31 into dispersed stress that drives localized adaptive deformation of the material. This greatly absorbs deformation energy and prevents excessive accumulation and concentration of stress within the brittle material of the insulation module 31. Therefore, even under severe thermal cycling, the risk of the insulation module 31 cracking or breaking due to stress concentration is significantly reduced, effectively protecting the structural integrity and thermal insulation performance of the insulation barrier.

[0044] In one specific implementation of this embodiment, such as Figure 2 As shown, the accommodating space 311 is a recessed area formed by machining or molding on the upper surface of the insulation module 31 to fit the outer contour of the corrugated portion 411. The shape of the recessed area matches the cross-sectional shape of the corrugated portion 411, so that the corrugated portion 411 can be embedded therein to obtain lateral restraint and support.

[0045] Optionally, the slit 312 can be formed at the bottom center of this recessed area and extend along the crest of the corrugated portion 411 in a direction pointing towards the interior of the insulation module 31 (i.e., approximately vertically). Thus, by forming the slit 312, a complete bottom support surface of the recessed area is divided into two relatively independent parts: a first support part and a second support part. The first support part and the second support part respectively correspond to and support the two sloping areas or root areas of the corrugated portion 411 along its width direction.

[0046] When the corrugated portion 411 deforms, the force it applies will act unevenly on the first support portion and the second support portion. Since the two are separated by the slit 312, they can each undergo small, asynchronous compression or warping deformation, thereby coordinating with each other to adapt to the complex deformation mode of the corrugated portion 411, providing more flexible and stable support, and further dispersing the contact stress.

[0047] As a preferred embodiment of the aforementioned slit 312 shape, the slit 312 can be specifically implemented as a V-shaped notch. The tip of this V-shaped notch points towards the interior of the insulation module 31, while its opening direction is opposite to the position of the crest of the corrugated portion 411, that is, the opening faces the trough of the corrugated portion 411 or directly faces the corrugated portion 411. The geometry of the V-shaped notch has good stress concentration guidance and release characteristics. When the load is transferred to the first and second supports on both sides of the V-shaped notch, the stress tends to be redistributed and released at the V-shaped apex, rather than generating destructive peak stress on the actual contact surface between the supports and the corrugated portion 411. At the same time, the V-shaped structure also gives the first and second supports a certain directional deformation tendency when subjected to force, enhancing their ability to follow the deformation of the corrugated portion 411.

[0048] remove Figure 2 In addition to the structure shown where the accommodating space 311 and the slit 312 are directly formed on the integral insulation module 31, this application also provides another preferred embodiment. Please refer to... Figure 3 and Figure 4 In this embodiment, by enlarging the size of the slit 312 to make it larger than the size of the support member 313, space is reserved for the installation of the support member 313 and possible filling materials. The support member 313 is then disposed as an independent component within the slit 312.

[0049] The support member 313 supports the corrugated portion 411 to bear its weight and deformation load, while the main body of the insulation module 31 is primarily responsible for thermal insulation and provides a mounting base for the support member 313 through the slit 312. This decoupling of support and insulation functions offers advantages: the support member 313 can be manufactured from materials with higher mechanical strength, better toughness, or superior fatigue resistance, such as engineering plastics or reinforced composite materials, which directly address the complex stresses from the corrugated portion 411. The insulation module 31, on the other hand, can continue to use high-performance insulation materials, such as polyurethane foam.

[0050] Furthermore, the support member 313 acts as a buffer or stress distributor, transforming concentrated loads into more evenly distributed loads before transferring them to the insulation module 31, thus providing effective protection for the insulation module 31. Figure 1 as well as Figure 3 Compared to the previous embodiment, this embodiment provides greater design freedom and more reliable long-term fatigue resistance by introducing an independent support component 313, making it particularly suitable for large LNG carrier storage tanks with extremely high reliability requirements.

[0051] Furthermore, such as Figure 4 , Figure 5 As shown, one side of the support member 313 (i.e., the lower side or the side facing the insulation module 31) is configured as a plane or a contact surface matching the shape of the bottom of the cut 312, and firmly abuts against the bottom area of ​​the cut 312 to ensure that the load can be effectively transferred downwards. The other side of the support member 313 (i.e., the upper side or the side facing the corrugated portion 411) is configured as a groove adapted to the shape of the outer wall of the corrugated portion 411. The contour of this groove complements the raised outer surface of the corrugated portion 411, thereby forming a large-area, well-fitting contact surface between the corrugated portion 411 and the support member 313. Compared with traditional point contact or line contact, this surface contact can effectively reduce contact pressure, distribute the load to a larger area, and further reduce local stress. At the same time, the good fit also helps to limit the lateral displacement of the corrugated portion 411, enhancing the overall stability of the structure.

[0052] Furthermore, refer to Figure 6 In the area where the support member 313 actually contacts and supports the corrugated part 411, a slit 312 can be pre-cut. The presence of the slit 312 plays a key role: the slit 312 creates a pre-set, controllable weak point or deformation guide area in the support area of ​​the support member 313. When a load is applied to the support area on both sides of the slit 312, the area is no longer a single rigid body, and the slit 312 allows the material on both sides to undergo small, relatively independent elastic deformation or displacement.

[0053] This process transforms the high stress originally concentrated in the contact area between the corrugated section 411 and the support 313 into dispersed stress that drives localized adaptive deformation of the material. This significantly absorbs deformation energy and prevents excessive stress accumulation and concentration within the material of the support 313. Therefore, even under severe thermal cycling, the risk of the support 313 cracking or breaking due to stress concentration is significantly reduced, effectively protecting the structural integrity of the support 313 and the overall thermal insulation performance of the insulation barrier.

[0054] Furthermore, the insulation module 31 can have a more complex layered structure to enhance its overall integrity. For example, the insulation module 31 may include an upper insulation module, a lower insulation module, and a reinforcing layer 70 sandwiched between the two for connection. Its main function is to improve the tensile and shear strength of the insulation module 31 and prevent it from breaking during transportation, installation, or use.

[0055] In this embodiment, a portion of the reinforcing layer 70 is specifically designed to form the bottom region of the slit 312. That is, during the fabrication of the insulation module 31, the depth of the slit 312 extends into the reinforcing layer 70, exposing the upper surface of the reinforcing layer 70 and forming the bottom of the slit 312. Thus, when the support member 313 is inserted into the slit 312, its lower side directly abuts against a portion of the reinforcing layer 70. As a high-strength intermediate layer, the reinforcing layer 70 provides a solid and reliable support foundation for the support member 313, ensuring that the load from the corrugated portion 411 can be efficiently transferred to the reinforcing layer 70 through the support member 313, and then distributed to a larger area of ​​the insulation module 31 and the tank wall 2 structure. This design utilizes the mechanical properties of the reinforcing layer 70, avoiding direct load application to local weak points of the brittle insulation material, effectively improving the reliability and durability of the support structure.

[0056] To further optimize the cushioning and sealing effect, an additional functional layer can be filled at the contact interface between the corrugated portion 411 and the support 313. Specifically, an elastic layer and / or an insulation layer can be filled.

[0057] The elastic layer, such as silicone rubber pads or elastic foam materials, primarily provides flexible cushioning to absorb minor impacts and vibrations caused by temperature fluctuations or ship rolling in the corrugated section 411, and to compensate for manufacturing and installation tolerances. It is worth noting that since there are multiple corrugated sections 411 on the corrugated plate 41, and the corrugated plate 41 is typically stamped from a large area of ​​steel sheet, the individual corrugated sections 411 will have certain tolerances. When the support member 313 is made of a relatively rigid material, the fit between different corrugated sections 411 and their corresponding support members 313 will differ, meaning the gaps between them will vary. Without the aforementioned elastic layer, some corrugated sections 411 on the corrugated plate 41 may be pressed too tightly against the support member 313, or the support member 313 may be unable to effectively support some corrugated sections 411.

[0058] For the insulation layer, such as a flexible insulation felt with low thermal conductivity, it is used to fill any gaps that may exist, reduce the local thermal bridging effect formed through the support 313, and ensure that the thermal performance of the entire insulation barrier is uniform.

[0059] In practical applications, only an elastic layer, only an insulation layer, or both can be filled, depending on a comprehensive consideration of cushioning performance, thermal insulation performance, and cost. The addition of an elastic layer and / or an insulation layer enhances both the mechanical and thermal performance of the support system.

[0060] Optionally, the hardness of the support member 313 can be greater than or equal to the hardness of the insulation module 31. Higher hardness of the support member 313 means it deforms less under the same load, maintaining its shape more stably, thus providing more precise and reliable support for the corrugated section 411. Simultaneously, the harder support member 313 is less likely to be crushed under localized pressure, effectively transferring the load downwards rather than undergoing large plastic deformation leading to support failure. If the hardness of the support member 313 is lower than that of the insulation module 31, it may deform excessively before the insulation module 31, failing to provide the intended protection and load distribution. The hardness of the support member 313 can be significantly greater than that of the insulation module 31, for example, by using rigid plastics, composite materials, or metals, while the insulation module 31 is made of soft foam material.

[0061] To prevent the support member 313 from shifting horizontally within the cut 312 and to further improve the local insulation effect, auxiliary materials can be filled between the support member 313 and the sidewall of the cut 312. Specifically, a sidewall insulation layer and / or a sidewall restraining layer can be filled. The function of the sidewall insulation layer is similar to that of the insulation layer between the corrugated part 411 and the support member 313, aiming to reduce heat leakage through the gaps in the sidewall of the cut 312. The sidewall restraining layer may be made of a material with certain adhesion and shear strength after curing (such as epoxy resin adhesive, polyurethane foam, etc.). Its function is to firmly bond or secure the support member 313 within the cut 312, preventing displacement due to structural fretting caused by ship movement or temperature changes, and ensuring the long-term stability of the support position. Similarly, the sidewall insulation layer and the sidewall restraining layer can be used individually or in combination as needed.

[0062] Considering economic efficiency, weight reduction, and providing a certain degree of deformation freedom for the insulation module 31, the support members 313 are typically not set as continuous long strips within the cut 312, but rather arranged at intervals. That is, along the length direction of the corrugated portion 411, multiple independent support member 313 segments are arranged at certain intervals in the cut 312. This interval arrangement has several advantages: First, it significantly reduces the amount of material used in the support members 313, lowering costs. Second, the gaps between the support members 313 provide exposed areas for the insulation module 31 material. These areas can undergo a certain degree of uniform compression when subjected to loads (mainly from the compressive stress transmitted from the corrugated portion 411 through the support members 313). This overall uniform compression deformation is itself a way to absorb energy and adapt to structural deformation, and it does not generate harmful concentrated stress. Finally, the interval arrangement also facilitates installation and maintenance.

[0063] Regarding the specific dimensions of the spacing arrangement, this application provides a quantifiable or operable implementation scheme, such as 100 mm to 300 mm. A spacing of less than 100 mm may result in overly dense support members 313, increasing costs and imposing excessive constraints on the deformation of the insulation module 31; a spacing greater than 300 mm may result in an excessively large span of the corrugated portion 411 between two support members 313, leading to excessive deflection under load, which may generate new bending moments and stress concentrations at the contact ends with the support members 313.

[0064] In the design of cryogenic liquid cargo storage tanks, such as membrane-type cargo tanks for LNG carriers, the insulation and sealing systems are typically double-layered to provide additional safety margins. Please refer to [further details needed]. Figure 7 The thermal insulation barrier may include a main thermal insulation barrier 300 and a secondary thermal insulation barrier 301. The main thermal insulation barrier 300 is the first line of thermal insulation near the cryogenic liquid cargo inside the tank, while the secondary thermal insulation barrier 301 is located between the main thermal insulation barrier 300 and the tank wall 2, serving as a second line of thermal insulation and a safety backup.

[0065] Accordingly, the sealing leak-proof layer also includes a primary sealing leak-proof layer 400 and a secondary sealing leak-proof layer 401. The primary sealing leak-proof layer 400 is in direct contact with the cryogenic liquid inside the tank and is the main leak-proof barrier; the secondary sealing leak-proof layer 401 is located between the primary sealing leak-proof layer 400 and the primary thermal insulation barrier 300 (in a double-barrier design). The improved support structure described in this application can be flexibly applied to such a double-layer system. The support member 313 can be disposed in the primary thermal insulation barrier 300 to support the corrugated portion 411 of the primary sealing leak-proof layer 400; it can also be disposed in the secondary thermal insulation barrier 301 to support the corrugated portion 411 of the secondary sealing leak-proof layer 401; or, in the most demanding cases, the support member 313 can be disposed in both the primary thermal insulation barrier 300 and the secondary thermal insulation barrier 301. This design flexibility allows engineers to select the most suitable support configuration scheme according to different safety standards, cost budgets, and technical requirements, providing reliable stress management for the entire double-layer protection system.

[0066] Reference Figure 7 In one embodiment of this application, the thermal insulation barrier includes a primary thermal insulation barrier 300 and a secondary thermal insulation barrier 301, and the sealing leak-proof layer includes a primary sealing leak-proof layer 400 and a secondary sealing leak-proof layer 401. The primary sealing leak-proof layer 400 is located on the innermost side and is used for direct contact with the cryogenic liquid cargo inside the tank; the primary thermal insulation barrier 300 is disposed on the outer side of the primary sealing leak-proof layer 400; the secondary sealing leak-proof layer 401 is disposed on the outer side of the primary thermal insulation barrier 300; and the secondary thermal insulation barrier 301 is disposed on the outer side of the secondary sealing leak-proof layer 401. This double-sealed, double-insulated enclosure system is widely used in large LNG carriers and can provide higher safety redundancy.

[0067] In this embodiment, the support member 313 is disposed in the main thermal insulation barrier 300 and is used only to support the corrugated portion 411 of the metal corrugated plate 41 of the main sealing and leak-proof layer 400. It is understood that in other embodiments not shown, the support member 313 may also be disposed in the secondary thermal insulation barrier 301 to support the corrugated portion 411 of the secondary sealing and leak-proof layer 401.

[0068] Similarly, in this embodiment, the reinforcing layer 70 is disposed in the main thermal insulation barrier 300. It is understood that in other embodiments not shown, the reinforcing layer 70 may also be disposed in the secondary thermal insulation barrier 301.

[0069] like Figure 8As shown, this application also provides a ship 10 for transporting liquefied products. The ship 10 includes a hull 11 and a sealed, insulated storage tank 1, as described in any of the preceding embodiments, disposed within the hull 11. The hull 11 is typically the inner shell of the ship or a structure within the cargo hold area. The sealed, insulated storage tank 1 is installed inside the hull 11 and is used to store cryogenic liquid cargoes such as LNG. Due to the use of the storage tank 1 structure with support members 313 and reinforcing layers 70 described in this application, the sway loads generated by the ship 10 during navigation can be effectively borne, and the insulation module 31 is less prone to damage, thereby improving the safety and economy of the ship 10 during transportation.

[0070] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0071] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

[0072] Finally, it should be noted that the above description of this application and its embodiments is not restrictive, and the accompanying drawings are only one embodiment of this application; the actual structure is not limited to this. In short, if those skilled in the art, inspired by this description, design similar structures and embodiments without departing from the spirit of this application, such designs should fall within the protection scope of this application.

Claims

1. A cryogenic liquid cargo storage tank (1), characterized in that, include: Can wall (2); The sealing and leak-proof layer includes multiple corrugated plates (41); the corrugated plates (41) include a flat portion and multiple corrugated portions (411). The heat insulation barrier includes multiple heat insulation modules (31), with the corrugated portion (411) facing the heat insulation module (31); the heat insulation module (31) includes multiple accommodating spaces (311) for accommodating the corrugated portion (411), and the heat insulation module (31) has a slit (312) in the area of ​​the accommodating space (311) that supports the corrugated portion (411). The accommodating space (311) is a recessed area on the insulation module (31) for adapting to the corrugated part (411), so that the recessed area is divided into a first support part and a second support part by the cut (312), and the first support part and the second support part respectively support the two sides of the corrugated part (411).

2. The cryogenic liquid cargo storage tank (1) according to claim 1, characterized in that, The cut (312) extends along the direction of the corrugated portion (411) towards the insulation module (31).

3. The cryogenic liquid cargo storage tank (1) according to claim 1, characterized in that, The cut (312) is a V-shaped notch, and the opening direction of the V-shaped notch is opposite to the crest of the corrugated part (411).

4. The cryogenic liquid cargo storage tank (1) according to claim 1, characterized in that, Also includes: Support component (313); The support member (313) is disposed in the slit (312) and is used only to support the corrugated part (411).

5. The cryogenic liquid cargo storage tank (1) according to claim 4, characterized in that, One side of the support (313) abuts against the bottom area of ​​the cut (312), and the other side is provided with a groove that adapts to the shape of the outer wall of the corrugated part (411).

6. The cryogenic liquid cargo storage tank (1) according to claim 4, characterized in that, The insulation module (31) includes an upper insulation module, a lower insulation module, and a reinforcing layer (70) for connecting the upper insulation module and the lower insulation module. A portion of the reinforcing layer (70) is used to form the bottom region of the cut (312) so that one side of the support (313) abuts against a portion of the reinforcing layer (70), and the other side supports the corrugated portion (411).

7. The cryogenic liquid cargo storage tank (1) according to claim 4, characterized in that, An elastic layer and / or a thermal insulation layer are filled between the corrugated part (411) and the support member (313).

8. The cryogenic liquid cargo storage tank (1) according to claim 4, characterized in that, The hardness of the support member (313) is greater than or equal to the hardness of the insulation module (31).

9. The cryogenic liquid cargo storage tank (1) according to claim 4, characterized in that, The space between the support member (313) and the sidewall of the cut (312) is filled with a sidewall insulation layer and / or a sidewall limiting layer.

10. A vessel (10) for transporting liquefied coolant products, characterized in that, The vessel includes a hull and a cryogenic liquid cargo storage tank (1) disposed in the hull (11) according to any one of claims 1 to 9.

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