Bevel structure of low-temperature storage container and mounting method

Abstract

The invention provides a bevel structure of a low-temperature storage container and a mounting method, and belongs to the technical field of liquefied gas storage containers. The bevel structure comprises a main shielding layer and a corner assembly located below the main shielding layer, the corner assembly comprises a first flexible supporting piece, a rib plate set and a supporting part, the main shielding layer covers the first flexible supporting piece, and the rib plate set is located on the face, away from the main shielding layer, of the first flexible supporting piece; the supporting part is positioned between the first flexible supporting sheet and the rib plate group, so that a cavity is formed between the first flexible supporting sheet and the rib plate group; the first flexible supporting sheet is a mesh material made of metal wires through a weaving process. The first flexible supporting piece woven by the metal wires can adapt to cold contraction in a low-temperature environment, so that the first flexible supporting piece has high strength and flexibility, can bear tension and pressure and adapts to certain deformation. The rib plate set, the first flexible supporting piece and the supporting part jointly form a stable structural system, and external loads and internal pressure can be effectively resisted.

Description

Technical Field

[0001] The present application relates to the technical field of liquefied gas storage containers, and in particular to a corner structure and installation method of a low-temperature storage container. Background Art

[0002] The wall of the cryogenic film storage container is a multi-layer structure, including an insulating layer, a shielding layer, etc. At present, for each layer of the fixed structure, it is not only necessary to provide axial tension, but also a large lateral force. Especially for liquefied gas carriers, the external environment they face is more complex and unstable than that of land-based storage tanks, and the requirements for mechanical properties are higher. In particular, the corner area is a weak link. In a complex and unstable external environment (such as pressure changes, temperature fluctuations, etc.), it is easy to have problems such as stress concentration, delamination or breakage.

[0003] In the prior art, the structure of the folded corner area is usually a multi-layer stacked design, with multiple layers of thermal insulation film (such as polyester film or metallized film) wrapped outside the film to reduce heat radiation and heat conduction. In the specific design of the primary and secondary layers, the thickness of the primary layer shielding is reduced as much as possible, and the thickness of the secondary layer shielding is increased. However, when faced with pressure changes, temperature fluctuations, etc., stress concentration problems will still occur in the folded corner area.

[0004] Therefore, there is an urgent need to provide a corner structure and installation method for a low-temperature storage container to improve the adaptability of each corner area to cold shrinkage deformation and stress concentration while also meeting the strength requirements of the corner area. Summary of the invention

[0005] The present application provides a corner structure and installation method of a low-temperature storage container, which improves the structural strength of each layer of the corner area of ​​the film storage container and provides a more convenient installation method of the corner area of ​​the film storage container.

[0006] In the first aspect, the present application provides a corner structure of a low-temperature storage container, comprising: a main shielding layer; a corner assembly located below the main shielding layer, the corner assembly comprising a first flexible support sheet, a rib plate group and a support portion, the main shielding layer covers the first flexible support sheet, the rib plate group is located on the side of the first flexible support sheet facing away from the main shielding layer, and the support portion is located between the first flexible support sheet and the rib plate group so that a cavity is formed between the first flexible support sheet and the rib plate group; the first flexible support sheet is a mesh material made of metal wire through a weaving process.

[0007] Through the above scheme, the first flexible support sheet woven with metal wire can adapt to the cold shrinkage in low temperature environment and reduce material fatigue and damage caused by temperature changes. The first flexible support sheet has high strength and certain flexibility, can withstand tension and pressure, and adapt to certain deformation. The main shielding layer is arranged on the first flexible support sheet, which can better adapt to the cold shrinkage in low temperature environment. The mesh material woven with metal wire usually uses metal with low thermal expansion coefficient (such as nickel-based alloy). This material can maintain a relatively stable size in low temperature environment and reduce structural deformation caused by temperature change. The porous structure formed by weaving can buffer the stress caused by thermal expansion and contraction. When the temperature changes, the pores of the mesh material can provide a certain deformation space, thereby reducing the stress concentration caused by thermal expansion and contraction. The woven mesh structure has a certain porosity, and these pores can form an air insulation layer to reduce the conduction of heat through the material. In a low-temperature storage container, this insulation effect helps to reduce the evaporation rate of liquefied gas and improve the thermal insulation performance of the storage container. Due to the high porosity of the mesh material, its heat conduction path is effectively interrupted, reducing the thermal bridge effect and further enhancing the thermal insulation performance. In addition, since the main shielding layer is covered on the first flexible support sheet, the first flexible support sheet provides support and protection for the main shielding layer, so that the main shielding layer can be effectively protected from external mechanical impact and wear, thereby reducing the maintenance frequency of the main shielding layer.

[0008] In the corner area of ​​the storage container, due to the particularity of the geometric shape, local instability is prone to occur. Therefore, a rib plate group is also provided to provide additional support and strength for the first flexible support sheet. It, together with the first flexible support sheet and the support portion, constitutes a stable structural system that can effectively resist external loads and internal pressures, and provide additional support for the first flexible support sheet, which can effectively prevent local instability in the corner area and ensure the integrity of the entire storage container structure. A cavity is formed between the rib plate group and the first flexible support sheet, and this cavity can serve as part of the thermal insulation layer. By reasonably designing the structure and spacing of the rib plate group, the thermal insulation performance of the cavity can be further optimized, and the heat transfer from the outside to the inside of the storage container can be reduced, thereby improving the thermal insulation efficiency of the storage container and reducing the evaporation rate of the liquefied gas. By optimizing the structural design of the corner area as described above, stress concentration points are reduced, and the risk of cracks or leaks in the storage container during use is reduced.

[0009] In a possible design, the first flexible support sheet has a protruding structure at a corner position corresponding to the corner assembly, and the protruding structure protrudes in a direction away from the rib plate group.

[0010] Through the above scheme, the raised structure can effectively disperse the stress concentration in the corner area. At the corner of the low-temperature storage container, stress is easily concentrated, resulting in structural fatigue or damage. By setting the raised structure, the stress can be distributed along the shape of the raised structure to avoid excessive local stress. The raised structure bulges away from the rib plate group, which can increase the structural rigidity of the corner area while maintaining the flexibility of the flexible support sheet. This design enables the support sheet to better adapt to thermal expansion and contraction in a low-temperature environment and reduce structural deformation caused by temperature changes. The raised structure provides a certain buffer space for thermal expansion and contraction. Under low-temperature conditions, differences in the thermal expansion coefficients of materials may cause structural deformation. The raised structure can absorb part of the deformation through its shape change, thereby reducing the stress caused by thermal expansion and contraction. At the same time, the raised structure can further optimize the thermal insulation performance of the corner area. Since the raised part increases the thickness of the air insulation layer, it can effectively reduce the conduction of heat through the corner area, thereby reducing the heat loss of the storage container.

[0011] In a possible design, a second flexible support sheet is also included. The second flexible support sheet is arranged on a side of the rib plate group facing the first flexible support sheet or on a side of the rib plate group facing away from the first flexible support sheet. The second flexible support sheet is parallel to the first flexible support sheet, and the second flexible support sheet is a mesh material made of metal wire or a weaving process.

[0012] Through the above scheme, the first flexible support sheet and the second flexible support sheet work together to provide double support for the folded corner area, significantly improving the stability and bearing capacity of the structure. The second flexible support sheet can further disperse stress and reduce stress concentration points, especially in the folded corner area where stress concentration is prone to occur. An additional air insulation layer is formed between the second flexible support sheet and the first flexible support sheet, further reducing the conduction of heat through the folded corner area and improving the thermal insulation performance of the storage container. The porous structure of the mesh material and the design of the double support sheet can effectively interrupt the thermal bridge effect and reduce heat loss. The design of adding the second flexible support sheet to the folded corner structure of the low-temperature storage container can significantly improve the stability, thermal insulation performance, deformation resistance, durability and convenience of installation and maintenance of the structure. The first flexible support sheet, the second flexible support sheet and the rib plate group together constitute a stable multi-layer support system. This design can effectively disperse stress, reduce stress concentration points and improve the structural stability of the folded corner area.

[0013] In one possible design, a secondary shielding layer is also included; the rib plate group has a first surface facing the first flexible support sheet and a second surface facing away from the first flexible support sheet, and the second flexible support sheet is arranged on the first surface or the second surface; when the second flexible support sheet is arranged on the first surface, the secondary shielding layer covers the surface of the second flexible support sheet facing away from the first surface; when the second flexible support sheet is arranged on the second surface, the secondary shielding layer covers the surface of the second flexible support sheet facing away from the second surface.

[0014] Through the above solution, by covering the secondary shielding layer on the outside of the second flexible support sheet, the sealing performance of the corner area is further enhanced. The rib plate group has two faces: a first face (facing the first flexible support sheet) and a second face (facing away from the first flexible support sheet). According to actual needs, the positions of the second flexible support sheet and the secondary shielding layer can be flexibly adjusted. This design can be optimized according to the specific working conditions and performance requirements of the storage container and has strong adaptability.

[0015] In a possible design, a first adhesive layer is also provided. When the second flexible support sheet is provided on the first surface, the first adhesive layer is located between the first flexible support sheet and the second flexible support sheet; when the second flexible support sheet is provided on the second surface, the first adhesive layer is located between the first flexible support sheet and the rib plate group.

[0016] Through the above solution, the first adhesive layer can effectively achieve bonding and fixing between layers, so that the layers connected on both sides of the first adhesive layer better form an integral structure, thereby improving the stability of the entire corner assembly. The first adhesive layer can effectively fill the tiny gaps between layers, improve the overall sealing, and reduce the risk of cryogenic liquid leakage.

[0017] In a possible design, it also includes a second insulation layer, a second adhesive layer and a connecting component, wherein the second adhesive layer is between the secondary shielding layer and the second insulation layer; when the secondary shielding layer covers the surface of the second flexible support sheet facing away from the first surface, the second surface of the rib plate group is in contact and connected with the second adhesive layer, wherein the connecting component fixes the rib plate group, the second adhesive layer and the second insulation layer.

[0018] Through the above scheme, the second insulation layer is used to further enhance the thermal insulation performance. The second adhesive layer is located between the secondary shielding layer and the second insulation layer, and is fixed by glue to firmly connect the two. When the secondary shielding layer covers the surface of the second flexible support sheet away from the first surface, the second surface of the rib plate group is in contact and connected with the second adhesive layer. The rib plate group, the secondary shielding layer, the second adhesive layer and the second insulation layer are fixed together by the connecting component to form a highly stable multi-layer structure. This design can effectively disperse stress, reduce stress concentration points, and improve the structural stability of the corner area. The addition of the connecting component provides mechanical fixation, which, combined with the bonding effect of the second adhesive layer, further enhances the integrity and reliability of the structure.

[0019] In a possible design, a mounting groove is provided in the second adhesive layer for accommodating the rib plate set in the mounting groove.

[0020] Through the above scheme, by setting the installation groove in the second adhesive layer, the rib plate group can be accurately accommodated and fixed. This design can ensure the close combination between the rib plate group and the second adhesive layer, thereby improving the stability of the overall structure. The design of the installation groove is similar to the "mortise and tenon structure", which can effectively disperse stress and reduce structural damage caused by local stress concentration. The installation groove provides precise positioning for the rib plate group, facilitates quick installation and fixation, and reduces alignment errors during installation. The design of the installation groove can reduce air convection between the second adhesive layer and the rib plate group, further enhancing the thermal insulation performance.

[0021] In a possible design, the second insulation layer is installed on the inner wall of the storage tank; the thickness of the second adhesive layer is greater than the thickness of the first adhesive layer; the thickness of the second insulation layer is greater than the thickness of the cavity, and the thickness of the cavity is equal to the height of the support part.

[0022] Through the above scheme, the inner wall of the storage tank can provide support for the insulation layer. The thicker second adhesive layer can evenly disperse the stress to a wider area to avoid excessive local stress. This design can effectively reduce structural damage caused by temperature changes or external loads, absorb thermal expansion and contraction stress in low-temperature environments, and reduce structural deformation. Generally, the cavity can be vacuum or filled with a first insulation layer, which can play a role in insulation. However, the main function of the corner component, including the cavity part, is to support and transfer the load. Therefore, the second insulation layer in the storage tank is the main insulation layer, and the thickness of the second insulation layer is greater than the height of the support part (the first insulation layer) in order to better play a role in insulation. The combination of the second insulation layer and the thick adhesive layer can effectively interrupt the thermal bridge effect, reduce heat loss, and improve the overall insulation efficiency of the storage container.

[0023] In a possible design, the support portion is in the shape of a strip and has a length extension direction and a width extension direction. The length extension direction of the support portion is parallel to the fold line formed by the corner; the width extension direction of the support portion is perpendicular to the fold line formed by the corner.

[0024] Through the above scheme, the strip support part can effectively disperse stress and reduce stress concentration points. The strip support part provides high rigidity in the length direction and can effectively resist deformation. This design significantly improves the deformation resistance of the corner area, especially in low temperature environments when the mechanical properties of the material may change. The layout of the length and width directions of the support part provides multi-directional support, which can simultaneously resist forces along the fold line and perpendicular to the fold line, further enhancing the integrity of the structure.

[0025] In a possible design, the support portion extends to the root of the corner in the width extension direction; the support portion is connected to the first flexible support sheet and the rib plate group by welding or screwing.

[0026] Through the above scheme, the support portion extends to the root of the corner in the width direction, which means that the width of the support portion is larger, thereby providing the corner assembly with higher rigidity and being able to effectively resist deformation. Screw connection is convenient for disassembly and maintenance, and is suitable for scenarios that require frequent inspection or replacement. The strip support portion has high rigidity and can effectively resist deformation. This design can significantly improve the deformation resistance of the corner area, especially in low temperature environments when the mechanical properties of the material may change. In addition, the support portion plays the role of supporting and connecting the first flexible support sheet and the rib plate group, so that the corner assembly becomes a stable integral structure, thereby improving the stability of the corner structure.

[0027] In the second aspect, the present application provides an installation method of a corner structure of a low-temperature storage container, including: providing a main shielding layer; assembling a first flexible support sheet, a rib plate group and a support portion to form a corner assembly, the main shielding layer covering the upper surface of the corner assembly, wherein the main shielding layer covers the first flexible support sheet, the rib plate group is located on the side of the first flexible support sheet away from the main shielding layer, and the support portion is located between the first flexible support sheet and the rib plate group so that a cavity is formed between the first flexible support sheet and the rib plate group; the first flexible support sheet is a mesh material made of metal wire through a weaving process.

[0028] In a possible design, before installing the corner assembly and the main shielding layer, the method further includes: laying a resin glue layer, a second insulation layer, and a second adhesive layer in sequence on the cement inner wall of the storage container.

[0029] The beneficial effects of the installation method of the corner structure of the low-temperature storage container provided in the above-mentioned second aspect and each possible design of the above-mentioned second aspect can be referred to the beneficial effects brought about by the above-mentioned first aspect and each possible implementation method of the first aspect, and will not be repeated here.

[0030] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 This is a schematic diagram of a woven mesh structure provided in one embodiment of the present application.

[0033] Figure 2 It is a schematic structural diagram of a corner assembly of a low-temperature storage container provided in one embodiment of the present application.

[0034] Figure 3 It is a schematic structural diagram of a corner component with a protruding structure provided in another embodiment of the present application.

[0035] Figure 4 This is a schematic structural diagram of a support portion provided in another embodiment of the present application extending to the root of a corner in a width extension direction.

[0036] Figure 5 This is a schematic diagram of another embodiment of the present application in which a second flexible support sheet is disposed on a side of the rib plate group facing away from the first flexible support sheet.

[0037] Figure 6 It is a schematic diagram of the corner structure of a low-temperature storage container in one embodiment of the present application.

[0038] Figure 7 It is a schematic diagram of the corner structure of a low-temperature storage container in another embodiment of the present application.

[0039] Description of reference numerals: 100, woven mesh structure; 110, first flexible support sheet; 111, raised structure; 120, second flexible support sheet; 200, rib plate group; 300, support part; 400, cement inner wall; 410, resin glue layer; 420, third glue layer; 430, second insulation layer; 440, second glue layer; 501, main shielding layer; 502, secondary shielding layer. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application 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 specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0042] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0045] In addition, the terms "first", "second", etc. in the specification 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 the features.

[0046] In the description of the present application, unless otherwise specified, “plurality” means more than two (including two), and similarly, “plurality groups” means more than two (including two).

[0047] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a barrier, such as a fixed connection through screws, bolts or other barrier; the physical connection may also be a detachable connection, such as a mutual snap-on or snap-fit ​​connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] Cryogenic storage containers are thin film storage containers used to store cryogenic liquids (such as liquefied natural gas, etc.). Thin film technology is usually used to reduce heat conduction and evaporation losses. The film is wrapped with multiple layers of thermal insulation film (such as polyester film or metallized film) to reduce heat radiation and heat conduction. The corner area of ​​the film storage container is the weak link of the multi-layer structure. In complex and unstable external environments (such as pressure changes, temperature fluctuations, etc.), it is easy to have problems such as stress concentration, delamination or breakage.

[0049] In the related art, the structure of the corner area is usually a multi-layer stacked design, but lacks targeted reinforcement measures, resulting in insufficient strength.

[0050] In view of this, the embodiment of the present application provides a corner structure and installation method of a low-temperature storage container. By designing a corner assembly, the corner assembly includes a first flexible support sheet, a rib plate group and a support portion. The main shielding layer is covered on the first flexible support sheet, the rib plate group is located on the side of the first flexible support sheet away from the main shielding layer, and the support portion is located between the first flexible support sheet and the rib plate group so that a cavity is formed between the first flexible support sheet and the rib plate group; the first flexible support sheet is a mesh material made of metal wire through a weaving process. The first flexible support sheet has high strength and certain flexibility, can withstand tension and pressure, and adapt to certain deformation. Therefore, the first flexible support sheet woven with metal wire can adapt to thermal expansion and contraction in a low-temperature environment, and reduce material fatigue and damage caused by temperature changes. The main shielding layer is arranged on the first flexible support sheet, which can better use the thermal expansion and contraction in a low-temperature environment. The rib plate group can effectively prevent local instability in the corner area and ensure the integrity of the entire storage container structure. Through the structural design of the corner area in the present application, stress concentration points are reduced, and the risk of cracks or leaks in the storage container during use is reduced.

[0051] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0052] Figure 2 It is a schematic structural diagram of the corner assembly of the low-temperature storage container provided in this embodiment. Figure 6 This is a schematic diagram of the angle structure of a low temperature storage container in one embodiment. Figure 2 and Figure 6In this embodiment, a corner structure of a low-temperature storage container is provided, including: a main shielding layer 501 and a corner component located below the main shielding layer 501; the corner component includes a first flexible support sheet 110, a rib plate group 200 and a support portion 300, the main shielding layer 501 is covered on the first flexible support sheet 110, the rib plate group 200 is located on a side of the first flexible support sheet 110 away from the main shielding layer 501, and the support portion 300 is located between the first flexible support sheet 110 and the rib plate group 200 so that a cavity is formed between the first flexible support sheet 110 and the rib plate group 200.

[0053] The main shielding layer 501 is a metal film, for example, S30403 stainless steel, which is used as the innermost layer of the low-temperature storage container and directly contacts with the low-temperature liquid, thereby ensuring the sealing of the low-temperature storage container.

[0054] Figure 1 This is a schematic diagram of the woven mesh structure 100 provided in this embodiment. Figure 1 The first flexible support sheet 110 is a woven mesh structure 100 made of metal wires through a weaving process. The material of the metal wires includes stainless steel, low carbon steel, copper, aluminum, nickel alloy, etc. Different materials can be selected according to needs to meet the requirements of corrosion resistance, low temperature resistance or hardness. The diameter of the metal wire is 5mm-20mm.

[0055] The weaving structure of the first flexible support sheet 110 can be plain weave, twill weave, dense weave or the like, the mesh shape is usually square, rectangular or diamond, and the mesh diameter may be no greater than 5 mm.

[0056] The first flexible support sheet 110 has high strength and certain flexibility, can withstand tension and pressure, and adapt to certain deformation. Therefore, the first flexible support sheet 110 woven with metal wire can adapt to thermal expansion and contraction in a low temperature environment, reducing material fatigue and damage caused by temperature changes. The main shielding layer 501 is arranged on the first flexible support sheet 110, which can better use the thermal expansion and contraction in a low temperature environment. The mesh material woven with metal wire usually uses metal with a low thermal expansion coefficient (such as stainless steel or nickel-based alloy). This material can maintain a relatively stable size in a low temperature environment and reduce structural deformation caused by temperature changes. The porous structure formed by weaving can buffer the stress caused by thermal expansion and contraction. When the temperature changes, the pores of the mesh material can provide a certain deformation space, thereby reducing the stress concentration caused by thermal expansion and contraction. The woven mesh structure 100 has a certain porosity, and these pores can form an air insulation layer to reduce the conduction of heat through the material. In a low-temperature storage container, this insulation effect helps to reduce the evaporation rate of liquefied gas and improve the thermal insulation performance of the storage container. Due to the high porosity of the mesh material, its heat conduction path is effectively interrupted, reducing the thermal bridge effect and further enhancing the thermal insulation performance. In addition, in the corner area of ​​the storage container, due to the particularity of the geometric shape, local instability is prone to occur.

[0057] In this embodiment, the rib plate group 200 may be composed of a plurality of rib plate strips arranged in an array, and the width of the rib plate strips is 5 mm-5 cm. The rib plate strips may be made of carbon steel, stainless steel, aluminum alloy, titanium alloy, composite material or plastic.

[0058] The rib plate group 200 can provide additional support and strength for the first flexible support sheet 110. It, together with the first flexible support sheet 110 and the support portion 300, forms a stable structural system that can effectively resist external loads and internal pressures, provide additional support for the first flexible support sheet 110, and effectively prevent local instability in the angled area, thereby ensuring the integrity of the entire storage container structure. A cavity is formed between the rib plate group 200 and the first flexible support sheet 110, and this cavity can serve as part of the thermal insulation layer. By reasonably designing the structure and spacing of the rib plate group 200, the thermal insulation performance of the cavity can be further optimized, and the heat transfer from the outside to the inside of the storage container can be reduced, thereby improving the thermal insulation efficiency of the storage container and reducing the evaporation rate of the liquefied gas. Through the design of the above-mentioned angled structure, the stress concentration points in the angled area of ​​the low-temperature storage container are reduced, and the risk of cracks or leaks in the storage container during use is reduced.

[0059] Figure 3 Schematic diagram of the structure of the corner component with the protruding structure 111 provided. Please refer to Figure 3In the present embodiment, the corner position of the first flexible support sheet 110 corresponding to the corner assembly is set as a protruding structure 111, and the protruding structure 111 protrudes in a direction away from the rib plate group 200.

[0060] In some embodiments, the protrusion structure 111 may present a smooth arc transition, or may present an inclined surface transition, forming a trapezoidal or triangular protrusion, or a wavy or curved protrusion.

[0061] Through the above scheme, the raised structure 111 can effectively disperse the stress concentration in the corner area. At the corner of the low-temperature storage container, stress is easily concentrated, resulting in structural fatigue or damage. By setting the raised structure 111, the stress can be distributed along the shape of the raised structure to avoid excessive local stress. The raised structure 111 is raised in the direction away from the rib plate group 200, which can increase the structural rigidity of the corner area while maintaining the flexibility of the flexible support sheet. This design enables the support sheet to better adapt to thermal expansion and contraction in a low-temperature environment and reduce structural deformation caused by temperature changes. The raised structure 111 provides a certain buffer space for thermal expansion and contraction. Under low-temperature conditions, differences in the thermal expansion coefficients of materials may cause structural deformation. The raised structure 111 can absorb part of the deformation through its shape change, thereby reducing the stress caused by thermal expansion and contraction. At the same time, the raised structure 111 can also further optimize the thermal insulation performance of the corner area. Since the raised part increases the thickness of the air insulation layer, it can effectively reduce the conduction of heat through the corner area, thereby reducing the heat loss of the storage container.

[0062] Figure 5 This is a schematic diagram of another embodiment in which the second flexible support sheet 120 is arranged on a side of the rib plate group 200 away from the first flexible support sheet 110. Figure 5 In some embodiments, a second flexible support sheet 120 is further included. The second flexible support sheet 120 is arranged on a side of the rib plate group 200 facing the first flexible support sheet 110 or on a side of the rib plate group 200 away from the first flexible support sheet 110. The second flexible support sheet 120 is parallel to the first flexible support sheet 110, and the second flexible support sheet 120 is a mesh material made of metal wire or a weaving process.

[0063] Through the above scheme, the first flexible support sheet 110 and the second flexible support sheet 120 work together to provide double support for the folded corner area, significantly improving the stability and bearing capacity of the structure. The second flexible support sheet 120 can further disperse stress and reduce stress concentration points, especially in the folded corner area where stress concentration is prone to occur. An additional air insulation layer is formed between the second flexible support sheet 120 and the first flexible support sheet 110, further reducing the conduction of heat through the folded corner area and improving the thermal insulation performance of the storage container. The porous structure of the mesh material and the design of the double support sheet can effectively interrupt the thermal bridge effect and reduce heat loss. The design of adding the second flexible support sheet 120 to the folded corner structure of the low-temperature storage container can significantly improve the stability, thermal insulation performance, deformation resistance, durability and convenience of installation and maintenance of the structure. The first flexible support sheet 110, the second flexible support sheet 120 and the rib plate group 200 together constitute a stable multi-layer support system. This design can effectively disperse stress, reduce stress concentration points, and improve the structural stability of the folded corner area.

[0064] In this embodiment, the shape and size of the second flexible support sheet 120 may be the same as those of the first flexible support sheet 110 .

[0065] Figure 6 Schematic diagram of the corner structure of a low-temperature storage container in one embodiment. Figure 7 FIG. 5 is a schematic diagram of a corner structure of a low-temperature storage container in another embodiment. The corner structure of the low-temperature storage container further includes a secondary shielding layer 502 .

[0066] The secondary shielding layer 502 can be made of the same material as the primary shielding layer 501, and is combined with the primary shielding layer 501 to form a bimetallic film shielding layer, which has better anti-leakage capability. There is a gap between the secondary shielding layer 502 and the primary shielding layer 501, so that the temperature impact of the secondary shielding layer 502 is smaller, and the anti-leakage capability is guaranteed.

[0067] In this embodiment, the rib plate group 200 has a first surface facing the first flexible support sheet 110 and a second surface facing away from the first flexible support sheet 110, and the second flexible support sheet 120 is arranged on the first surface or the second surface; when the second flexible support sheet 120 is arranged on the first surface, the secondary shielding layer 502 covers the surface of the second flexible support sheet 120 facing away from the first surface; when the second flexible support sheet 120 is arranged on the second surface, the secondary shielding layer 502 covers the surface of the second flexible support sheet 120 facing away from the second surface.

[0068] Through the above solution, by covering the secondary shielding layer 502 on the outer side of the second flexible support sheet 120, the sealing performance of the corner area is further enhanced. The rib plate group 200 has two surfaces: a first surface (facing the first flexible support sheet 110) and a second surface (facing away from the first flexible support sheet 110). According to actual needs, the positions of the second flexible support sheet 120 and the secondary shielding layer 502 can be flexibly adjusted. This design can be optimized according to the specific working conditions and performance requirements of the storage container, and has strong adaptability.

[0069] In some embodiments, a first adhesive layer is further provided, and when the second flexible support sheet 120 is provided on the first surface, the first adhesive layer is located between the first flexible support sheet 110 and the second flexible support sheet 120. When the second flexible support sheet 120 is provided on the second surface, the first adhesive layer is located between the first flexible support sheet 110 and the rib plate group.

[0070] In some embodiments, the main shielding layer 501 may be directly covered on the first flexible support sheet 110 , or a first adhesive layer may be provided between the main shielding layer 501 and the first flexible support sheet 110 to achieve bonding and fixation between the layers.

[0071] The secondary shielding layer 502 may be directly covered on the second flexible support sheet 120 , or a first adhesive layer may be provided between the second flexible support sheet 120 and the secondary shielding layer 502 to better achieve bonding and fixation between the layers.

[0072] Through the above solution, the first adhesive layer can effectively achieve bonding and fixing between layers, so that the layers connected on both sides of the first adhesive layer better form an integral structure, thereby improving the stability of the entire corner assembly. The first adhesive layer can effectively fill the tiny gaps between layers, improve the overall sealing, and reduce the risk of cryogenic liquid leakage.

[0073] In this embodiment, it also includes a second insulation layer 430, a second adhesive layer 440 and a connecting component, and the second adhesive layer 440 is between the sub-shielding layer 502 and the second insulation layer 430; when the sub-shielding layer 502 covers the surface of the second flexible support sheet 120 facing away from the first surface, the second surface of the rib plate group 200 is in contact and connected with the second adhesive layer 440, wherein the connecting component fixes the rib plate group 200 and the second adhesive layer 440 and the second insulation layer 430.

[0074] The material of the second heat insulating layer 430 can be enhanced polyurethane foam. Enhanced polyurethane foam has both low temperature heat insulation performance and pressure resistance. The second heat insulating layer 430 is used to further enhance the thermal insulation performance.

[0075] The second adhesive layer 440 is located between the secondary shielding layer 502 and the second thermal insulation layer 430. The second adhesive layer 440 is bonded and fixed by glue, and two adjacent layers of the second adhesive layer 440 can be bonded. When the secondary shielding layer 502 covers the surface of the second flexible support sheet 120 away from the first surface, the second surface of the rib plate group 200 is in contact and connected with the second adhesive layer 440. The rib plate group 200, the secondary shielding layer 502, the second adhesive layer 440 and the second thermal insulation layer 430 are fixed together by the connecting assembly to form a highly stable multi-layer structure. This design can effectively disperse stress, reduce stress concentration points, and improve the structural stability of the corner area. The addition of the connecting assembly provides mechanical fixation, which, combined with the bonding effect of the second adhesive layer 440, further enhances the integrity and reliability of the structure.

[0076] In this embodiment, when the secondary shielding layer 502 covers the surface of the second flexible supporting sheet 120 away from the first surface, a mounting groove is provided in the second adhesive layer 440 for accommodating the rib plate assembly 200 in the mounting groove.

[0077] Through the above scheme, by setting the installation groove in the second adhesive layer 440, the rib plate group 200 can be accurately accommodated and fixed. This design can ensure the close connection between the rib plate group 200 and the second adhesive layer 440, thereby improving the stability of the overall structure. The design of the installation groove is similar to the "mortise and tenon structure", which can effectively disperse stress and reduce structural damage caused by local stress concentration. The installation groove provides precise positioning for the rib plate group 200, facilitates quick installation and fixation, and reduces alignment errors during installation. The design of the installation groove can reduce air convection between the second adhesive layer 440 and the rib plate group 200, further enhancing the thermal insulation performance.

[0078] The second insulation layer 430 is installed on the inner wall of the storage tank. The storage tank body provides support for the thermal insulation film and provides protection for the thermal insulation film to avoid damage such as collision and friction from the outside.

[0079] In this embodiment, the thickness of the second adhesive layer 440 is greater than that of the first adhesive layer. The thicker second adhesive layer 440 can evenly distribute the stress to a wider area to avoid excessive local stress. This design can effectively reduce structural damage caused by temperature changes or external loads, absorb thermal expansion and contraction stress in low temperature environments, and reduce structural deformation.

[0080] In this embodiment, the thickness of the second heat insulating layer 430 is greater than the thickness of the cavity, and the thickness of the cavity is equal to the height of the support portion 300 .

[0081] The support part 300 is a plate body having length, width and height, wherein the length of the support part is parallel to the fold line formed by the corner, the width is perpendicular to the fold line formed by the corner, and the height is the distance between the first flexible support plate and the second flexible support plate or the rib plate group. The first insulation layer can be filled in the cavity, and the thickness of the first insulation layer is equal to the thickness of the cavity, which is also equal to the height of the support part 300.

[0082] In some embodiments, the cavity may also be in a vacuum state.

[0083] The cavity part is a vacuum or the first insulation layer can play a role in insulation. However, the main function of the corner component (including the cavity part) is to support and transfer the load, so the second insulation layer 430 in the storage tank is the main insulation layer, and the thickness of the second insulation layer 430 is greater than the height of the support part 300 (the thickness of the first insulation layer) in order to better play a role in insulation. The combination of the second insulation layer 430 and the thick adhesive layer can effectively break the thermal bridge effect, reduce heat loss, and improve the overall insulation efficiency of the storage container.

[0084] In this embodiment, the support portion 300 is in the shape of a strip and has a length extension direction and a width extension direction. The length extension direction of the support portion 300 is parallel to the fold line formed by the corner; the width extension direction of the support portion 300 is perpendicular to the fold line formed by the corner.

[0085] The support portion 300 supports and connects the first flexible support sheet 110 and the rib plate group 200, so that the corner assembly becomes a stable integral structure, thereby improving the stability of the angled structure. The strip support portion 300 can effectively disperse stress and reduce stress concentration points. The strip support portion 300 provides higher rigidity in the length direction and can effectively resist deformation. This design significantly improves the deformation resistance of the angled area, especially in low temperature environments when the mechanical properties of the material may change. The layout of the support portion 300 in the length and width directions provides multi-directional support, which can simultaneously resist forces along the fold line direction and perpendicular to the fold line direction, further enhancing the integrity of the structure.

[0086] Figure 4 and Figure 5 The support portion 300 is provided as a schematic diagram of a structure extending to the root of a corner in its width extension direction. Figure 4 and Figure 5 , support parts 300 are provided on both sides of the corner, and at least one support part 300 extends to the root of the corner in the width extension direction. The support part 300 extends to the root of the corner in the width direction, which means that the width of the support part 300 is large, thereby providing higher rigidity for the corner component and being able to effectively resist deformation.

[0087] In this embodiment, the support portion 300 is connected to the first flexible support sheet 110 and the rib plate group 200 by welding or screwing. Welding can provide a high-strength connection to ensure the stability of the structure in a low-temperature environment; screwing is easy to disassemble and maintain, and is suitable for scenes that require frequent inspection or replacement. Welding or screwing the first flexible support sheet 110 and the rib plate group 200 can make the corner assembly more stable and improve the stability of the corner area.

[0088] Based on the above embodiment, this embodiment also provides a method for installing a corner structure of a low-temperature storage container, including: First, lay a resin glue layer 410 on the cement inner wall 400 of the storage container to make the inner wall flat, then lay a third glue layer 420 on the resin glue layer 410, and then lay a second insulation layer 430 on the third glue layer 420 and fix it on the cement inner wall 400 of the storage container.

[0089] The second adhesive layer 440 is laid on the surface of the second heat insulating layer 430 , and then a corner assembly having a primary shielding layer 501 and a secondary shielding layer 502 is arranged on the second adhesive layer 440 .

[0090] In this embodiment, the first flexible support sheet 110, the rib plate group 200 and the support portion 300 are assembled to form a corner component, and the main shielding layer 501 covers the upper surface of the corner component, wherein the main shielding layer 501 covers the first flexible support sheet 110, the rib plate group 200 is located on the side of the first flexible support sheet 110 away from the main shielding layer 501, and the support portion 300 is located between the first flexible support sheet 110 and the rib plate group 200 so that a cavity is formed between the first flexible support sheet 110 and the rib plate group 200; the first flexible support sheet 110 is a mesh material made of metal wire through a weaving process.

[0091] In this embodiment, a second flexible sheet is further provided. The second flexible sheet is laid on the first surface facing the first flexible support sheet 110 ; the secondary shielding layer 502 is on the surface of the second flexible sheet facing the first flexible support sheet 110 .

[0092] In some embodiments, a mounting groove is provided on the second adhesive layer 440 , the rib plate group 200 is accommodated in the mounting groove, and then the second flexible support sheet 120 and the secondary shielding layer 502 are sequentially laid on the first surface of the rib plate group 200 facing the first flexible support sheet 110 .

[0093] In summary, the angle structure of the low-temperature storage container in the present application can adapt to the cold shrinkage in a low-temperature environment due to the first flexible support sheet 110 woven with metal wire, reducing material fatigue and damage caused by temperature changes. The main shielding layer 501 is arranged on the first flexible support sheet 110 to better use the cold shrinkage in a low-temperature environment. A rib plate group 200 is also provided to provide additional support and strength for the first flexible support sheet 110. It, together with the first flexible support sheet 110 and the support portion 300, constitutes a stable structural system that can effectively resist external loads and internal pressures, provide additional support for the first flexible support sheet 110, and can effectively prevent local instability in the angle area, thereby ensuring the integrity of the entire storage container structure. The above structure enables the angle area to meet the deformation capacity during cold shrinkage, while also meeting the stability requirements.

[0094] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A corner structure of a low-temperature storage container, characterized in that: include: Main shield; A corner component located below the main shielding layer, the corner component comprising a first flexible support sheet, a rib plate group and a support portion, the main shielding layer covers the first flexible support sheet, the rib plate group is located on a side of the first flexible support sheet away from the main shielding layer, and the support portion is located between the first flexible support sheet and the rib plate group so that a cavity is formed between the first flexible support sheet and the rib plate group; The first flexible supporting sheet is made of metal wire through a weaving process.

2. The angled structure according to claim 1, characterized in that: The first flexible support sheet has a protruding structure at a corner position corresponding to the corner assembly, and the protruding structure protrudes in a direction away from the rib plate group.

3. The angled structure according to claim 1, characterized in that: It also includes a second flexible support sheet, which is arranged on a side of the rib plate group facing the first flexible support sheet or on a side of the rib plate group facing away from the first flexible support sheet. The second flexible support sheet is parallel to the first flexible support sheet, and the second flexible support sheet is made of metal wire through a weaving process.

4. The angled structure according to claim 3, characterized in that: Also includes a secondary shielding layer; The rib plate group has a first surface facing the first flexible support sheet and a second surface facing away from the first flexible support sheet, and the second flexible support sheet is arranged on the first surface or the second surface; When the second flexible supporting sheet is disposed on the first surface, the secondary shielding layer covers the surface of the second flexible supporting sheet that is away from the first surface; When the second flexible supporting sheet is disposed on the second surface, the secondary shielding layer covers the surface of the second flexible supporting sheet that is away from the second surface.

5. The angled structure according to claim 4, characterized in that: A first adhesive layer is also provided, and when the second flexible supporting sheet is provided on the first surface, the first adhesive layer is located between the first flexible supporting sheet and the second flexible supporting sheet; When the second flexible supporting sheet is disposed on the second surface, the first adhesive layer is located between the first flexible supporting sheet and the rib plate group.

6. The angled structure according to claim 5, characterized in that: Also includes a second heat insulating layer, a second adhesive layer and a connecting assembly, wherein the second adhesive layer is between the secondary shielding layer and the second heat insulating layer; When the secondary shielding layer covers the surface of the second flexible supporting sheet facing away from the first surface, the second surface of the rib plate group is in contact and connected with the second adhesive layer, wherein the connecting component fixes the rib plate group and the second adhesive layer and the second insulation layer.

7. The angled structure according to claim 6, characterized in that: A mounting groove is provided in the second adhesive layer for accommodating the rib plate group in the mounting groove.

8. The angled structure according to claim 6, characterized in that: The second insulation layer is installed on the inner wall of the storage tank; the thickness of the second adhesive layer is greater than the thickness of the first adhesive layer; the thickness of the second insulation layer is greater than the thickness of the cavity, and the thickness of the cavity is equal to the height of the support part.

9. The angled structure according to claim 1, characterized in that: The support portion is in the shape of a strip and has a length extension direction and a width extension direction. The length extension direction of the support portion is parallel to the fold line formed by the corner; the width extension direction of the support portion is perpendicular to the fold line formed by the corner.

10. The angled structure according to claim 9, characterized in that: The support portion extends to the root of the corner in the width extension direction; the support portion is connected to the first flexible support sheet and the rib plate group by welding or screwing.

11. A method for installing a corner structure of a low-temperature storage container, characterized in that: include: Provides primary shielding; Assembling the first flexible support sheet, the rib plate group and the support portion to form a corner assembly; The main shielding layer is covered on the upper surface of the corner component, wherein the main shielding layer is covered on the first flexible support sheet, the rib plate group is located on the side of the first flexible support sheet facing away from the main shielding layer, the support portion is located between the first flexible support sheet and the rib plate group, and a cavity is provided between the first flexible support sheet and the rib plate group; the first flexible support sheet is made of metal wire through a weaving process.

12. The installation method according to claim 11, characterized in that: Prior to installing the corner assembly and the main shielding layer, it also includes: A resin glue layer, a second heat insulating layer and a second adhesive layer are laid in sequence on the cement inner wall of the storage container.

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