Liquid tank corner heat insulation system and installation method

Abstract

The invention belongs to the technical field of ship design, and provides a liquid tank corner heat insulation system and a mounting method.The system comprises a plurality of prefabricated heat insulation plates and a plurality of fixing assemblys.Each prefabricated heat insulation plate comprises a first prefabricated plate, a second prefabricated plate and a third prefabricated plate, the second prefabricated plate is laid in a corner area at the intersection of two adjacent outer surfaces of the liquid tank, the third prefabricated plate is laid in a corner area at the intersection of the adjacent corner areas, and the inner surface, close to one side of the liquid tank, of the third prefabricated plate is a curved surface with a concave center. According to the heat insulation system, the third prefabricated plate is matched with the first prefabricated plate and the second prefabricated plate, the sealing performance and the heat insulation capacity of the heat insulation system in the corner area of the liquid tank can be effectively improved, various deformation of the liquid tank in the working state is adapted, and the heat insulation effect and the working stability of the heat insulation system are improved; the prefabricated heat insulation plates are installed through the fixing assemblies, and the machining and installing difficulty of the heat insulation system is lowered.

Description

Technical Field

[0001] This application relates to the technical field of ship design, and in particular to a liquid tank corner thermal insulation system and an installation method thereof. Background Art

[0002] The liquid-tight shell for loading cryogenic liquid cargo on a liquefied gas ship is usually referred to as a liquid tank. The liquid tank can be divided into a thin-film type liquid tank and an independent type liquid tank. The independent type liquid tank includes type A, type B, and type C. Among them, the type B independent liquid tank has the advantages of a large liquid cargo carrying space, no limit on the liquid cargo loading volume, a small daily evaporation rate of the liquid cargo, convenient installation, and easy maintenance, and has been widely used in liquefied gas ships for transporting natural gas, liquefied ethane / ethylene, etc. According to the design specifications of the independent liquid tank, in order to limit the heat flow entering the liquid tank to a level that the pressure and temperature control system can maintain, it is necessary to set an insulating layer on the surface of the liquid tank to control the temperature, pressure, and evaporation rate of the cryogenic liquid cargo in the liquid tank at the design level.

[0003] At present, due to the relatively complex structure of the independent type B liquid tank and the large deformation under the working state, the form of spraying to form an insulating layer is not applicable to the independent type B liquid tank. The plate-type thermal insulation system has relatively large strength in theory. Therefore, the thermal insulation system of the type B independent liquid tank usually adopts a plate-type thermal insulation system, that is, insulating plates are installed on the outer surface of the independent type B liquid tank to form a thermal insulation system for the liquid tank. However, due to the high structural complexity of the type B independent liquid tank, especially in multiple corner regions on the outer surface of the type B independent liquid tank, it is difficult to meet the thermal insulation requirements of the type B independent liquid tank using the existing thermal insulation system, which brings potential safety hazards to the transportation of cryogenic liquid cargo. Summary of the Invention

[0004] The purpose of this application is to provide a liquid tank corner thermal insulation system, which is used to solve problems such as the existing thermal insulation system being unable to meet the thermal insulation requirements of the liquid tank, and can effectively improve the thermal insulation ability of the system and adapt to various deformations of the liquid tank under the working state.

[0005] To achieve the above and other related purposes, this application provides a liquid tank corner thermal insulation system, including a number of prefabricated thermal insulation plates and a number of fixing components;

[0006] The prefabricated thermal insulation plates include a first prefabricated plate, a second prefabricated plate, and a third prefabricated plate. The first prefabricated plate is laid on the outer surface of the liquid tank, the second prefabricated plate is laid on the corner area where two adjacent outer surfaces of the liquid tank intersect, and the third prefabricated plate is laid on the corner area where adjacent corner areas intersect. Among them, the inner surface of the third prefabricated plate close to the liquid tank is a curved surface with a central depression;

[0007] The fixing components are used to connect the prefabricated thermal insulation plates to the outer surface of the liquid tank.

[0008] Optionally, the inner surface of the third prefabricated panel is an arc-shaped curved surface sunken in the center, and the outer surface of the third prefabricated panel is an arc-shaped curved surface protruding in the center, so that the third prefabricated panel has an equal-thickness plate-like structure.

[0009] Optionally, the inner surface of the third prefabricated panel is a composite curved surface sunken in the center, and the outer surface of the third prefabricated panel is a composite curved surface protruding in the center, so that the third prefabricated panel has an equal-thickness plate-like structure, wherein the composite curved surface is a curved surface formed by splicing a plurality of non-parallel planes.

[0010] Optionally, the prefabricated insulation panel includes an inner insulation layer, an outer insulation layer and a reinforcing layer;

[0011] The inner insulation layer is disposed on the outer surface of the liquid tank, and a convex structure is disposed on the inner surface of the inner insulation layer close to the liquid tank, and a through leakage space is formed between the convex structure and the liquid tank, and an inner cladding layer is further disposed between the inner insulation layers of adjacent prefabricated insulation panels;

[0012] The outer insulation layer is located on the surface of the inner insulation layer, and the size of the outer insulation layer is smaller than that of the inner insulation layer, so that a stepped structure is formed on the side surface of the prefabricated insulation panel;

[0013] The reinforcing layer is located between the inner insulation layer and the outer insulation layer, and a first protective layer is disposed on the surface of the outer insulation layer away from the inner insulation layer.

[0014] Optionally, the third prefabricated panel has a first side surface, a second side surface and a third side surface connecting its inner surface and outer surface, and the first side surface, the second side surface and the third side surface are connected to each other in pairs and are all perpendicular to the outer surface of the liquid tank.

[0015] Optionally, a limiting groove is provided at one end where the first side surface and the second side surface of the third prefabricated panel intersect, and the limiting groove penetrates through the inner insulation layer of the third prefabricated panel in a direction perpendicular to the outer surface of the liquid tank.

[0016] Optionally, the fixing assembly is located in the joint between adjacent prefabricated insulation panels, and the fixing assembly includes:

[0017] A U-shaped fixing member, located in the joint between adjacent inner insulation layers, the top of the U-shaped fixing member has two folded edges, the folded edges are located on the step surfaces of the stepped structure on the side surface of the prefabricated insulation panel, and an insulating plug block is disposed in the U-shaped space of the U-shaped fixing member;

[0018] A reinforcing structure, located on the folded edges of the U-shaped fixing member and respectively connected to the two folded edges;

[0019] The fixed connection part includes a fixed column, a connecting rod, and a fastening bolt. The fixed column is connected to the liquid tank. The connecting rod is located between the fixed column and the U-shaped fixing member and is connected to the fixed column. The fastening bolt is used to connect the connecting rod to the U-shaped fixing member.

[0020] Optionally, the liquid tank corner insulation system further includes:

[0021] A joint insulation board located in the joint between adjacent prefabricated insulation boards;

[0022] A second protective layer laid on the joint insulation board and extending to the outer surface of the prefabricated insulation board.

[0023] This application also provides an installation method for a liquid tank corner insulation system for installing any of the liquid tank corner insulation systems in the foregoing embodiments, including the following steps:

[0024] Obtain prefabricated insulation boards and fixing components, where the prefabricated insulation boards include a first prefabricated board, a second prefabricated board, and a third prefabricated board;

[0025] Perform grid division and preset installation position positioning on the outer surface of the liquid tank;

[0026] Connect the fixed column in the fixed component to the preset installation position;

[0027] According to the preset installation position, use the fixed component to sequentially install the third prefabricated board, the second prefabricated board, and the first prefabricated board on the outer surface of the liquid tank to complete the installation of the prefabricated insulation board.

[0028] Optionally, the step of connecting the fixed column in the fixed component to the preset installation position includes:

[0029] Grind and clean the preset installation position, where the grinding diameter is 20 mm to 300 mm;

[0030] Weld the fixed column to the preset installation position, and make the coaxiality tolerance between the actual installation position of the fixed column and the preset installation position not exceed 3 mm, and the angle between the fixed column and the outer surface of the liquid tank is 87° to 93°.

[0031] Optionally, the liquid tank corner insulation system further includes a joint insulation board, a first protective layer, and a second protective layer; after completing the installation of the prefabricated insulation board, the following steps are further included:

[0032] Lay the first protective layer on the outer surface of the prefabricated insulation board;

[0033] Install the joint insulation board into the joint between adjacent prefabricated insulation boards;

[0034] Lay the second protective layer on the outer surface of the joint insulation board, and extend the second protective layer onto the outer surfaces of adjacent prefabricated insulation boards;

[0035] Wherein, the thickness of the first protective layer is 0.5 mm to 1.5 mm, the thickness of the second protective layer is 0.5 mm to 1.5 mm, and the overlapping width of the second protective layer and the outer surface of the adjacent prefabricated insulation board is not less than 25 mm.

[0036] As described above, compared with the prior art, the liquid tank corner insulation system and the installation method provided by this application have at least the following beneficial effects:

[0037] In the liquid tank corner insulation system provided by this application, through the cooperation of the first prefabricated board to the third prefabricated board, the sealing performance and insulation ability of the insulation system in the corner area of the outer surface of the liquid tank can be effectively improved, and the liquid tank corner insulation system can adapt to various deformations of the liquid tank under the working state, improving the insulation effect and working stability of the system; through the fixing components, the installation of various prefabricated insulation boards can be realized, especially in the corner area of the outer surface of the liquid tank with a complex structure, effectively simplifying the installation process, improving the design efficiency of the insulation system, and reducing the processing and installation difficulty of the insulation system. The liquid tank corner insulation system of this application has the advantages of reliable structure and high integration, can provide good insulation function in a low-temperature environment, and effectively improves the insulation effect and working reliability of the system. The installation method of this application is used to install the above liquid tank corner insulation system, so it also has the above beneficial effects. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0039] Figure 1 and Figure 2 respectively show the structural schematic diagrams of the liquid tank corner insulation system provided by Embodiment 1 of this application at different positions of the liquid tank.

[0040] Figures 3 to 5 respectively show the structural schematic diagrams of three different splicing methods of the prefabricated insulation boards in the corner area of the outer surface of the liquid tank provided by Embodiment 1 of this application.

[0041] Figure 6 and Figure 7Are respectively shown as schematic structural diagrams of two different first precast slabs provided in Embodiment 1 of the present application.

[0042] Figure 8 Is shown as a schematic structural diagram of the joint of adjacent prefabricated insulation slabs provided in Embodiment 1 of the present application.

[0043] Figure 9 And Figure 10 Are respectively shown as schematic diagrams of two different convex structures provided in Embodiment 1 of the present application.

[0044] Figure 11 Is shown as a schematic structural diagram of a second precast slab provided in Embodiment 1 of the present application.

[0045] Figures 12 to 14 Are respectively shown as schematic structural diagrams of three different third precast slabs provided in Embodiment 1 of the present application.

[0046] Figure 15 Is shown as a schematic structural diagram of a fixing component provided in Embodiment 1 of the present application.

[0047] Figure 16 Is shown as a schematic structural diagram of a U-shaped fixing part in a fixing component provided in Embodiment 1 of the present application.

[0048] Figure 17 Is shown as a schematic flow diagram of an installation method of a liquid tank corner insulation system provided in Embodiment 2 of the present application.

[0049] Schematic illustration of reference numerals:

[0050] 11, prefabricated insulation slab; 101, first precast slab; 102, second precast slab; 103, third precast slab; 1031, first side; 1032, second side; 1033, third side; 111, inner insulation layer; 1111, limiting groove; 1112, convex structure; 112, outer insulation layer; 113, reinforcing layer; 114, inner cladding; 115, first protective layer; 12, fixing component; 121, U-shaped fixing part; 1211, folded edge; 1212, insulating plug block; 122, reinforcing structure; 123, fixed connection part; 1231, fixed column; 1232, fastening bolt; 1233, connecting rod; 141, joint insulation slab; 142, second protective layer; 20, liquid tank. Detailed implementation manners

[0051] To make the technical objectives, technical solutions and technical effects of the present application clearer, the technical solutions in the present application will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Usually, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0052] Accordingly, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0053] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application.

[0054] In the description of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection or a detachable connection. In addition, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0055] Embodiment 1

[0056] This embodiment provides a liquid tank corner insulation system, which is installed in the corner area on the outer surface of the liquid tank 20 with reference to Figure 1 and Figure 2 . The corner area is the area where several adjacent edges on the outer surface of the liquid tank 20 intersect. The liquid tank 20 may be, for example, a Type B independent liquid tank 20.

[0057] The liquid tank corner insulation system of this embodiment includes several prefabricated insulation boards 11 and several fixing components 12. The several prefabricated insulation boards 11 are spliced in the corner area on the outer surface of the liquid tank 20 to form the liquid tank corner insulation system, and the fixing components 12 are used to connect the prefabricated insulation boards 11 to the outer surface of the liquid tank 20.

[0058] With reference to Figure 1 and Figure 2, the prefabricated insulation panel 11 includes a first prefabricated panel 101, a second prefabricated panel 102, and a third prefabricated panel 103. The first prefabricated panel 101 is laid on the outer surface of the liquid tank 20. Optionally, the first prefabricated panel is arranged in the planar area of the outer surface of the liquid tank 20. The second prefabricated panel 102 is laid in the corner area where two adjacent outer surfaces of the liquid tank 20 intersect. Among them, the corner area is the edge area where two adjacent outer surfaces of the liquid tank 20 intersect. The third prefabricated panel 103 is laid in the corner area where adjacent corner areas intersect. Among them, the corner area is the area where at least three non-coplanar surfaces of the outer surface of the liquid tank 20 intersect.

[0059] Referring to Figures 3 to 5 , in this embodiment, the third prefabricated panel 103 has an inner surface on the side close to the liquid tank 20 and an outer surface on the side far from the liquid tank 20. The inner surface of the third prefabricated panel 103 is a curved surface with a central depression. Among them, the central depression of the inner surface of the third prefabricated panel 103 means that it is recessed outward from the edge of the inner surface of the third prefabricated panel 103 towards the center in the direction away from the liquid tank 20, so as to facilitate the third prefabricated panel 103 to fit the corner area of the outer surface of the liquid tank 20.

[0060] When the liquid tank 20 is filled with cryogenic liquid cargo, by using the liquid tank corner insulation system of this embodiment, a good heat insulation function for the corner area of the liquid tank 20 can be realized, and the heat transfer between the external environment and the liquid tank 20 can be reduced; in the liquid tank corner insulation system, through the combined use of the first prefabricated panel 101, the second prefabricated panel 102, and the third prefabricated panel 103, the sealing performance and heat insulation ability of the insulation system in the corner area of the liquid tank 20 can be effectively improved, and the liquid tank corner insulation system can adapt to various deformations of the liquid tank 20 in the working state, improving the working stability and reliability of the insulation system; through the fixing component 12, the installation of each prefabricated panel can be realized, especially in the complex corner area of the liquid tank 20, effectively simplifying the installation process and improving the design efficiency of the insulation system, and reducing the processing and installation difficulty of the insulation system. It can be seen that the liquid tank corner insulation system of this embodiment has the advantages of reliable structure, high integration, etc., can provide good heat insulation function in a low-temperature environment, and effectively improves the heat insulation effect of the system as well as the stability and reliability of the system.

[0061] In this embodiment, referring to Figure 6 and Figure 7 , the prefabricated insulation panel 11 can be a multi-layer structure, including an inner insulation layer 111, an outer insulation layer 112, and a reinforcing layer 113. Among them, the first prefabricated panel 101, the second prefabricated panel 102, and the third prefabricated panel 103 can all adopt the above multi-layer structure.

[0062] The inner heat-insulating layer 111 is disposed on the outer surface of the liquid tank 20, and the outer heat-insulating layer 112 is located on the surface of the inner heat-insulating layer 111. Moreover, the size of the outer heat-insulating layer 112 is smaller than that of the inner heat-insulating layer 111, that is, the projection of the outer heat-insulating layer 112 on the outer surface of the inner heat-insulating layer 111 is located within the outer surface of the inner heat-insulating layer 111, so as to form a stepped structure on the side surface of the prefabricated heat-insulating board 11. The reinforcing layer 113 is located between the inner heat-insulating layer 111 and the outer heat-insulating layer 112. Optionally, the reinforcing layer 113 extends to the outside of the outer heat-insulating layer 112, that is, the projection of the outer heat-insulating layer 112 on the surface of the reinforcing layer 113 is located within the surface of the outer heat-insulating layer 112. Further, the reinforcing layer 113 completely covers the outer surface of the inner heat-insulating layer 111.

[0063] The constituent materials of the inner heat-insulating layer 111 and the outer heat-insulating layer 112 both include heat-insulating materials. Optionally, the heat-insulating materials constituting the inner heat-insulating layer 111 and the outer heat-insulating layer 112 include but are not limited to one or more of polyurethane foam, polystyrene foam, polyethylene, phenolic foam, aerogel, etc. To improve the heat-insulating ability, mechanical strength, flame-retardant ability, etc. of the heat-insulating layer and the outer heat-insulating layer 112, the constituent materials of the inner heat-insulating layer 111 and the outer heat-insulating layer 112 may also include reinforcing materials. Optionally, the reinforcing materials constituting the inner heat-insulating layer 111 and the outer heat-insulating layer 112 include but are not limited to one or more of glass fiber, hollow glass microspheres, and other suitable materials. The constituent material of the reinforcing layer 113 is a grid material. Optionally, the grid material constituting the reinforcing layer 113 may be, for example, one or more of fiberglass aluminum foil grid cloth, carbon fiber grid cloth, metal mesh, or other suitable grid materials.

[0064] In an alternative embodiment, the inner heat-insulating layer 111, the outer heat-insulating layer 112, and the reinforcing layer 113 are fixedly connected. For example, they can be fixedly connected by bonding or other suitable means so that the inner heat-insulating layer 111, the outer heat-insulating layer 112, and the reinforcing layer 113 are fixedly connected. Further, the inner heat-insulating layer 111, the outer heat-insulating layer 112, and the reinforcing layer 113 are bonded by a low-temperature adhesive. The low-temperature adhesive may be, for example, polyurethane glue, butyl glue, resin glue, or other suitable adhesives.

[0065] The inner heat-insulating layer 111 and the outer heat-insulating layer 112 of the prefabricated heat-insulating board 11 form a two-stage heat-insulating structure, which can improve the heat-insulating effect and service life of the liquid tank corner heat-insulating system. When the inner heat-insulating layer 111 undergoes large deformation and cracks, since the inner heat-insulating layer 111 and the outer heat-insulating layer 112 are spaced apart by the reinforcing layer 113, the stress transfer between the inner heat-insulating layer 111 and the outer heat-insulating layer 112 can be reduced, the risk of the outer heat-insulating layer 112 cracking simultaneously can be minimized, and the heat-insulating effect of the system can be continuously maintained by means of the outer heat-insulating layer 112, thereby improving the reliability of the liquid tank corner heat-insulating system.

[0066] In this embodiment, with reference toFigure 8 , an inner cladding layer 114 is further provided between the inner insulation layers 111 of adjacent prefabricated insulation panels 11. The inner cladding layer 114 fills the pores between adjacent inner insulation layers 111, providing a buffer space for the deformation between adjacent inner insulation layers 111, capable of alleviating the deformation caused by thermal expansion and contraction of the liquid tank 20, and reducing the cracking risk caused by thermal expansion and contraction.

[0067] In an alternative embodiment, the inner cladding layer 114 can be prefabricated and laid on the side surface of the inner insulation layer 111 by means of adhesion or other suitable means; or an appropriate elastic insulation material can be filled in the joint between adjacent inner insulation layers 111 to form the inner cladding layer 114; or the inner cladding layer 114 can be formed in other suitable forms. Preferably, filling an elastic insulation material in the joint between adjacent inner insulation layers 111 to form the inner cladding layer 114 of this embodiment helps to improve the insulation ability of the system.

[0068] The constituent material of the inner cladding layer 114 includes one or more elastic polymer foam materials. The materials constituting the inner cladding layer 114 can include, for example, polyurethane foam, melamine foam, ethylene-vinyl acetate copolymer foam, polyethylene foam, polypropylene foam, polyimide foam, or one or more of other suitable elastic polymer foam materials.

[0069] In an alternative embodiment, a convex structure 1112 is provided on the inner surface of the inner insulation layer 111 close to the liquid tank 20. A through leakage space is formed between the convex structure 1112 and the liquid tank 20. The leakage space serves as a leakage channel, enabling the cryogenic liquid cargo leaked after the failure of the liquid tank 20 to be collected at a preset position along this channel, for example, collected at the bottom of the liquid tank 20, and the leaked cryogenic liquid cargo is led out by setting a lead-out port. Refer to Figure 9 and Figure 10 , the shape of the convex structure 1112 can be a polygonal structure, or a hemispherical, semi-elliptical or other suitable structure.

[0070] In this embodiment, refer to Figure 8 , the corner system of the liquid tank 20 further includes a first protective layer 115. The first protective layer 115 is provided on the surface of the outer insulation layer 112 away from the inner insulation layer 111, and is used to provide good protection for the prefabricated insulation panel 11. The material of the first protective layer 115 can be thermoplastic polyolefin elastomer, or the first protective layer 115 can also be made of other suitable materials. Optionally, the constituent material of the first protective layer 115 can be, for example, one or more of polyolefin resin materials such as polypropylene and polyethylene or other suitable materials.

[0071] In this embodiment, refer to Figure 6 and Figure 7, the first prefabricated panel 101 is laid on the planar area of the outer surface of the liquid tank 20. The first prefabricated panel 101 is a polygonal plate-like structure, and the first prefabricated panel 101 can be a triangular plate-like structure, a rectangular plate-like structure, a square plate-like structure or other suitable structures to cooperate with the second prefabricated panel 102 and the third prefabricated panel 103 to complete the coverage of the planar area of the outer surface of the liquid tank 20.

[0072] Refer to Figure 11 , the second prefabricated panel 102 is an arc-bent plate-like structure or a straight-line bent plate-like structure to facilitate the second prefabricated panel 102 to fit on the corner area of the outer surface of the liquid tank 20. Optionally, the second prefabricated panel 102 can be, for example, a tile-like structure, and the side surface of the second prefabricated panel 102 forms a stepped structure through the inner heat insulation layer 111 and the outer heat insulation layer 112.

[0073] Refer to Figures 12 to 14 , the surface of the third prefabricated panel 103 close to the liquid tank 20 is a curved surface with a central depression so that the third prefabricated panel 103 fits on the corner area of the outer surface of the liquid tank 20. Optionally, the surface of the third prefabricated panel 103 close to the liquid tank 20 can be an arc-shaped curved surface or a composite curved surface formed by splicing a plurality of non-coplanar planes.

[0074] In an alternative embodiment, the inner surface of the third prefabricated panel 103 can be an arc-shaped curved surface with a central depression, and the outer surface of the third prefabricated panel 103 is an arc-shaped curved surface with a central protrusion, so that the third prefabricated panel 103 is a plate-like structure with uniform thickness and enables the third prefabricated panel 103 to fit on the corner area of the outer surface of the liquid tank 20, improving the heat insulation ability of the system in the corner area. Herein, the central protrusion of the outer surface of the third prefabricated panel 103 can be understood as that the outer surface of the third prefabricated panel 103 protrudes outward in a direction away from the liquid tank 20 from its edge to the center.

[0075] In an alternative embodiment, the inner surface of the third prefabricated panel 103 can also be a composite curved surface with a central depression, and the outer surface of the third prefabricated panel 103 is a composite curved surface with a central protrusion, so that the third prefabricated panel 103 is a plate-like structure with uniform thickness and enables the third prefabricated panel 103 to fit on the corner area of the outer surface of the liquid tank 20, improving the heat insulation ability of the system in the corner area. Herein, the composite curved surface is a curved surface formed by splicing a plurality of non-parallel planes.

[0076] In an alternative embodiment, the third prefabricated panel 103 has a first side surface 1031, a second side surface 1032, and a third side surface 1033 connecting its inner surface and outer surface. The first side surface 1031, the second side surface 1032, and the third side surface 1033 are joined pairwise and are all perpendicular to the outer surface of the liquid tank 20, so that the shape and structure of the third prefabricated panel 103 can better cooperate with the first prefabricated panel 101 and the second prefabricated panel 102, improving the coverage effect on the corner area of the liquid tank 20, and thus enhancing the heat insulation effect and installation efficiency of the system.

[0077] Further, the third prefabricated panel 103 is symmetric about its central plane, which is perpendicular to the third side surface 1033. The inner surface and the outer surface of the third prefabricated panel 103 can be, for example, arc-shaped curved surfaces.

[0078] Further, the third prefabricated panel 103 is symmetric about its central plane, which is perpendicular to the third side surface 1033. The inner surface and the outer surface of the third prefabricated panel 103 can be, for example, curved surfaces formed by splicing seven or other appropriate numbers of non-parallel surfaces.

[0079] Further, with reference to Figure 12 and Figure 14 , a limiting groove 1111 is provided at one end where the first side surface 1031 and the second side surface 1032 of the third prefabricated panel 103 intersect. The limiting groove 1111 penetrates the inner heat insulation layer 111 of the third prefabricated panel 103 in a direction perpendicular to the outer surface of the liquid tank 20. The limiting groove 1111 is a position for the fixing component 12, which can facilitate the subsequent installation of the third prefabricated panel 103 on the outer surface of the liquid tank 20. Among them, the direction perpendicular to the outer surface of the liquid tank 20 can be understood as the direction perpendicular to the outer surface at the connection with the liquid tank 20.

[0080] In this embodiment, with reference to Figure 8 , the fixing component 12 is located in the joint between adjacent prefabricated heat insulation panels 11. The fixing component 12 includes a U-shaped fixing member 121, a reinforcing structure 122, and a fixed connection portion 123. The U-shaped fixing member 121 is located in the joint between adjacent inner heat insulation layers 111. With reference to Figure 15 and Figure 16 , the top of the U-shaped fixing member 121 has two folded edges 1211, and the two folded edges 1211 are located on the step surfaces of the side step structures of the prefabricated heat insulation panel 1%. The reinforcing structure 122 is located on the folded edges 1211 of the U-shaped fixing member 121 and is respectively connected to the two folded edges 1211 for the structural stability of the U-shaped fixing member 121.

[0081] In an alternative embodiment, the reinforcing structure 122 is a plate-like structure, including two reinforcing plates. The two reinforcing plates are respectively fixedly connected to the two folded edges 1211 and are spaced apart at opposite ends along the extending direction of the folded edges 1211.

[0082] Reference Figure 15 Figure 15 , the fixed connection part 123 includes a fixed column 1231, a connecting rod 1233 and a fastening bolt 1232. The fixed column 1231 is connected to the liquid tank 20. The connecting rod 1233 is located between the fixed column 1231 and the U-shaped fixing member 121 and is connected to the fixed column 1231. The fastening bolt 1232 is used to connect the connecting rod 1233 to the U-shaped fixing member 121 so that the fixed connection part 123 is connected to the U-shaped fixing member 121, and then the prefabricated insulation board 11 is fixed on the surface of the liquid tank 20. The inner cladding 114 is filled in the seams between adjacent inner insulation layers 111, so as to keep the insulation system having a good insulation effect.

[0083] In an alternative embodiment, the fixed column 1231 is fixedly connected to the liquid tank 20. The fixed column 1231 can be fixed on the outer surface of the liquid tank 20 by welding or other suitable means. Threaded holes are provided at both the upper and lower ends of the connecting rod 1233. The fixed column 1231 is a stud. The fastening bolt 1232 includes a nut and a stud. The nut of the fastening bolt 1232 is located at the bottom of the U-shaped space of the U-shaped fixing member 121. The stud passes through the U-shaped fixing member 121. The connecting rod 1233 is fixedly connected to the fixed column 1231 and the fastening bolt 1232 respectively through the threaded holes.

[0084] Further, the fixed connection part 123 may further include a gasket. The gasket is disposed between the nut of the fastening bolt 1232 and the U-shaped fixing member 121. The nut of the fastening bolt 1232 presses the U-shaped fixing member 121 through the gasket.

[0085] Further, the fixed connection part 123 may further include a strengthening adhesive layer. The strengthening adhesive layer is located in the threaded holes of the connecting rod 1233, between the connecting rod 1233 and the fixed column 1231, and between the connecting rod 1233 and the fastening bolt 1232, and is used to strengthen the connection between the connecting rod 1233 and the fixed column 1231 and the fastening bolt 1232. The strengthening adhesive layer may be, for example, a low-temperature glue layer. The low-temperature glue is added to the threaded holes of the connecting rod 1233 to form the strengthening adhesive layer.

[0086] Further, the connecting rod 1233 can be made of a material with a relatively low thermal conductivity, such as one or more of plastic, wood, composite material and other suitable materials, which can reduce the heat transfer between the liquid tank 20 and the fixing assembly 12 and improve the insulation effect of the insulation system.

[0087] In an alternative embodiment, reference Figure 8, an adiabatic plug 1212 is arranged in the U-shaped space of the U-shaped fixing part 121, which is used to limit the deformation of the U-shaped fixing part 121 towards the center when stressed. At the same time, the adiabatic plug 1212 is also used to fill the gap in the U-shaped fixing part 121, which helps to keep the adiabatic system having a good adiabatic effect and prevent the generation of local cold spots.

[0088] In this embodiment, the liquid tank corner adiabatic system further includes a joint adiabatic board 141, and the joint adiabatic board 141 is located in the joint between adjacent prefabricated adiabatic boards 11. Specifically, the joint adiabatic board 141 is located in the joint between two adjacent outer adiabatic layers 112, and the joint adiabatic board 141 is arranged in the joints between the first prefabricated board 101, the second prefabricated board 102 and the third prefabricated board 103, which is used to fill the gap between adjacent outer adiabatic layers 112, achieve a sealing effect, ensure that the liquid tank corner adiabatic system has a good adiabatic effect, and at the same time provide a buffer space for the deformation between the outer adiabatic boards, reducing the risk of cracking of the outer adiabatic boards. The composition material of the joint adiabatic board 141 can be one or more elastic polymer foam materials. Specifically, the composition material of the joint adiabatic board 141 can be, for example, one or more of polyurethane foam, melamine foam, ethylene-vinyl acetate copolymer foam, polyethylene foam, polypropylene foam, polyimide foam or other suitable elastic polymer foam materials.

[0089] In an alternative embodiment, the joint adiabatic board 141 is fixedly connected to the adjacent prefabricated adiabatic board 11, the fixing component 12 and the adiabatic filling block 1212 respectively, for example, it can be fixedly connected by an adhesive bonding method or other suitable methods. Optionally, the joint adiabatic board 141 is fixedly connected to the adjacent prefabricated adiabatic board 11, the fixing component 12 and the adiabatic filling block 1212 respectively through a low-temperature adhesive.

[0090] In this embodiment, the liquid tank corner adiabatic system further includes a second protective layer 142, and the second protective layer 142 is laid on the outer surface of the joint adiabatic board 141 and extends to the outer surface of the adjacent prefabricated adiabatic board 11. The material of the second protective layer 142 can be thermoplastic polyolefin elastomer, or it can also be made of other suitable materials. Specifically, the composition material of the second protective layer 142 can be, for example, one or more of polyolefin resin materials such as polypropylene and polyethylene or other suitable materials. The second protective layer 142 has a preset strength and thickness, and covers the joint adiabatic board 141 and a part of the outer surface of the adjacent prefabricated adiabatic board 11, and can provide good mechanical protection and anti-aging protection.

[0091] Embodiment Two

[0092] This embodiment provides an installation method for a liquid tank corner insulation system, which is used to install any liquid tank corner insulation system in the first embodiment. By using the installation method of this embodiment, the liquid tank corner insulation system can be installed in the corner area of the outer surface of the liquid tank 20 to achieve the insulation effect of the corner area of the liquid tank 20.

[0093] Referring to Figure 17 , the installation method of this embodiment includes steps S1 to S4, specifically including:

[0094] S1. Obtain the prefabricated insulation board 11 and the fixing component 12, wherein the prefabricated insulation board 11 includes a first prefabricated board 101, a second prefabricated board 102, and a third prefabricated board 103;

[0095] S2. Perform grid division and positioning of the preset installation positions on the outer surface of the liquid tank 20;

[0096] S3. Connect the fixing column 1231 in the fixing component 12 to the preset installation position;

[0097] S4. According to the preset installation positions, use the fixing component 12 to sequentially install the third prefabricated board 103, the second prefabricated board 102, and the first prefabricated board 101 on the outer surface of the liquid tank 20 to complete the installation of the prefabricated insulation board 11.

[0098] In step S1, the fixing component 12 includes a U-shaped fixing member 121, a reinforcing structure 122, and a fixing connection part 123. The fixing connection part 123 includes a fixing column 1231, a connecting rod 1233, and a fastening bolt 1232. According to the design requirements, the production and processing of the fixing component 12, the first prefabricated board 101, the second prefabricated board 102, and the third prefabricated board 103 are completed to obtain the prefabricated insulation board 11 and the fixing component 12.

[0099] In step S2, according to the design requirements, the grid division of the outer surface of the liquid tank 20 is completed to determine the installation area of each prefabricated insulation board 11, and based on the results of the grid division, the preset installation positions are positioned, where the preset installation positions are the installation positions of the fixing columns 1231 in the fixing component 12 on the outer surface of the liquid tank 20.

[0100] In step S3, the fixing column 1231 can be connected to the preset installation position on the liquid tank 20 by welding or other suitable methods. Optionally, performing step S3 may include the following steps: grinding and cleaning the preset installation position; welding the fixing column 1231 to the preset installation position, and making the coaxiality tolerance between the actual installation position of the fixing column 1231 and the preset installation position not exceed 3 mm, and the angle between the fixing column 1231 and the outer surface of the liquid tank 20 is 87° - 93°. Further, in the step of grinding and cleaning the preset installation position, the grinding diameter is 20 mm - 30 mm.

[0101] In step S4, the third prefabricated board 103, the second prefabricated board 102, and the first prefabricated board 101 are installed in sequence, and the third prefabricated board 103, the second prefabricated board 102, and the first prefabricated board 101 are fixed on the outer surface of the liquid tank 20 by the fixing component 12. Among them, by controlling the installation sequence of the first prefabricated board 101 to the third prefabricated board 103, it helps to reduce the installation difficulty, realize the rapid installation of multiple prefabricated insulation boards 11, and improve the installation efficiency and installation quality.

[0102] In this embodiment, the liquid tank corner insulation system further includes a joint insulation board 141, a first protective layer 115, and a second protective layer 142. After the installation of the prefabricated insulation board 11 is completed, the following steps are further included: laying the first protective layer 115 on the outer surface of the prefabricated insulation board 11; installing the joint insulation board 141 into the joint between adjacent prefabricated insulation boards 11; laying the second protective layer 142 on the outer surface of the joint insulation board 141 and making the second protective layer 142 extend to the outer surfaces of adjacent prefabricated insulation boards 11.

[0103] Among them, the thickness of the first protective layer 115 is 0.5 mm to 1.5 mm; specifically, the thickness of the first protective layer 115 can be, for example, 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm or other suitable values. The thickness of the second protective layer 142 is 0.5 mm to 1.5 mm; specifically, the thickness of the second protective layer 142 can be, for example, 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm or other suitable values. The overlapping width of the second protective layer 142 and the outer surface of the adjacent prefabricated insulation board 11 is not less than 25 mm, and the overlapping width can be, for example, 30 mm or other suitable values. The overlapping length of the second protective layer 142 at the two joints is not less than 200 mm, and the overlapping length can be, for example, 200 mm or other suitable values.

[0104] In an alternative embodiment, before laying the first protective layer 115 on the outer surface of the prefabricated insulation board 11, the following steps are further included: obtaining the prefabricated first protective layer 115 and second protective layer 142. Among them, both the first protective layer 115 and the second protective layer 142 can be prefabricated. After the installation of the prefabricated insulation board 11 is completed, installing the prefabricated first protective layer 115 on the outer surface of the prefabricated insulation board 11 and installing the prefabricated second protective layer 142 on the outer surface of the joint insulation board 141 can improve the overall design efficiency and installation efficiency of the system.

[0105] In an alternative embodiment, the liquid tank corner insulation system further includes an inner cladding 114 and insulation plug blocks 1212. After the installation of the prefabricated insulation board 11 is completed, the following steps are further included: installing the insulation plug blocks 1212 into the joints between adjacent inner insulation layers 111; filling the joints between adjacent inner insulation layers 111 to form the inner cladding 114.

[0106] The installation method of this embodiment is used to install any one of the liquid tank corner insulation systems in Embodiment 1 onto the outer surface of the liquid tank 20. Therefore, the installation method of this embodiment also has the beneficial effects of Embodiment 1; and based on the installation method of this embodiment, by making the first prefabricated board 101 completely cover the planar area of the outer surface of the liquid tank, the overall insulation effect of the liquid tank can also be achieved.

[0107] The above embodiments are only illustrative of the principles and effects of the present application and are not intended to limit the present application. Any person familiar with this technology can modify, change, or combine the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present application should still be covered by the claims of the present application.

Claims

1. A liquid tank corner insulation system, characterized in that, It includes a number of prefabricated heat-insulating plates and a number of fixing components; The prefabricated heat-insulating plates include a first prefabricated plate, a second prefabricated plate and a third prefabricated plate. The first prefabricated plate is laid on the outer surface of the liquid tank. The second prefabricated plate is laid in the corner area where two adjacent outer surfaces of the liquid tank intersect. The third prefabricated plate is laid in the corner area where the adjacent corner areas intersect. Among them, the inner surface of the third prefabricated plate on the side close to the liquid tank is a curved surface with a central depression; The fixing components are used to connect the prefabricated heat-insulating plates to the outer surface of the liquid tank.

2. The liquid tank corner heat insulation system according to claim 1, characterized in that, The inner surface of the third prefabricated plate is an arc-shaped curved surface with a central depression, and the outer surface of the third prefabricated plate is an arc-shaped curved surface with a central protrusion, so that the third prefabricated plate has an equal-thickness plate-like structure.

3. The liquid tank corner insulation system according to claim 1, characterized in that, The inner surface of the third prefabricated plate is a composite curved surface with a central depression, and the outer surface of the third prefabricated plate is a composite curved surface with a central protrusion, so that the third prefabricated plate has an equal-thickness plate-like structure. Among them, the composite curved surface is a curved surface formed by splicing a plurality of non-parallel planes.

4. The liquid tank corner insulation system according to claim 1, characterized in that, The prefabricated heat-insulating plates include an inner heat-insulating layer, an outer heat-insulating layer and a reinforcing layer; The inner heat-insulating layer is arranged on the outer surface of the liquid tank. A convex structure is arranged on the inner surface of the inner heat-insulating layer on the side close to the liquid tank. A through leakage space is formed between the convex structure and the liquid tank. An inner cladding layer is also arranged between the inner heat-insulating layers of adjacent prefabricated heat-insulating plates; The outer heat-insulating layer is located on the surface of the inner heat-insulating layer, and the size of the outer heat-insulating layer is smaller than that of the inner heat-insulating layer, so that a step structure is formed on the side surface of the prefabricated heat-insulating plate; The reinforcing layer is located between the inner heat-insulating layer and the outer heat-insulating layer. A first protective layer is arranged on the surface of the outer heat-insulating layer away from the inner heat-insulating layer.

5. The liquid tank corner insulation system according to claim 4, characterized in that, The third prefabricated plate has a first side surface, a second side surface and a third side surface connecting its inner surface and outer surface. The first side surface, the second side surface and the third side surface are connected to each other in pairs and are all perpendicular to the outer surface of the liquid tank.

6. The liquid tank corner insulation system according to claim 5, wherein A limiting groove is arranged at one end where the first side surface and the second side surface of the third prefabricated plate intersect. The limiting groove penetrates the inner heat-insulating layer of the third prefabricated plate along the direction perpendicular to the outer surface of the liquid tank.

7. The liquid tank corner insulation system according to claim 4, characterized in that, The fixing components are located in the joints between adjacent prefabricated heat-insulating plates. The fixing components include: A U-shaped fixing piece, located in the joint between adjacent inner heat-insulating layers. The top of the U-shaped fixing piece has two folded edges, and the folded edges are located on the step surfaces of the step structure on the side surface of the prefabricated heat-insulating plate. An adiabatic plug block is arranged in the U-shaped space of the U-shaped fixing piece; A reinforcing structure, located on the folded edges of the U-shaped fixing piece and respectively connected to the two folded edges; A fixed connection part, including a fixed column, a connecting rod and a fastening bolt. The fixed column is connected to the liquid tank. The connecting rod is located between the fixed column and the U-shaped fixing piece and is connected to the fixed column. The fastening bolt is used to connect the connecting rod to the U-shaped fixing piece.

8. The liquid tank corner insulation system according to claim 1, characterized in that, It also includes: A joint heat-insulating plate, located in the joint between adjacent prefabricated heat-insulating plates; A second protective layer is laid on the joint heat insulation board and extends to the outer surface of the prefabricated heat insulation board.

9. A method for installing a liquid tank corner insulation system for installing the liquid tank corner insulation system according to any one of claims 1 to 8, characterized in that, It includes the following steps: Obtain a prefabricated heat insulation board and a fixing component, wherein the prefabricated heat insulation board includes a first prefabricated board, a second prefabricated board and a third prefabricated board; Perform grid division and positioning of the preset installation positions on the outer surface of the liquid tank; Connect the fixing columns in the fixing component to the preset installation positions; According to the preset installation positions, use the fixing component to sequentially install the third prefabricated board, the second prefabricated board and the first prefabricated board on the outer surface of the liquid tank to complete the installation of the prefabricated heat insulation board.

10. The installation method of the liquid tank corner heat insulation system according to claim 9, characterized in that, The step of connecting the fixing columns in the fixing component to the preset installation positions includes: Grind and clean the preset installation positions, wherein the grinding diameter is 20 mm to 300 mm; Weld the fixing columns to the preset installation positions, and make the coaxiality tolerance between the actual installation position of the fixing columns and the preset installation positions not exceed 3 mm, and the included angle between the fixing columns and the outer surface of the liquid tank is 87° to 93°.

11. The liquid tank corner insulation system according to claim 9, characterized in that, The liquid tank corner heat insulation system further includes a joint heat insulation board, a first protective layer and a second protective layer; after completing the installation of the prefabricated heat insulation board, the following steps are further included: Lay the first protective layer on the outer surface of the prefabricated heat insulation board; Install the joint heat insulation board into the joint between adjacent prefabricated heat insulation boards; Lay the second protective layer on the outer surface of the joint heat insulation board and make the second protective layer extend to the outer surfaces of adjacent prefabricated heat insulation boards; Wherein, the thickness of the first protective layer is 0.5 mm to 1.5 mm, the thickness of the second protective layer is 0.5 mm to 1.5 mm, and the overlapping width of the second protective layer and the outer surfaces of adjacent prefabricated heat insulation boards is not less than 25 mm.

Images