A liquid tank edge insulation system and method of installation

Abstract

The application belongs to the technical field of ship design, and provides a liquid tank edge heat insulation system and a mounting method. The system comprises: prefabricated heat insulation plates, including first to third prefabricated plates, the first prefabricated plate is laid on the outer surface of the liquid tank, the second prefabricated plate is an arc-shaped curved or linear bent plate structure and is laid on the corner area where two adjacent outer surfaces of the liquid tank intersect, and the third prefabricated plate is arranged in the narrow area formed between the first prefabricated plate and the second prefabricated plate; a fixing assembly is used for connecting the prefabricated heat insulation plates to the outer surface of the liquid tank; and a sprayed heat insulation layer is formed in the corner reserved area at the intersection of the adjacent corner areas of the outer surface of the liquid tank. Through the first to third prefabricated plates and in cooperation with the sprayed heat insulation layer, the sealing property and the heat insulation capacity of the heat insulation system in the dome area of the liquid tank can be effectively improved, and various deformations of the liquid tank in the working state can be adapted; through the fixing assembly, the installation of the prefabricated heat insulation plates can be realized, and the processing and installation difficulty of the system is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship design, in particular to a liquid tank edge heat insulation system and a mounting method. BACKGROUND

[0002] The liquid-tight shell for loading low-temperature liquid cargo on a liquefied gas ship is generally referred to as a liquid tank, and the liquid tank can be divided into a membrane type and an independent type, and 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 large liquid cargo carrying space, no limitation on liquid cargo loading capacity, small liquid cargo evaporation rate, easy installation and easy maintenance, and has been widely used in liquefied gas ships for transporting natural gas, liquefied ethane / ethylene and other fuel tanks of other ship types.

[0003] According to the design specification of the independent liquid tank, in order to limit the heat flow entering the liquid tank to a level that can be maintained by the pressure and temperature control system, an insulation layer needs to be provided on the surface of the liquid tank to control the temperature, pressure and evaporation rate of the low-temperature liquid cargo in the liquid tank to the design level. At present, due to the complex structure of the independent type B liquid tank and the large deformation in the working state, a single spray insulation form is not suitable for the independent type B liquid tank, and the plate type insulation system has a large strength in theory, therefore, the insulation system of the independent type B liquid tank mainly adopts the plate type insulation system, that is, the insulation plate is installed on the outer surface of the independent type B liquid tank. However, due to the complex structure of the independent type B liquid tank, especially in the edge area of the outer surface of the independent type B liquid tank, the existing insulation system cannot meet the insulation requirements of the independent type B liquid tank, which brings safety hazards to the transportation of low-temperature liquid cargo. SUMMARY

[0004] The purpose of the present application is to provide a liquid tank edge heat insulation system to solve the problem that the existing heat insulation system cannot meet the heat insulation requirements of the liquid tank, and to effectively improve the heat insulation effect of the heat insulation system and adapt to various deformations of the liquid tank in the working state.

[0005] To achieve the above-mentioned purpose and other related purposes, the present application provides a liquid tank edge heat insulation system, comprising:

[0006] A prefabricated insulation plate, comprising 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 the adjacent two outer surfaces of the liquid tank intersect, and the third prefabricated plate is arranged between the first prefabricated plate and the second prefabricated plate to form a narrow area, wherein the second prefabricated plate is an arc-shaped or straight-bent plate structure;

[0007] A fixing assembly for connecting the prefabricated plate to the outer surface of the liquid tank;

[0008] A spray thermal insulation layer is formed on a corner reserved area of the liquid tank outer surface adjacent to the intersection of the corner areas.

[0009] Optionally, the prefabricated thermal insulation plate comprises an inner thermal insulation layer, an outer thermal insulation layer and a reinforcing layer.

[0010] The inner thermal insulation layer is located on the outer surface of the liquid tank, the side surface of the inner thermal insulation layer is covered with an inner cladding layer, a liquid-tight plate is arranged on the surface of the inner thermal insulation layer close to the liquid tank, a protruding structure and a leakage groove are arranged on the surface of the liquid-tight plate close to the liquid tank, a through leakage space is formed between the protruding structure and the liquid tank, and the leakage groove is in communication with the leakage space.

[0011] The outer thermal insulation layer is located on the surface of the inner thermal insulation layer, and the size of the outer thermal insulation layer is smaller than that of the inner thermal insulation layer, so that the side surface of the prefabricated thermal insulation plate forms a stepped structure, and the side surface of the outer thermal insulation layer is covered with an outer cladding layer.

[0012] The reinforcing layer is located between the inner thermal insulation layer and the outer thermal insulation layer, and a first protective layer is arranged on the surface of the outer thermal insulation layer away from the inner thermal insulation layer.

[0013] Optionally, the fixing assembly is located in the joint between adjacent prefabricated thermal insulation plates, and the fixing assembly comprises:

[0014] A U-shaped fixing member is located in the joint between adjacent inner thermal insulation layers, the top of the U-shaped fixing member has two folded edges, the folded edges are located on the stepped surface of the stepped structure of the side surface of the prefabricated thermal insulation plate, and an insulation plug is arranged in the U-shaped space of the U-shaped fixing member.

[0015] A reinforcing structure is located on the folded edges of the U-shaped fixing member and connected to the two folded edges respectively.

[0016] A fixed connection part comprises a fixed column, a connecting rod and a fixed 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 connected to the fixed column, and the fixed bolt is used to connect the connecting rod to the U-shaped fixing member.

[0017] Optionally, the spray thermal insulation layer comprises a first thermal insulation spray layer, a spray reinforcing layer and a second thermal insulation spray layer which are stacked in sequence, and the first thermal insulation spray layer is attached to the outer surface of the liquid tank.

[0018] Optionally, the first thermal spray layer is connected to the inner thermal insulation layer of the adjacent prefabricated insulation board, the spray strengthening layer is connected to the strengthening layer of the adjacent prefabricated insulation board, the second thermal spray layer is connected to the outer thermal insulation layer of the adjacent prefabricated insulation board, and a spray protective layer is further arranged on the outer surface of the second thermal spray layer, and the spray protective layer is connected to the first protective layer on the adjacent prefabricated insulation board.

[0019] Optionally, the liquid tank edge thermal insulation system further comprises:

[0020] A thermal insulation buffer layer is arranged in the joint between the adjacent prefabricated insulation boards.

[0021] A second protective layer is arranged on the thermal insulation buffer layer and extends to the outer surface of the prefabricated insulation board.

[0022] The application further provides a mounting method of a liquid tank edge thermal insulation system, which is used for mounting any one of the liquid tank edge thermal insulation systems in the foregoing embodiments, and comprises the following steps:

[0023] Obtaining prefabricated insulation boards and a fixing assembly, wherein the prefabricated insulation boards comprise a first prefabricated board, a second prefabricated board and a third prefabricated board;

[0024] Grid partitioning and preset mounting position positioning are performed on the outer surface of the liquid tank;

[0025] The fixing column in the fixing assembly is connected to the preset mounting position;

[0026] According to the preset mounting position, the second prefabricated board, the third prefabricated board and the first prefabricated board are sequentially mounted to the outer surface of the liquid tank by using the fixing assembly, so as to complete the mounting of the prefabricated insulation boards;

[0027] A spray thermal insulation layer is formed by spraying in the corner reserved area of the outer surface of the liquid tank.

[0028] Optionally, the step of connecting the fixing column in the fixing assembly to the preset mounting position comprises:

[0029] The preset mounting position is polished and cleaned, wherein the polishing diameter is 20mm-30mm;

[0030] The fixing column is welded to the preset mounting position, and the coaxial tolerance between the actual mounting position of the fixing column and the preset mounting position is not more than 3mm, and the included angle between the fixing column and the outer surface of the liquid tank is 87°-93°.

[0031] Optionally, the liquid tank edge thermal insulation system further comprises a first protective layer, a thermal insulation buffer layer and a second protective layer; after the mounting of the prefabricated insulation boards is completed, the method further comprises the following steps:

[0032] a first protective layer is applied on the outer surface of the prefabricated insulation board;

[0033] the insulation buffer layer is installed into the joint between adjacent prefabricated insulation boards;

[0034] a second protective layer is applied on the outer surface of the insulation buffer layer, and the second protective layer extends to the outer surface of adjacent prefabricated insulation boards;

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

[0036] Optionally, the step of spraying a sprayed insulation layer on the corner reserved area of the outer surface of the liquid tank includes:

[0037] a first material is sprayed on the corner reserved area to form a first sprayed insulation layer, and the thickness of the first sprayed insulation layer is consistent with the thickness of the inner insulation layer of adjacent prefabricated insulation boards;

[0038] a sprayed reinforcement layer is applied on the first sprayed insulation layer, and the sprayed reinforcement layer is connected with the reinforcement layer of adjacent prefabricated insulation boards;

[0039] a second material is sprayed on the sprayed reinforcement layer to form a second sprayed insulation layer, and the thickness of the second sprayed insulation layer is consistent with the thickness of the outer insulation layer of adjacent prefabricated insulation boards.

[0040] Optionally, the liquid tank edge insulation system further comprises a sprayed protective layer, and after the step of spraying a sprayed insulation layer on the corner reserved area of the outer surface of the liquid tank is completed, the following steps are further included:

[0041] the sprayed insulation layer is modified, polished and cleaned;

[0042] a sprayed protective layer is applied on the outer surface of the sprayed insulation layer;

[0043] The thickness of the sprayed protective layer is 0.5mm-1.5mm, and the overlapping width of the sprayed protective layer and the outer surface of adjacent prefabricated insulation boards is not less than 25mm.

[0044] As described above, compared with the prior art, the liquid tank edge insulation system and the installation method provided by the present application have at least the following beneficial effects:

[0045] The liquid tank edge insulation system provided in this application, through the first to third prefabricated panels and the application of a sprayed insulation layer, effectively improves the sealing and insulation capacity of the insulation system in the edge area of ​​the liquid tank. It also allows the liquid tank edge insulation system to adapt to various deformations of the liquid tank during operation, thus improving the operational stability of the insulation system. The fixing components enable the installation of various prefabricated insulation panels, especially in the edge area of ​​the complex outer surface of the liquid tank, effectively simplifying the installation process, improving the design efficiency of the insulation system, and reducing the processing and installation difficulty. The liquid tank edge insulation system of this application has advantages such as reliable structure and high integration, providing excellent insulation function in low-temperature environments and effectively improving the system's insulation effect and operational reliability. The installation method of this application is used to install the aforementioned liquid tank edge insulation system, and therefore also possesses the aforementioned beneficial effects. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings 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 should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0047] Figures 1 to 3 The diagrams shown are schematic diagrams of the liquid tank edge insulation system provided in Embodiment 1 of this application at different locations on the liquid tank.

[0048] Figure 4 The diagram shown is a structural schematic of a corner reserved area on the outer surface of a liquid tank provided in Embodiment 1 of this application.

[0049] Figure 5 The diagram shown is a structural schematic of a sprayed insulation layer provided in Embodiment 1 of this application.

[0050] Figure 6 The diagram shown is a structural schematic of a first precast slab provided in Embodiment 1 of this application.

[0051] Figure 7 The diagram shown is a structural schematic of the joint between adjacent prefabricated insulation panels provided in Embodiment 1 of this application.

[0052] Figure 8 and Figure 9 The diagrams shown are schematic diagrams of two different protrusion structures provided in Embodiment 1 of this application.

[0053] Figure 10 The diagram shown is a structural schematic of a fixing component provided in Embodiment 1 of this application.

[0054] Figure 11Fig. 1 shows a structural schematic diagram of a U-shaped fixing member provided in Embodiment One of the present application.

[0055] Figure 12 and Figure 13 Fig. 2 and Fig. 3 respectively show structural schematic diagrams of two different second prefabricated plates provided in Embodiment One of the present application.

[0056] Figure 14 Fig. 4 shows a structural schematic diagram of a third prefabricated plate provided in Embodiment One of the present application.

[0057] Figure 15 Fig. 5 shows a flow schematic diagram of a mounting method of a liquid tank edge thermal insulation system provided in Embodiment Two of the present application.

[0058] Reference signs are shown as follows:

[0059] 11, prefabricated thermal insulation plate; 101, first prefabricated plate; 102, second prefabricated plate; 103, third prefabricated plate; 111, inner thermal insulation layer; 112, outer thermal insulation layer; 113, reinforcing layer; 114, liquid-tight plate; 1141, protruding structure; 115, inner cladding layer; 116, outer cladding layer; 117, first protective layer; 12, fixing assembly; 121, U-shaped fixing member; 1211, folded edge; 1212, thermal insulation plug; 122, reinforcing structure; 123, fixed connecting part; 1231, fixed column; 1232, fixed bolt; 1233, connecting rod; 13, sprayed thermal insulation layer; 131, sprayed protective layer; 141, thermal insulation buffer layer; 142, second protective layer; 20, liquid tank; 211, corner reserved area. DETAILED DESCRIPTION

[0060] In order to make the technical purposes, technical solutions and technical effects of the present application clearer, the technical solutions in the present application will be described clearly and completely in combination with embodiments below. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0061] Therefore, the detailed description of the embodiments of the present application below is not intended to limit the scope of the claimed present application, but only 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 making creative efforts fall within the scope of protection of the present application. In addition, the terms “first” and “second” are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0062] In the description of this application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0063] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, for example, referring to both fixed connections and detachable connections. Furthermore, the descriptions using terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with an implementation or example is included in at least one implementation or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same implementation or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more implementations or examples.

[0064] Example 1

[0065] This embodiment provides a liquid tank edge insulation system, referring to... Figures 1 to 3 The edge region is installed on the outer surface of the liquid tank 20, wherein the edge region is the area where several adjacent outer surfaces of the liquid tank 20 intersect. The liquid tank 20 can be, for example, a type B independent liquid tank. (See reference...) Figure 4 and Figure 5 The liquid tank edge insulation system of this embodiment includes a prefabricated insulation panel 11, a fixing component 12, and a sprayed insulation layer 13.

[0066] 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, the second prefabricated panel 102 is laid in the corner area where two adjacent outer surfaces of the liquid tank 20 intersect, and the third prefabricated panel 103 is disposed in the narrow area formed between the first prefabricated panel 101 and the second prefabricated panel 102. The second prefabricated panel 102 is a plate-like structure with an arc-shaped bend or a straight bend.

[0067] The fixing assembly 12 is used to connect the prefabricated insulation panel 11 to the liquid tank 20 to realize the installation and use of the prefabricated insulation panel 11. The sprayed insulation layer 13 is formed in the corner reserved area 211 at the intersection of adjacent corner areas on the outer surface of the liquid tank 20.

[0068] The corner area is the edge area where two adjacent outer surfaces of the liquid tank 20 intersect, and the corner reserved area 211 is the corner area where two or more adjacent edge areas intersect. Due to the complexity of the structure of the liquid tank 20, and the specific structural shapes of the first prefabricated plate 101 and the second prefabricated plate 102, after the first prefabricated plate 101 and the second prefabricated plate 102 are laid on the outer surface of the liquid tank 20, several uncovered narrow areas will be formed between the first prefabricated plate 101 and the second prefabricated plate 102 near the edge area of ​​the outer surface of the liquid tank 20. Covering these narrow areas with the third prefabricated plate 103 helps to maintain the insulation effect of the system.

[0069] When liquid cargo is contained in the liquid tank 20, the edge insulation system of this embodiment can achieve good insulation of the liquid tank 20, reducing heat transfer between the external environment and the liquid tank 20. In the edge insulation system, the first prefabricated plate 101 to the third prefabricated plate 103, in conjunction with the sprayed insulation layer 13, effectively improve the sealing and insulation capacity of the insulation system in the edge area of ​​the liquid tank 20, and allow the edge insulation system to adapt to various deformations of the liquid tank 20 under working conditions, thus improving the working stability of the insulation system. The fixing component 12 enables the installation of each prefabricated insulation plate 11, especially in the structurally complex edge area of ​​the liquid tank 20, 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 edge insulation system of this embodiment has advantages such as reliable structure and high integration, providing good insulation function in low-temperature environments, and effectively improving the insulation effect and operational reliability.

[0070] In this embodiment, refer to Figure 6 The prefabricated insulation panel 11 has a multi-layer structure, including an inner insulation layer 111, an outer insulation layer 112, and a reinforcing layer 113. The first prefabricated panel 101, the second prefabricated panel 102, and the third prefabricated panel 103 can all adopt the above-mentioned multi-layer structure.

[0071] The inner insulation layer 111 is located on the outer surface of the liquid tank 20, and the outer insulation layer 112 is located on the surface of the inner insulation layer 111. The outer insulation layer 112 is smaller than the inner insulation layer 111, meaning the projection of the outer insulation layer 112 onto the outer surface of the inner insulation layer 111 is within the outer surface of the inner insulation layer 111, thus forming a stepped structure on the side of the prefabricated insulation panel 11. A reinforcing layer 113 is located between the inner insulation layer 111 and the outer insulation layer 112, creating a gap between them. Optionally, the reinforcing layer 113 completely covers the outer surface of the inner insulation layer 111 near the outer insulation layer 112.

[0072] The inner thermal insulation layer 111 and the outer thermal insulation layer 112 of the prefabricated thermal insulation board 11 form a two-stage thermal insulation structure, which can improve the thermal insulation effect and service life of the liquid tank edge thermal insulation system. When the inner thermal insulation layer 111 deforms greatly and cracks, the reinforcing layer 113 separates the inner thermal insulation layer 111 from the outer thermal insulation layer 112, which can reduce the stress transmission between the inner thermal insulation layer 111 and the outer thermal insulation layer 112, reduce the risk of simultaneous cracking of the outer thermal insulation layer 112, and continuously maintain the thermal insulation effect of the system through the outer thermal insulation layer 112, thereby improving the working reliability of the liquid tank edge thermal insulation system.

[0073] The composition materials of the inner thermal insulation layer 111 and the outer thermal insulation layer 112 include thermal insulation materials, and the thermal insulation materials constituting the inner thermal insulation layer 111 and the outer thermal insulation layer 112 include but are not limited to one or more of polyurethane foam, polystyrene foam, polyethylene, phenolic foam, aerogel and other materials. In order to improve the thermal insulation capacity, mechanical strength and flame retardant capacity of the inner thermal insulation layer 111 and the outer thermal insulation layer 112, the composition materials of the inner thermal insulation layer 111 and the outer thermal insulation layer 112 can also include reinforcing materials, and the reinforcing materials constituting the inner thermal insulation layer 111 and the outer thermal insulation layer 112 include but are not limited to one or more of glass fiber, hollow glass microspheres and other materials. The composition material of the reinforcing layer 113 is a mesh material, and optionally, the mesh material constituting the reinforcing layer 113 can be one or more of glass fiber aluminum foil mesh cloth, carbon fiber mesh cloth, metal mesh or other suitable mesh materials.

[0074] In optional embodiments, the inner thermal insulation layer 111, the outer thermal insulation layer 112 and the reinforcing layer 113 are fixedly connected, for example, by bonding or other suitable means to fixedly connect the inner thermal insulation layer 111, the outer thermal insulation layer 112 and the reinforcing layer 113. Optionally, the inner thermal insulation layer 111, the outer thermal insulation layer 112 and the reinforcing layer 113 are bonded by a low-temperature adhesive, which can be, for example, polyurethane glue, butyl glue, resin glue or other suitable adhesives.

[0075] In this embodiment, referring to Figure 7 , the liquid tank edge thermal insulation system further includes an inner cladding layer 115, which is wrapped on the side surface of the inner thermal insulation layer 111. In use, the inner cladding layer 115 fills the gap between adjacent inner thermal insulation layers 111, provides a buffer space for the deformation between adjacent inner thermal insulation layers 111, can alleviate the deformation caused by thermal expansion and contraction of the liquid tank 20, and reduce the risk of cracking caused by thermal expansion and contraction. The inner cladding layer 115 and the inner thermal insulation layer 111 can be connected by bonding or other suitable means.

[0076] The inner cladding 115 is made of elastic thermal insulation material. Optionally, the elastic thermal insulation material constituting the inner cladding 115 includes, but is not limited to, one or more of glass wool, polyurethane foam, melamine foam, ethylene-vinyl acetate copolymer foam, polyethylene foam, polypropylene foam, polyimide foam, or other suitable materials. The inner cladding 115 can be pre-made and applied to the side surface of the inner thermal insulation layer 111, or can also be formed by filling elastic thermal insulation material between adjacent inner thermal insulation layers 111.

[0077] In the embodiment, the liquid tank edge thermal insulation system further includes an outer cladding 116, which is wrapped on the side surface of the outer thermal insulation layer 112. The outer cladding 116 and the outer thermal insulation layer 112 can be connected by bonding or other suitable means. In use, the outer cladding 116 fills the gap between adjacent outer thermal insulation layers 112, provides a buffer space for the deformation between adjacent outer thermal insulation layers 112, and can relieve the deformation of the liquid tank 20 caused by thermal expansion and contraction, thereby reducing the risk of cracking caused by thermal expansion and contraction.

[0078] The outer cladding 116 is made of elastic thermal insulation material. Optionally, the elastic thermal insulation material constituting the outer cladding 116 includes, but is not limited to, one or more of glass wool, polyurethane foam, melamine foam, ethylene-vinyl acetate copolymer foam, polyethylene foam, polypropylene foam, polyimide foam, or other suitable materials.

[0079] In the embodiment, the liquid tank edge thermal insulation system further includes a first protective layer 117, which is applied to the surface of the outer thermal insulation layer 112 away from the inner thermal insulation layer 111. The first protective layer 117 can be made of thermoplastic polyolefin elastomer, or can also be made of other suitable materials. Optionally, the first protective layer 117 is made of one or more of polyolefin resin materials such as polypropylene, polyethylene, or other suitable materials. The first protective layer 117 has a predetermined strength and thickness, and can provide good mechanical protection and anti-aging protection for the prefabricated thermal insulation plate 11.

[0080] In an optional embodiment, the prefabricated thermal insulation plate 11 further includes a liquid-tight plate 114, which is arranged on the surface of the inner thermal insulation layer 111 close to the liquid tank 20. The liquid-tight plate 114 can be made of metal, composite material, or other suitable materials. Referring to Figure 8 and Figure 9The liquid-tight plate 114 is further provided with a protruding structure 1141 on the surface close to the liquid tank 20, and a through leakage space is formed between the protruding structure 1141 and the liquid tank 20. The leakage space serves as a leakage channel, so that the low-temperature liquid cargo leaked from the liquid tank 20 can be collected at a preset position, for example, the bottom of the liquid tank 20, and then discharged through a discharge port. The protruding structure 1141 can be in a polygonal structure, a semispherical structure, a semi-ellipsoidal structure, or other suitable structures.

[0081] Further, the liquid-tight plate 114 is further provided with a leakage groove on the surface close to the liquid tank 20, and the leakage groove is in communication with the leakage space. The leakage groove serves as a leakage channel in the leakage space, so that the low-temperature liquid cargo leaked from the liquid tank 20 can be collected at a preset position.

[0082] In this embodiment, referring to Figure 7 , the fixing assembly 12 is located in the joint between adjacent prefabricated insulation plates 11, and the fixing assembly 12 includes a U-shaped fixing piece 121, a reinforcing structure 122, and a fixing connecting part 123. Referring to Figure 10 and Figure 11 , the U-shaped fixing piece 121 is located in the joint between adjacent inner insulation layers 111, and the top of the U-shaped fixing piece 121 has two folded edges 1211, both of which are located on the step surface of the step structure on the side of the prefabricated insulation plate 11. The reinforcing structure 122 is located on the folded edge 1211 of the U-shaped fixing piece 121 and is connected to the two folded edges 1211, respectively. Optionally, the reinforcing structure 122 is a plate structure including two reinforcing ribs, each of which is fixedly connected to the two folded edges 1211 and is spaced apart from the two ends of the folded edge 1211 in the extension direction of the folded edge 1211, so as to improve the structural stability of the U-shaped fixing piece 121.

[0083] Referring to Figure 7 and Figure 10 , the fixing connecting part 123 includes a fixing column 1231, a connecting rod 1233, and a fixing bolt 1232. The fixing column 1231 is connected to the liquid tank 20, the connecting rod 1233 is located between the fixing column 1231 and the U-shaped fixing piece 121 and is connected to the fixing column 1231, and the fixing bolt 1232 is used to connect the connecting rod 1233 to the U-shaped fixing piece 121, so as to connect the fixing connecting part 123 to the U-shaped fixing piece 121, and then fix the prefabricated insulation plate 11 on the surface of the liquid tank 20. The inner cladding layer 115 is filled in the joint between adjacent inner insulation layers 111, so as to maintain good thermal insulation effect of the thermal insulation system.

[0084] In an optional embodiment, the fixed column 1231 is fixedly connected with the liquid tank 20, and the fixed column 1231 can be fixed to the outer surface of the liquid tank 20 by welding or other suitable manners. The upper and lower ends of the connecting rod 1233 are provided with threaded holes, the fixed column 1231 is a threaded column, and the fixing bolt 1232 includes a nut and a threaded column. The nut of the fixing bolt 1232 is located at the bottom of the U-shaped space of the U-shaped fixing piece 121, the threaded column penetrates through the U-shaped fixing piece 121, and the connecting rod 1233 is fixedly connected with the fixed column 1231 and the fixing bolt 1232 through the threaded holes.

[0085] Further, the fixed connection part 123 can further include a gasket, which is arranged between the nut of the fixing bolt 1232 and the U-shaped fixing piece 121, and the nut of the fixing bolt 1232 is pressed against the U-shaped fixing piece 121 through the gasket.

[0086] Further, the fixed connection part 123 can further include a reinforced adhesive layer, which is located in the threaded hole of the connecting rod 1233 and between the connecting rod 1233 and the fixed column 1231 and between the connecting rod 1233 and the fixing bolt 1232, for reinforcing the connection between the connecting rod 1233 and the fixed column 1231 and the fixing bolt 1232. The reinforced adhesive layer can be, for example, a layer of low-temperature glue, which is added to the threaded hole of the connecting rod 1233 to form the reinforced adhesive layer.

[0087] Further, the connecting rod 1233 can be made of a material with a 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 fixed assembly 12 and improve the heat insulation effect of the heat insulation system.

[0088] In an optional embodiment, referring to Figure 7 , the U-shaped space of the U-shaped fixing piece 121 is provided with an insulating plug 1212 for limiting the deformation of the U-shaped fixing piece 121 towards the center when the U-shaped fixing piece 121 is under stress, and the insulating plug 1212 also serves to fill the gaps in the U-shaped fixing piece 121, which helps to maintain good heat insulation effect of the heat insulation system and prevent the generation of local cold spots.

[0089] Referring to Figure 6 , the first prefabricated plate 101 can be a polygonal plate structure, which is laid on the outer surface of the liquid tank 20. Optionally, the first prefabricated plate 101 can be, for example, a rectangular plate structure, which is laid on the planar area of the outer surface of the liquid tank 20. Referring to Figure 12 and Figure 13, the second prefabricated plate 102 is an arc-shaped or straightly bent plate structure, which is arranged on the corner area of the outer surface of the liquid tank 20. Specifically, the inner surface and the outer surface of the second prefabricated plate 102 may, for example, be arc-shaped surfaces, or the inner surface and the outer surface of the second prefabricated plate 102 may, for example, be multi-fold surfaces. Referring to Figure 14 , the third prefabricated plate 103 may, for example, be a triangular plate structure, which is arranged on the planar area of the outer surface of the liquid tank 20 and used to fill the narrow area between the first prefabricated plate 101 and the second prefabricated plate 102.

[0090] In the embodiment, referring to Figure 4 and Figure 5 , the intersection of the adjacent corner areas of the outer surface of the liquid tank 20 forms a corner reserved area 211, which can also be understood as the corner area of the intersection of at least three outer surfaces of the adjacent outer surfaces of the liquid tank 20, and the sprayed thermal insulation layer 13 is formed on the corner reserved area 211. The sprayed thermal insulation layer 13 may, for example, be a single-layer structure or a multi-layer structure, which is formed by spraying a specific elastic thermal insulation material onto the corner reserved area 211.

[0091] In an optional embodiment, the sprayed thermal insulation layer 13 is a multi-layer structure, which includes a first thermal insulation sprayed layer, a sprayed reinforcement layer, and a second thermal insulation sprayed layer which are sequentially stacked. The first thermal insulation sprayed layer is attached to the outer surface of the liquid tank 20 and connected to the inner thermal insulation layer 111 of the adjacent prefabricated thermal insulation plate 11; the sprayed reinforcement layer is formed on the first thermal insulation sprayed layer and connected to the reinforcement layer 113 of the adjacent prefabricated thermal insulation plate 11; and the second thermal insulation sprayed layer is formed on the sprayed reinforcement layer and connected to the outer thermal insulation layer 112 of the adjacent prefabricated thermal insulation plate 11. The materials of the first thermal insulation sprayed layer and the second thermal insulation sprayed layer are thermal insulation materials, which may, for example, be polyurethane foam or other suitable materials, and the sprayed reinforcement layer is made of one or more grid materials, which may, for example, be one or more of glass fiber aluminum foil mesh, carbon fiber mesh, metal mesh, or other suitable materials. By arranging the sprayed thermal insulation layer 13 as a multi-layer structure, the thermal insulation capacity of the sprayed thermal insulation layer 13 can be improved, and the mechanical strength and fire resistance of the sprayed thermal insulation layer 13 can also be improved.

[0092] Further, the outer surface of the second thermal insulation sprayed layer is provided with a sprayed protective layer 131, which is connected to the first protective layer 117 on the adjacent prefabricated thermal insulation plate 11 and can provide good mechanical protection and anti-aging protection for the sprayed thermal insulation layer 13. The material of the sprayed protective layer 131 is a thermoplastic polyolefin elastomer material, or other suitable materials may also be used, specifically, the material of the sprayed protective layer 131 may, for example, be one or more of polypropylene, polyethylene, and other suitable polyolefin resin materials.

[0093] In this embodiment, referring to Figure 7 , the liquid tank edge insulation system further comprises an insulation buffer layer 141 located in the joint between adjacent prefabricated insulation boards 11. Specifically, the insulation buffer layer 141 is located in the joint between the two adjacent outer insulation layers 112, and the insulation buffer layer 141 is arranged in the joint 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 the adjacent outer insulation layers 112, achieve sealing effect, ensure that the liquid tank edge insulation system has good insulation effect, and at the same time provide buffer space for the deformation between the outer insulation boards, reduce the risk of cracking of the outer insulation boards. The composition material of the insulation buffer layer 141 can be an elastic insulation material, for example, the elastic insulation material constituting the insulation buffer layer 141 can be one or more of glass wool, polyurethane foam, melamine foam, ethylene-vinyl acetate copolymer foam, polyethylene foam, polypropylene foam, polyimide foam or other suitable materials.

[0094] In this embodiment, the liquid tank edge insulation system further comprises a second protective layer 142, which is laid on the outer surface of the insulation buffer layer 141 and extends to the outer surface of the adjacent prefabricated insulation board 11. The material of the second protective layer 142 can be thermoplastic polyolefin elastomer, or can also be made of other suitable materials, specifically, the composition material of the second protective layer 142 can be one or more of polyolefin resin materials such as polypropylene, polyethylene and other suitable materials. The second protective layer 142 has a predetermined strength and thickness, and covers part of the outer surface of the insulation buffer layer 141 and the adjacent prefabricated insulation board 11, which can provide good mechanical protection and anti-aging protection.

[0095] Embodiment two

[0096] The embodiment provides a mounting method of a liquid tank edge insulation system, which is used to mount the liquid tank edge insulation system of any one of the embodiments one. Through the mounting method of the embodiment, the liquid tank edge insulation system can be mounted to the edge area of the outer surface of the liquid tank 20 to achieve the insulation protection of the edge area of the liquid tank 20. The edge area is the area where the adjacent outer surfaces of the liquid tank 20 intersect.

[0097] Referring to Figure 15 , the mounting method of the embodiment comprises steps S1 to S5, specifically comprising:

[0098] S1, obtaining prefabricated insulation boards 11 and fixing assemblies 12, wherein the prefabricated insulation boards 11 comprise first prefabricated boards 101, second prefabricated boards 102 and third prefabricated boards 103;

[0099] S2, grid division and preset installation position positioning are performed on the outer surface of the liquid tank 20;

[0100] S3, connecting the fixing column 1231 in the fixing assembly 12 to the preset installation position;

[0101] S4, according to the preset installation position, sequentially installing the second prefabricated plate 102, the third prefabricated plate 103 and the first prefabricated plate 101 on the outer surface of the liquid tank 20 by using the fixing assembly 12 to complete the installation of the prefabricated insulation plate 11;

[0102] S5, spraying the spray insulation layer 13 on the corner reserved area 211 of the outer surface of the liquid tank 20.

[0103] In step S1, the fixing assembly 12 includes a U-shaped fixing part 121, a reinforcing structure 122 and a fixing connecting part 123, the fixing connecting part 123 includes a fixing column 1231, a connecting rod 1233 and a fixing bolt 1232. According to the design requirements, the production and processing of the fixing assembly 12 and the first prefabricated plate 101, the second prefabricated plate 102 and the third prefabricated plate 103 are completed to obtain the prefabricated insulation plate 11 and the fixing assembly 12.

[0104] 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 plate 11, and the preset installation position is positioned according to the grid division result, wherein the preset installation position is the installation position of the fixing column 1231 in the fixing assembly 12 on the outer surface of the liquid tank 20.

[0105] In step S3, the fixing column 1231 can be connected to the preset installation position of the liquid tank 20 by welding or other suitable methods. Optionally, performing step S3 can include the following steps: polishing and cleaning the preset installation position; welding the fixing column 1231 to the preset installation position, and the coaxial tolerance between the actual installation position of the fixing column 1231 and the preset installation position is not more than 3mm, and the included angle between the fixing column 1231 and the outer surface of the liquid tank 20 is 87°-93°. Further, in the step of polishing and cleaning the preset installation position, the polishing diameter is 20mm-30mm.

[0106] In step S4, the second prefabricated plate 102, the third prefabricated plate 103 and the first prefabricated plate 101 are sequentially installed, and the second prefabricated plate 102, the third prefabricated plate 103 and the first prefabricated plate 101 are fixed on the outer surface of the liquid tank 20 by using the fixing assembly 12. Among them, by controlling the installation sequence of the first prefabricated plate 101 to the third prefabricated plate 103, it is helpful to improve the coverage effect of the edge area of the outer surface of the liquid tank 20, reduce the installation difficulty, and improve the installation efficiency and installation quality.

[0107] In the embodiment, the liquid tank edge insulation system further comprises a first protective layer 117, an insulation buffer layer 141 and a second protective layer 142. After the installation of the prefabricated insulation board 11 is completed, the following steps are further included: applying the first protective layer 117 on the outer surface of the prefabricated insulation board 11; installing the insulation buffer layer 141 into the joint between adjacent prefabricated insulation boards 11; and applying the second protective layer 142 on the outer surface of the insulation buffer layer 141 and extending the second protective layer 142 to the outer surface of the adjacent prefabricated insulation board 11.

[0108] The thickness of the first protective layer 117 is 0.5mm-1.5mm, and specifically, the thickness of the first protective layer 117 can be 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm or other suitable values. The thickness of the second protective layer 142 is 0.5mm-1.5mm, and specifically, the thickness of the second protective layer 142 can be 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm or other suitable values. The overlapping width of the second protective layer 142 with the outer surface of the adjacent prefabricated insulation board 11 is not less than 25mm, and the overlapping width can be 25mm, 30mm or other suitable values.

[0109] In an optional embodiment, the insulation buffer layer 141 is fixedly connected with the prefabricated insulation board 11, the fixing assembly 12 and the insulation plug 1212, for example, by low-temperature adhesive or other suitable means, so as to alleviate the mutual extrusion deformation of the prefabricated insulation board 11 under the conditions of liquid tank 20 shaking, thermal expansion and contraction, etc.

[0110] In an optional embodiment, before the step of applying the first protective layer 117 on the outer surface of the prefabricated insulation board 11, the following steps are further included: obtaining prefabricated first protective layer 117 and second protective layer 142. The first protective layer 117 and the second protective layer 142 can be prefabricated, and after the installation of the prefabricated insulation board 11 is completed, the first protective layer 117 is installed on the outer surface of the prefabricated insulation board 11, and the second protective layer 142 is installed on the outer surface of the insulation buffer layer 141, which helps to improve the design efficiency and installation efficiency of the insulation system.

[0111] In this embodiment, after the step S4 is performed, the first precast panel 101 and the second precast panel 102 enclose the corner reserved area 211 at the edge area of the outer surface of the liquid tank 20, and then the step S5 is performed to form the sprayed thermal insulation layer 13 in the corner reserved area 211. Optionally, the step S5 includes the following steps: spraying the first material in the corner reserved area 211 to form a first thermal insulation sprayed layer, and making the thickness of the first thermal insulation sprayed layer consistent with the thickness of the inner thermal insulation layer 111 of the adjacent precast thermal insulation panel 11; laying a sprayed reinforcement layer on the first thermal insulation sprayed layer, and making the sprayed reinforcement layer connect with the reinforcement layer 113 of the adjacent precast thermal insulation panel 11; spraying the second material on the sprayed reinforcement layer to form a second thermal insulation sprayed layer, and making the thickness of the second thermal insulation sprayed layer consistent with the thickness of the outer thermal insulation layer 112 of the adjacent precast thermal insulation panel 11.

[0112] The first material and the second material are thermal insulation materials, and the first material and the second material may be, for example, polyurethane foam or other suitable materials.

[0113] In an optional embodiment, the liquid tank edge thermal insulation system further includes a sprayed protective layer 131, and after the step of spraying the sprayed thermal insulation layer 13 in the corner reserved area 211 of the outer surface of the liquid tank 20 is performed, the following steps are further included: modifying, polishing and cleaning the sprayed thermal insulation layer 13; laying the sprayed protective layer 131 on the outer surface of the sprayed thermal insulation layer 13; wherein the thickness of the sprayed protective layer 131 is 0.5mm-1.5mm, and the overlapping width of the sprayed protective layer 131 with the outer surface of the adjacent precast thermal insulation panel 11 is not less than 25mm, i.e. the overlapping width of the sprayed protective layer 131 with the first protective layer 117 on the precast thermal insulation panel 11 is not less than 25mm, and the overlapping width may be, for example, 25mm, 30mm or other suitable values, so as to improve the protection effect of the liquid tank edge thermal insulation system.

[0114] The installation method of this embodiment is used to install any one of the liquid tank edge thermal insulation systems in Embodiment One to the outer surface of the liquid tank 20, and therefore the installation method of this embodiment also has the beneficial effects of Embodiment One; and based on the installation method of this embodiment, by making the first precast panel 101 completely cover the planar area of the outer surface of the liquid tank, the thermal insulation effect of the whole liquid tank can also be achieved.

[0115] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art 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 completed by those skilled in the art without departing from the spirit and technical thought disclosed in the present application should be covered by the claims of the present application.

Claims

1. A liquid tank edge insulation system characterized by, The application relates to a prefabricated heat insulation plate for a liquid tank. The prefabricated heat insulation plate comprises a first prefabricated plate, a second prefabricated plate and a third prefabricated plate, the first prefabricated plate is arranged on the outer surface of the liquid tank, the second prefabricated plate is arranged at the corner area where two adjacent outer surfaces of the liquid tank meet, and the third prefabricated plate is arranged in the narrow area formed between the first prefabricated plate and the second prefabricated plate, wherein the second prefabricated plate is an arc-shaped or straightly bent plate structure. A fixing assembly is arranged for connecting the prefabricated heat insulation plate to the outer surface of the liquid tank. A sprayed heat insulation layer is arranged at the corner reserved area where the outer surface of the liquid tank meets the corner area. The prefabricated heat insulation plate comprises an inner heat insulation layer, an outer heat insulation layer and a reinforcing layer. The inner heat insulation layer is arranged on the outer surface of the liquid tank, the side surface of the inner heat insulation layer is covered with an inner covering layer, a liquid-tight plate is arranged on the surface of the inner heat insulation layer close to the liquid tank, a convex structure and a leakage groove are arranged on the surface of the liquid-tight plate close to the liquid tank, a through leakage space is formed between the convex structure and the liquid tank, and the leakage groove is communicated with the leakage space. The outer heat insulation layer is arranged on the surface of the inner heat insulation layer, and the size of the outer heat insulation layer is smaller than that of the inner heat insulation layer, so that the side surface of the prefabricated heat insulation plate forms a stepped structure, and the side surface of the outer heat insulation layer is covered with an outer covering layer. The reinforcing layer is arranged between the inner heat insulation layer and the outer heat insulation layer, and a first protective layer is arranged on the surface of the outer heat insulation layer away from the inner heat insulation layer. The sprayed heat insulation layer comprises a first heat insulation sprayed layer, a sprayed reinforcing layer and a second heat insulation sprayed layer which are sequentially stacked, and the first heat insulation sprayed layer is attached to the outer surface of the liquid tank. The first heat insulation sprayed layer is connected to the inner heat insulation layer of the adjacent prefabricated heat insulation plate, the sprayed reinforcing layer is connected to the reinforcing layer of the adjacent prefabricated heat insulation plate, the second heat insulation sprayed layer is connected to the outer heat insulation layer of the adjacent prefabricated heat insulation plate, and a sprayed protective layer is further arranged on the outer surface of the second heat insulation sprayed layer and connected to the first protective layer on the adjacent prefabricated heat insulation plate.

2. The liquid tank edge insulation system of claim 1, wherein, The fixing assembly is arranged in the joint between the adjacent prefabricated heat insulation plates, and the fixing assembly comprises: A U-shaped fixing member is arranged in the joint between the adjacent inner heat insulation layers, the top of the U-shaped fixing member has two folded edges, the folded edges are arranged on the stepped surface of the stepped structure of the side surface of the prefabricated heat insulation plate, and an insulation plug is arranged in the U-shaped space of the U-shaped fixing member. A reinforcing structure is arranged on the folded edges of the U-shaped fixing member and connected to the two folded edges respectively. The fixing assembly comprises a fixing column, a connecting rod and a fixing bolt, the fixing column is connected to the liquid tank, the connecting rod is arranged between the fixing column and the U-shaped fixing member and connected to the fixing column, and the fixing bolt is used for connecting the connecting rod to the U-shaped fixing member.

3. The liquid tank edge insulation system of claim 1, wherein, Further, an insulation buffer layer is arranged in the joint between the adjacent prefabricated heat insulation plates, and a second protective layer is arranged on the insulation buffer layer and extended to the outer surface of the prefabricated heat insulation plate. The application further comprises the following steps: ​ 4. A method of installing a liquid tank edge insulation system for installing the liquid tank edge insulation system according to any one of claims 1 to 3, characterized in that ​ acquire prefabricated insulation panels and fixing components, wherein the prefabricated insulation panels comprise a first prefabricated panel, a second prefabricated panel and a third prefabricated panel; grid division and preset installation position positioning are performed on the outer surface of the liquid tank; the fixing column in the fixing component is connected to the preset installation position; the second prefabricated panel, the third prefabricated panel and the first prefabricated panel are sequentially installed to the outer surface of the liquid tank by using the fixing component according to the preset installation position, so as to complete the installation of the prefabricated insulation panels; a sprayed insulation layer is formed by spraying in the corner reserved area of the outer surface of the liquid tank.

5. The method of installing a liquid tank edge insulation system according to claim 4, wherein, The step of connecting the fixing column in the fixing component to the preset installation position comprises: polishing and cleaning are performed on the preset installation position, wherein the polishing diameter is 20mm-30mm; the fixing column is welded to the preset installation position, and the coaxial tolerance between the actual installation position of the fixing column and the preset installation position is not more than 3mm, and the included angle between the fixing column and the outer surface of the liquid tank is 87°-93°.

6. The method of installing a liquid tank edge insulation system according to claim 4, wherein, The liquid tank edge insulation system further comprises a first protective layer, an insulation buffer layer and a second protective layer; after the installation of the prefabricated insulation panels is completed, the following steps are further included: the first protective layer is laid on the outer surface of the prefabricated insulation panels; the insulation buffer layer is installed into the joint between adjacent prefabricated insulation panels; the second protective layer is laid on the outer surface of the insulation buffer layer, and the second protective layer extends to the outer surface of adjacent prefabricated insulation panels; wherein the thickness of the first protective layer is 0.5mm-1.5mm, the thickness of the second protective layer is 0.5mm-1.5mm, and the overlapping width of the second protective layer and the outer surface of adjacent prefabricated insulation panels is not less than 25mm.

7. The method of installing a liquid tank edge insulation system according to claim 4, wherein, The step of forming a sprayed insulation layer by spraying in the corner reserved area of the outer surface of the liquid tank comprises: a first material is sprayed in the corner reserved area to form a first insulation sprayed layer, and the thickness of the first insulation sprayed layer is consistent with the thickness of the inner insulation layer of adjacent prefabricated insulation panels; a sprayed reinforcement layer is laid on the first insulation sprayed layer, and the sprayed reinforcement layer is connected with the reinforcement layer of adjacent prefabricated insulation panels; a second material is sprayed on the sprayed reinforcement layer to form a second insulation sprayed layer, and the thickness of the second insulation sprayed layer is consistent with the thickness of the outer insulation layer of adjacent prefabricated insulation panels.

8. The method of installing a liquid tank edge insulation system according to claim 7, wherein, The liquid tank edge insulation system further comprises a sprayed protective layer; after the step of forming a sprayed insulation layer by spraying in the corner reserved area of the outer surface of the liquid tank is completed, the following steps are further included: the sprayed insulation layer is modified, polished and cleaned; a sprayed protective layer is laid on the outer surface of the sprayed insulation layer; wherein the thickness of the sprayed protective layer is 0.5mm-1.5mm, and the overlapping width of the sprayed protective layer and the outer surface of adjacent prefabricated insulation panels is not less than 25mm.

Images