A composite panel insulation system for independent liquid tanks and its installation method

Abstract

This application provides a composite panel insulation system and installation method for independent liquid tanks. The composite panel insulation system is used for insulating ship liquid tanks and includes: a flow guide plate laid on the entire outer surface of the ship's liquid tank; an insulation section, which has a multi-stage stepped tower structure, with several insulation sections arrayed and laid on the outer surface of the flow guide plate; and a fixing assembly disposed between the joints of adjacent insulation sections to install the flow guide plate and insulation section onto the outer surface of the ship's liquid tank. The technical solution of this application shortens the design cycle, simplifies the installation process, reduces costs, and improves the insulation effect by optimizing the design of the prefabricated insulation panel. The fixing assembly secures the prefabricated insulation panel, reducing the processing and installation difficulty of the insulation system, maintaining a good quality level, and improving the system's reliability. The composite panel insulation system for independent liquid tanks in this application has a reliable structure, high strength, and can provide good insulation performance in low-temperature environments.

Description

Technical Field

[0001] This application belongs to the field of shipbuilding technology, and in particular relates to a composite panel insulation system for independent liquid tanks and its installation method. Background Art

[0002] On liquefied gas carriers, the liquid-tight hull used to load cryogenic liquid cargoes is called a cargo tank. Cargo tanks are classified into membrane-type and freestanding types, with freestanding types including Type A, Type B, and Type C. Freestanding cargo tanks have long been used on ships transporting liquid ammonia, liquefied petroleum gas, liquefied natural gas, ethane, etc., due to their advantages such as large space, no limitation on cargo volume, low daily evaporation, and ease of installation and maintenance. Their insulation systems differ from the relatively mature membrane-type tanks. Freestanding cargo tanks have a more complex structure and experience greater deformation under cryogenic operating conditions, thus requiring the installation of a high-strength plate insulation system on the outer surface. However, existing plate insulation systems suffer from long design cycles, difficult joint installation, poor insulation performance, and complex overall processes, often resulting in significant discrepancies between actual performance and theoretical design.

[0003] Therefore, it is necessary to provide a technical solution that can effectively improve or solve the above-mentioned technical problems. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this application is to provide a composite panel insulation system for independent liquid tanks and an installation method thereof, so as to solve one or more of the problems of existing ship hull insulation systems, such as long design cycle, complex shape and structure, need for dedicated production line, high cost, and complicated installation process.

[0005] In a first aspect, this application provides a composite panel insulation system for independent liquid tanks, used for insulation of ship liquid tanks, comprising:

[0006] A flow deflector is installed on the entire outer surface of the ship's liquid tank;

[0007] The heat insulation section is a multi-stage stepped tower structure, and several heat insulation sections are arrayed and laid on the outer surface of the guide plate.

[0008] A fixing assembly is disposed between the joints of adjacent insulation components to mount the guide plate and the insulation components to the outer surface of the ship's liquid tank. The multi-layered perforated design of the guide plate forms a flow channel for leaking liquid, reducing heat convection; the stepped structure of the insulation components disperses stress, preventing joint cracking and providing superior insulation performance; the guide plate and insulation components are fixed to the outer surface of the ship's liquid tank via the fixing assembly, enhancing the overall stability of the system.

[0009] In some embodiments, a joint portion located between the insulation portions is also included, the joint portion comprising at least a branch joint plate and a strip joint plate; wherein...

[0010] The strip joint plate is provided at the joint between two adjacent insulation parts;

[0011] The branch joint plates are disposed at the central joints of several adjacent insulation sections. The branches of the branch joint plates extend from the center to the gaps between two adjacent insulation sections and connect with the strip joint plates. The cross-shaped branch joint plates cover the central joints of the four insulation sections, while the strip joint plates fill the linear joints, forming a continuous insulation barrier and reducing heat transfer through the joints. The combined design of the branch joint plates and strip joint plates effectively fills multi-directional joints, ensuring excellent insulation performance.

[0012] In some embodiments, a seam protection layer is also included, covering the upper surface of the seam and partially overlapping the upper surface of the insulation portion. The overlapping and overlapping of the seam protection layer with the insulation portion enhances seam sealing and improves system durability.

[0013] In some embodiments, the deflector is a multi-layered, open-cell, elastic pressure-bearing structure, comprising at least one high-density insulating foam material selected from polyurethane, polyimide, or polytetrafluoroethylene. The deflector is mounted on the outer surface of the ship's liquid tank via a fixing assembly. Deflectors made of the above materials possess high density characteristics to withstand the deformation pressure of the liquid tank, while also having a low thermal conductivity to reduce heat transfer, combining mechanical strength and thermal insulation performance.

[0014] In some embodiments, the insulation portion includes an inner insulation layer, an outer insulation layer, an insulation block, and a protective layer; wherein,

[0015] The inner insulation layer has an internal cavity, which is formed by the inner insulation layer bottom plate and the outer wall surrounding it;

[0016] The outer insulation layer is stacked on top of the inner insulation layer and has a hollow cavity, which is formed by the outer side wall of the outer insulation layer.

[0017] The insulation block penetrates the hollow cavity of the outer insulation layer and is embedded in the internal cavity of the inner insulation layer;

[0018] The protective layer is laid on the upper surface of the insulation block and covers part of the outer insulation layer. The insulation block is embedded in the inner insulation layer, which uses its ultra-low thermal conductivity to block heat transfer; the outer insulation layer and the protective layer form a physical barrier to prevent external heat radiation. Through the nested structure of the inner / outer insulation layer and the insulation block, multi-layer insulation is achieved to meet the requirements of ultra-low temperature environments.

[0019] In some embodiments, the outer wall of the inner insulation layer includes at least two stepped structures;

[0020] The outer wall of the outer insulation layer includes at least two stepped structures, and the bottom surface of the outer insulation layer is located within the top surface area of ​​the inner insulation layer, so that a multi-step stepped tower structure is formed from bottom to top between the inner and outer insulation layers. The staggered distribution of the outer stepped structures facilitates their own installation and fixation, reduces deformation caused by temperature, and effectively prevents heat transfer, ensuring the internal temperature of the liquid tank.

[0021] In some embodiments, the joint between adjacent insulation portions is filled with flexible insulation, which fills the gap between the insulation portion and the joint. Filling the joint with flexible insulation material absorbs deformation stress at the joint, prevents gap widening due to temperature differences, compensates for thermal expansion and contraction, and maintains insulation continuity.

[0022] In some embodiments, the fixing component is disposed within the joint between two adjacent insulation sections and passes downward through the guide plate to be fixed to the outer surface of the ship's liquid tank;

[0023] The fixing assembly includes an embedded part that passes through the guide plate and aligns with the joint of the insulation section, and a connecting assembly that overlaps the bottom step of the outermost side wall of the insulation section. The connecting assembly is connected to the embedded part to fix the position of the insulation section. The fixing assembly is fixed to the surface of the liquid tank by the embedded part, improving the installation accuracy and peel strength of the insulation section.

[0024] In some embodiments, the connecting assembly includes an overlapping portion, which comprises a concave first part and a stepped second part located at both ends of the upper edge of the concave structure, overlapping the insulation portion. The first part is situated between the joints of adjacent inner insulation layers, and a connector is provided at the lower end of the first part. The connector is connected to the lower embedded part via a sleeve. The threaded connection design between the embedded part and the sleeve ensures uniform stress on the fixing component, preventing stress concentration at the welding points of the embedded part from causing detachment. The folded edge of the overlapping portion is embedded into the stepped portion to form a snap-fit ​​structure, enhancing the bonding strength between the fixing assembly and the insulation portion.

[0025] In some embodiments, the connecting assembly further includes a top plate that covers the first portion of the "U"-shaped structure and extends to both sides to cover the upper surface of the second portion.

[0026] In some embodiments, an insulating patch is also embedded in the space formed between the top plate and the overlapping portion. The insulating patch fills the gap, reduces the heat conduction path, and disperses the external load.

[0027] Secondly, this application provides a method for installing a composite panel insulation system with an independent liquid tank, comprising at least the following steps:

[0028] S100: Prepare baffles, insulation, fixing components, joints, and protective layers according to the specifications of the ship's liquid tanks.

[0029] S200: Grid division of the outer surface of the ship's liquid tank and determination of the location of fixed components;

[0030] S300: Grind the outer surface of the ship's liquid tank at the fixed component positioning position, and install the embedded part. The angle between the embedded part and the outer surface of the ship's liquid tank is 87° to 93°.

[0031] S400: Install guide vanes on the outer surface of the ship's liquid tanks and make the embedded parts pass upward through the guide vanes;

[0032] S500: Install the insulation part within the defined range of the embedded part. The installation sequence of the insulation part is the inner insulation layer, the insulation block, the outer insulation layer and the protective layer. During the installation process, adhesive is used to connect each component, and the insulation part is fixed by fixing the components.

[0033] S600: Install branch joint plates at the joints of four adjacent insulation sections;

[0034] S700: Install strip joint plates at the joint between two adjacent insulation sections;

[0035] S800: A protective layer is installed on the surface of the joint, which covers the upper surface of the joint and overlaps with the upper surface of the insulation.

[0036] In some embodiments, the installation method of the composite panel insulation system is applicable to ships with liquid tank structures that are prismatic, square, irregular, or spherical.

[0037] Compared with the prior art, the technical solution provided in this application has the following beneficial effects:

[0038] This application provides a composite panel insulation system for independent liquid tanks. By optimizing the design of the prefabricated insulation panels, the design cycle is shortened, the installation process is simplified, costs are reduced, and the insulation effect is improved. The prefabricated insulation panels are fixed using fixing components, reducing the processing and installation difficulty of the insulation system, maintaining a good quality level, and improving system reliability. The composite panel insulation system for independent liquid tanks in this application has a reliable structure, high strength, and can provide good insulation performance in low-temperature environments. Attached Figure Description

[0039] Figure 1 The diagram shown is a cross-sectional schematic of the composite panel insulation system provided in this application.

[0040] Figure 2 The diagram shown is a schematic representation of the overall structure of the composite panel insulation system provided in this application.

[0041] Figure 3 The diagram shown is a structural assembly diagram of the insulation part provided in this application.

[0042] Figures 4a-4b The diagram shown is a structural schematic of the branch joint plate provided in this application.

[0043] Figures 5a-5c The diagram shown is a structural schematic of the strip joint plate provided in this application;

[0044] Figure 6 Display as Figure 1 A magnified view of a portion of the image;

[0045] Figure 7 The diagram shown is a structural schematic of the overlapping portion provided in this application;

[0046] Figure 8 The diagram shows a structural schematic of a ship liquid tank to which the composite panel insulation system provided in this application is applicable.

[0047] In the picture:

[0048] 100. Ship liquid tank; 200. Deflector plate; 300. Insulation section; 310. Inner insulation layer; 311. Inner first step; 312. Inner second step; 320. Outer insulation layer; 321. Outer first step; 322. Outer second step; 323. Outer third step; 330. Insulation block; 340. Protective layer; 350. Flexible insulation section; 400. Fixing component; 410. Embedded part; 420. Connecting component; 421. Overlap; 4211. First part; 4212. Second part; 422. Top plate; 423. Insulation patch; 430. Sleeve; 500. Joint; 510. Joint patch; 520. Branch joint plate; 530. Strip joint plate; 600. Joint protection layer. Detailed Implementation

[0049] In existing technologies, independent liquid tanks mostly employ panel or spray-coated insulation structures, but their construction processes, structural strength, and performance still have many significant drawbacks. For example, while traditional panel insulation systems have high strength, their design cycle is long, the joint installation process is complex, and the joint treatment between prefabricated insulation panels is prone to deterioration of insulation performance. Patent CN115158555A discloses a B-type liquid tank composite insulation system using a single-layer prefabricated panel covered with sprayed foam, which suffers from high construction difficulty and poor operability; while the double-layer insulation panel design of patent CN114458953A is difficult to meet the cold preservation requirements of ultra-low temperature (e.g., <-60℃) liquid cargo. In addition, existing technologies often rely on dedicated slotted structures for fixing components, resulting in high installation accuracy requirements, increased costs, and the insulation layer is prone to joint cracking under low-temperature deformation, affecting system reliability. While spray-applied insulation systems are convenient to install, their adhesive strength is insufficient, making them prone to detachment under conditions of large deformation in liquid tanks, and they are difficult to meet high-strength insulation requirements. Current technologies lack a solution that can balance structural strength and insulation performance while simplifying installation and reducing costs. Therefore, there is an urgent need to develop a new type of composite panel insulation system that addresses these technical bottlenecks by optimizing the prefabricated panel structure, joint treatment, and fixing component design.

[0050] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0051] For ease of description, spatial relation terms such as “below,” “under,” “lower than,” “below,” “above,” and “upper” may be used herein to describe the relationship between one element or feature shown in the accompanying drawings and other elements or features. It will be understood that these spatial relation terms are intended to include directions other than those depicted in the drawings for devices in use or operation. Furthermore, when a layer is referred to as being “between” two layers, it can be the only layer between the two layers, or there may be one or more layers in between. The term “between” as used herein includes both endpoint values.

[0052] In the context of this application, the structure described above the first feature may include embodiments in which the first and second features are formed in direct contact, or embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0053] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0054] Example 1:

[0055] See Figures 1 to 8 This embodiment provides a composite panel insulation system for an independent liquid tank, used for insulation of the ship's liquid tank 100. For ease of understanding and explanation, Figure 1 Only a portion of the insulation system located on the upper surface of the ship's liquid tank 100 is shown. The ship's liquid tank 100 can be any type of liquid tank in the prior art, such as... Figure 8 As shown, the prismatic, square, irregular, or spherical compartments are in various shapes. The composite panel insulation system is laid on the surface of the liquid tank to achieve overall insulation of the liquid tank and meet the cold preservation requirements of cryogenic liquid cargoes such as liquid ammonia, liquefied petroleum gas, liquefied natural gas, and ethane.

[0056] See Figure 1 and Figure 2 The guide plate 200 is laid on the entire outer surface of the ship's liquid tank 100, ensuring unobstructed flow of leaking liquid while effectively reducing gas convection within the space and minimizing heat loss. Furthermore, the guide plate 200 is fixed to the outer surface of the ship's liquid tank 100 by embedded parts 410, which also serve to install and fix the insulation part 300. Furthermore, the guide plate 200 is a multi-layered, perforated, elastic pressure-bearing structure, capable of withstanding liquid tank deformation caused by ship swaying, low-temperature shrinkage stress, and external loads. The perforations of the guide plate 200 guide the leaking liquid downwards along the perforation path, preventing localized liquid accumulation and freezing. Deformation at the perforation edges absorbs liquid tank deformation displacement, preventing structural cracking. Air within the perforations forms a localized insulation layer, reducing thermal conductivity. Compared to a solid single-layer structure, the multi-layered perforated design reduces weight while maintaining strength. The size of the perforations is determined according to the tank specifications and is not subject to numerical limitations; any perforation size that achieves one of the above effects is acceptable. In addition, the deflector 200 needs to be adaptable to the installation of complex curved surfaces of the liquid tank, such as spherical or diamond-shaped tanks. Furthermore, the deflector 200 uses a high-density, easily processed, and mechanically strong insulating foam material, which can be at least one of polyurethane, polystyrene, polyetheretherketone, polyimide, or polytetrafluoroethylene. Polyurethane is suitable for conventional low-temperature (above -60°C) scenarios and offers high cost-effectiveness; polyimide is suitable for extreme temperature alternating environments, combining insulation and structural strength requirements; and polytetrafluoroethylene is suitable for highly corrosive liquid cargo or ultra-low temperature environments.

[0057] See Figure 2 and Figure 3 The insulation section 300 has a multi-stage stepped tower structure. Several insulation sections 300 are arrayed and laid on the outer surface of the guide plate 200. The insulation sections 300 are installed and fixed by fixing components 400, and joints 500 are provided between adjacent insulation sections 300 to fill the space between the outer walls of the stepped insulation sections 300. Specifically, the insulation section 300 includes an inner insulation layer 310, an outer insulation layer 320, an insulation block 330, and a protective layer 340.

[0058] In an optional implementation, see [link to implementation details]. Figure 3 The inner insulation layer 310 has an internal cavity formed by an inner insulation layer base plate and an outer wall surrounding it; the outer wall of the inner insulation layer 310 includes at least two stepped structures; for example... Figure 3 The inner first step 311 and the inner second step 312 located above the inner first step 311 are shown. Further, the inner insulation layer 310 is made of rigid polyurethane foam and reinforced with glass fiber for mechanical properties.

[0059] In an optional implementation, see [link to implementation details]. Figure 3 The outer insulation layer 320 is stacked on top of the inner insulation layer 310 and has a hollow cavity formed by the outer wall of the outer insulation layer; the outer wall of the outer insulation layer 320 includes at least two stepped structures, for example... Figure 3 The outer first step 321, outer second step 322, and outer third step 323 are shown. When the outer insulation layer 320 is disposed on top of the inner insulation layer 310, the bottom surface of the outer insulation layer 320 is located in the top surface area of ​​the inner insulation layer 310, so that a multi-level stepped tower structure is formed from bottom to top from the inner insulation layer 310 to the outer insulation layer 320. Figure 1 The diagram illustrates the extreme case where the bottom edge of the outer first step 321 overlaps with the top edge of the inner second step 312. The staggered distribution of the outer step structure of the insulation layer 300 facilitates its installation and fixation, reduces temperature-induced deformation, and effectively prevents heat transfer, ensuring the internal temperature of the liquid tank. Furthermore, the outer insulation layer 320 is also made of rigid polyurethane foam with added glass fiber reinforcement for enhanced mechanical properties. It is understood that the inner insulation layer 310 and the outer insulation layer 320 may include one or more rigid insulation materials, which are commonly used insulation materials in the prior art; the inner insulation layer 310 and the outer insulation layer 320 may have more stepped structures to meet the insulation requirements of different sizes of ship liquid tanks, which will not be elaborated further here.

[0060] In an optional implementation, see [link to implementation details]. Figure 3The insulation block 330 penetrates the hollow cavity of the outer insulation layer 320 and is embedded in the internal cavity of the inner insulation layer 310. The insulation block 330 preferably has a cuboid structure and fits as closely as possible to the inner walls of the inner insulation layer 310 and the outer insulation layer 320 to reduce assembly gaps and improve the cold insulation effect. Furthermore, the insulation block 330 may be made of aerogel material or a composite vacuum plate.

[0061] In an optional implementation, see [link to implementation details]. Figure 3 A protective layer 340 is applied to the upper surface of the insulation block 330 and covers part of the outer insulation layer 320. The insulation block 330 is embedded in the inner insulation layer 310, utilizing its ultra-low thermal conductivity to block heat transfer. The outer insulation layer 320 and the protective layer 340 form a physical barrier to prevent external heat radiation. Through the nested structure of the inner / outer insulation layers and the insulation block, multi-layer insulation is achieved to meet the requirements of ultra-low temperature environments. Furthermore, the protective layer 340 is made of thermoplastic polyolefin flexible material (TPO), with a thickness between 1 mm and 2 mm, preferably 1.2 mm. TPO is made of polyolefin resins including but not limited to polypropylene (PP) or polyethylene (PE).

[0062] In an optional implementation, see [link to implementation details]. Figures 1 to 6 The joint between adjacent insulation portions 300 is filled with flexible insulation portion 350. The flexible insulation portion 350 fills the gap between the insulation portion 300 and the joint portion 500 to absorb deformation stress at the joint, prevent the gap from widening due to temperature difference, compensate for thermal expansion and contraction, and maintain insulation continuity. Furthermore, the flexible insulation portion 350 is made of melamine foam material.

[0063] See Figure 1 , Figure 6 and Figure 7 The fixing component 400 is disposed between the joints of adjacent insulation parts 300 and passes downward through the guide plate 200 to be fixed to the outer surface of the ship liquid tank 100, so as to install the guide plate 200 and the insulation part 300 on the outer surface of the ship liquid tank 100.

[0064] In an optional embodiment, the fixing assembly 400 includes an embedded part 410 that passes through the guide plate 200 and aligns with the joint of the insulation part 300, and a connecting assembly 420 that overlaps the bottom step of the outermost side wall of the insulation part 300. The connecting assembly 420 is connected to the embedded part 410 to fix the position of the insulation part 300. The fixing assembly is fixed to the surface of the liquid tank by the embedded part 410, improving the installation accuracy and peel strength of the insulation part. Further, the embedded part 410 can be a fixing stud.

[0065] In an optional implementation, see [link to implementation details]. Figure 6 and Figure 7The connecting component 420 includes an overlapping portion 421, which includes a first part 4211 in the shape of a concave shape and a second part 4212 located at the upper edge of the concave structure and overlapping the stepped structure of the insulation part 300. The first part 4211 is located between the joints of adjacent inner insulation layers 310. A connector is provided at the lower end of the first part 4211. The connector is connected to the lower embedded part 410, i.e., the fixing stud, through a sleeve 430. The lower end of the fixing stud is set at a predetermined position on the outer surface of the ship liquid tank 100 by arc welding. The lower end of the sleeve 430 is threaded to the upper end of the fixing stud. The bottom of the connecting component 420 is clamped and fixed by a hexagonal bolt, a washer and the upper end of the sleeve 430. The threaded connection design between the embedded part 410 and the sleeve 430 ensures that the fastener is subjected to uniform force and avoids detachment caused by stress concentration at the welding point of the embedded part 410; the folded edge of the lap joint is embedded in the step to form a snap-fit ​​structure, which enhances the bonding strength between the lap joint 421 and the insulation part 300.

[0066] In an optional embodiment, the connecting assembly 420 further includes a top plate 422, which covers the first part 4211 of the "U"-shaped structure and extends to both sides to cover the upper surface of the second part 4212. The top plate 422 provides excellent structural reinforcement and, together with the overlapping part 421, forms a receiving cavity. Furthermore, an insulating patch 423 is embedded within the receiving cavity formed between the top plate 422 and the overlapping part 421. The insulating patch fills the gaps, reduces the heat conduction path, and disperses external loads. Furthermore, the insulating patch 423 is made of rigid polyurethane foam, which better restricts the deformation of the connecting assembly 420 towards the center surface under stress, while maintaining the performance of the insulation system.

[0067] See Figure 1 As shown in Figures 4 and 5, the joint portion 500 is located between the insulation portions 300. The joint portion 500 includes at least a branch joint plate 520 and a strip joint plate 530. Both the branch joint plate 520 and the strip joint plate 530 are configured as multi-layer structural panels, such as a composite laminate of rigid insulation material panels and flexible insulation material panels. The multi-layer panels are bonded together by a low-temperature adhesive.

[0068] Figures 5a to 5c A structural diagram of a strip joint plate 530 is shown. The strip joint plate 530 is disposed at the joint between two adjacent insulation parts 300. The length of the strip joint plate 530 is not greater than the side length of the insulation part 300, and its width is greater than the distance between the adjacent top edges of the two adjacent insulation parts 300, so that the two ends of the strip joint plate 530 can be stably attached to the insulation part 300.

[0069] Figure 4a and Figure 4bThe diagram shows the structure of the branch joint plate 520, which is disposed at the central joint of several adjacent insulation sections 300. Branches of the branch joint plate 520 extend from the center to the gap between two adjacent insulation sections 300 and abut against the strip joint plate 530. It is understood that the branches of the branch joint plate 520 can also extend to cover the surface of the strip joint plate 530. For insulation sections 300 with rectangular or square top surfaces, the branch joint plate 520 requires four branches, i.e., a cross-shaped branch joint plate 520, which covers the central joint of four insulation sections 300. The strip joint plate 530 fills the linear joints, forming a continuous insulation barrier and reducing heat transfer through the joints. The combined design of the branch joint plate 530 and the strip joint plate 520 effectively fills multi-directional joints, ensuring insulation performance.

[0070] The seam portion 500 also includes a seam patch 510, see [link / reference] Figure 2 As shown in Figures 4 and 5, the joint patch 510 fills the space formed by the insulation part 300, the branch joint plate 530 and the strip joint plate 520. The material of the joint patch 510 can be the same as that of the heat patch 423 to improve the insulation and cold preservation effect of the system.

[0071] In an optional embodiment, the insulation system provided in this application further includes a joint protection layer 600, which covers the upper surface of the joint portion 500 and partially overlaps with the upper surface of the insulation portion 300. The overlapping and covering of the joint protection layer 600 and the insulation portion 300 enhances the joint sealing performance and improves the system durability. Furthermore, the joint protection layer 600 and the protective layer 340 are both made of thermoplastic polyolefin material, with a thickness between 1 mm and 2 mm, preferably 1.2 mm.

[0072] It should be noted that in the thermal insulation system provided in this embodiment, the gaps between the various plates or components that need to be connected are all bonded with low-temperature adhesives, such as the gaps between the protective layer 340 and the thermal insulation block 330, the gaps between the thermal insulation block 330 and the inner thermal insulation layer 310 and the outer thermal insulation layer 320, the gaps between the inner thermal insulation layer 310 and the outer thermal insulation layer 320, and the gaps between the overlap 421 and the thermal insulation patch 423.

[0073] In the thermal insulation system provided in this embodiment, the rigid thermal insulation materials include polyurethane foam, polystyrene foam, polyethylene and phenolic foam. The rigid thermal insulation materials can be reinforced with glass fiber, hollow glass microspheres, etc., according to actual needs.

[0074] In the thermal insulation system provided in this embodiment, the flexible thermal insulation materials include polyurethane foam, melamine foam, ethylene-vinyl acetate copolymer (EVA) foam, polyethylene (PE) foam, and polypropylene (PP) foam.

[0075] Example 2:

[0076] This embodiment provides a method for installing a composite panel insulation system for an independent liquid tank, which is used to install the composite panel insulation system provided in Embodiment 1. It is applicable to ships with liquid tank structures that are prismatic, square, irregular, or spherical. The steps of the installation method are described in detail below.

[0077] S100: Prepare a flow deflector 200, insulation 300, fixing components 400, joint 500, and joint protection layer 600 according to the specifications of the ship's liquid tank 100.

[0078] S200: The outer surface of the ship's liquid tank 100 is divided into grids and the positions of the fixed components 400 are determined, especially the positions of the embedded parts 410.

[0079] S300: Grind the outer surface of the ship's liquid tank 100 at the positioning position of the fixed component 400, and install the embedded part 410. Specifically, the grinding diameter is within the range of 20mm to 30mm from the embedded part 410, with 30mm being preferred. The coaxiality tolerance between the actual welding position of the embedded part 410 and its positioning position is 3mm. The angle between the installed embedded part 410 and the outer surface of the ship's liquid tank 100 is 87° to 93°, with a perpendicular angle being preferred. The embedded part 410 is installed by welding.

[0080] S400: A guide plate 200 is laid on the outer surface of the ship's liquid tank 100, and the embedded part 410 passes upward through the guide plate 200.

[0081] S500: Install the insulation part 300 within the defined range of the embedded part 410. The installation sequence of the insulation part 300 is the inner insulation layer 310, the insulation block 330, the outer insulation layer 320 and the protective layer 340. During the installation process, adhesive is used to connect each component, and the insulation part 300 is fixed by the fixing component 400.

[0082] S600: Install branch joint plates 520 at the joints of four adjacent insulation sections 300;

[0083] S700: Install strip joint plate 530 at the joint between two adjacent insulation sections 300;

[0084] S800: A joint protection layer 600 is installed on the surface of the joint portion 500. The joint protection layer 600 covers the upper surface of the joint portion 500 and partially overlaps with the upper surface of the insulation portion 300. The joint protection layer 600 is consistent with the protective layer 340 on the surface of the insulation portion 300, and is a 1.2mm thick TPO. The overlap width between the joint protection layer 600 and the protective layers 340 on both sides is not less than 20mm, preferably 30mm. The overlap length of the joint protection layer 600 at the two joints is not less than 200mm.

[0085] Compared to traditional insulation system designs, the composite panel insulation system and installation method for independent liquid tanks disclosed in this application offer numerous advantages. Utilizing fixed components eliminates the need for additional slotting design, simplifying the product structure, shortening the design cycle, streamlining the installation process, reducing costs, and enabling one-time installation and fixation, avoiding the need for multiple adjustments to the installation environment. The joint treatment scheme proposed in this application results in a simple and easy installation process, ensuring the stability of construction quality and the reliability of the insulation system. Therefore, the technical solution provided in this application has high industrial applicability due to its effective overcoming of various shortcomings in the prior art.

[0086] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A composite panel insulation system for an independent liquid tank, used for insulation of a ship's liquid tank (100), characterized in that, include: A deflector plate (200) is installed on the entire outer surface of the ship's liquid tank (100); The heat insulation section (300) comprises a multi-level stepped tower structure formed by an inner heat insulation layer (310), an outer heat insulation layer (320), a heat insulation block (330), and a protective layer (340), and a plurality of the heat insulation sections (300) are arrayed and laid on the outer surface of the guide plate (200); wherein, The inner insulation layer (310) has an internal cavity formed by the inner insulation layer bottom plate and the outer wall surrounding it; The outer insulation layer (320) is stacked on the inner insulation layer (310) and has a hollow cavity formed by the outer side wall of the outer insulation layer. The insulation block (330) penetrates the hollow cavity of the outer insulation layer (320) and is embedded in the internal cavity of the inner insulation layer (310); The protective layer (340) is applied to the upper surface of the insulation block (330) and covers part of the outer insulation layer (320). A fixing assembly (400) is disposed between the joints of adjacent insulation portions (300) to install the guide plate (200) and the insulation portions (300) on the outer surface of the ship's liquid tank (100).

2. The composite panel insulation system for independent liquid tanks according to claim 1, characterized in that, It also includes a joint (500) located between the insulation portions (300), the joint (500) comprising at least a branch joint plate (520) and a strip joint plate (530); wherein, The strip joint plate (530) is disposed at the joint between two adjacent insulation parts (300); The branch joint plate (520) is disposed at the central joint of several adjacent insulation parts (300), and the branches of the branch joint plate (520) extend from the center to the gap between two adjacent insulation parts (300) and are connected to the strip joint plate (530).

3. The composite panel insulation system for independent liquid tanks according to claim 2, characterized in that, It also includes a seam protection layer (600) that covers the upper surface of the seam portion (500) and overlaps with the upper surface portion of the insulation portion (300).

4. The composite panel insulation system for independent liquid tanks according to claim 1, characterized in that, The deflector plate (200) is a multi-layered open-pore elastic pressure-bearing structure, including at least one high-density heat-insulating foam material selected from polyurethane, polyimide or polytetrafluoroethylene. The deflector plate (200) is installed on the outer surface of the ship's liquid tank (100) by a fixing component (400).

5. The composite panel insulation system for independent liquid tanks according to claim 1, characterized in that, The outer wall of the inner insulation layer (310) includes at least two stepped structures; The outer wall of the outer insulation layer (320) includes at least two stepped structures, and the bottom surface of the outer insulation layer (320) is located in the top surface area of ​​the inner insulation layer (310), so that the inner insulation layer (310) to the outer insulation layer (320) form a multi-step tower structure from bottom to top.

6. The composite panel insulation system for independent liquid tanks according to claim 3, characterized in that, The joint between adjacent insulation portions (300) is filled with flexible insulation portions (350), which fill the gap between the insulation portions (300) and the joint portions (500).

7. The composite panel insulation system for independent liquid tanks according to claim 1, characterized in that, The fixing component (400) is disposed in the joint between two adjacent insulation parts (300) and passes downward through the guide plate (200) to be fixed to the outer surface of the ship liquid tank (100); The fixing component (400) includes an embedded part (410) that passes through the guide plate (200) and is aligned with the joint of the insulation part (300), and a connecting component (420) that overlaps the bottom step of the outer side wall of the insulation part (300). The connecting component (420) is connected to the embedded part (410) to fix the position of the insulation part (300).

8. The composite panel insulation system for independent liquid tanks according to claim 7, characterized in that, The connecting component (420) includes an overlapping portion (421), which includes a first part (4211) in the shape of a concave shape, and a second part (4212) of a stepped structure located at both ends of the upper edge of the concave structure and overlapping the heat insulation part (300); wherein, the first part (4211) is located between the joints of adjacent inner heat insulation layers (310), and a connector is provided at the lower end of the first part (4211), which is connected to the embedded part (410) below through a sleeve.

9. The composite panel insulation system for independent liquid tanks according to claim 8, characterized in that, The connecting assembly (420) also includes a top plate (422) that covers the first part (4211) of the "U"-shaped structure and extends to both sides to cover the upper surface of the second part (4212).

10. The composite panel insulation system for independent liquid tanks according to claim 9, characterized in that, Insulating patch (423) is also embedded in the space formed between the top plate (422) and the overlapping part (421).

11. A method for installing a composite panel insulation system with an independent liquid tank, characterized in that, At least the following steps are included: S100: Prepare the deflector (200), insulation (300), fixing components (400), joint (500) and joint protection layer (600) according to the specifications of the ship's liquid tank (100). S200: Grid division of the outer surface of the ship's liquid tank (100) and determination of the position of the fixing components (400); S300: Grind the outer surface of the ship's liquid tank (100) at the positioning position of the fixed component (400), and install the embedded part (410). The angle between the embedded part (410) and the outer surface of the ship's liquid tank (100) is 87°~93°. S400: A guide plate (200) is laid on the outer surface of the ship's liquid tank (100), and the embedded part (410) passes upward through the guide plate (200). S500: Install the insulation part (300) within the defined range of the embedded part (410). The installation sequence of the insulation part (300) is as follows: inner insulation layer (310), insulation block (330), outer insulation layer (320) and protective layer (340). During the installation process, adhesive is used to connect each component, and the insulation part (300) is fixed by fixing component (400). The insulation block (330) penetrates the hollow cavity of the outer insulation layer (320) and is embedded in the internal cavity of the inner insulation layer (310). S600: Install branch joint plates (520) at the joints of four adjacent insulation sections (300). S700: Install strip joint plate (530) at the joint of two adjacent insulation sections (300). S800: A joint protection layer (600) is installed on the surface of the joint (500), the joint protection layer (600) covers the upper surface of the joint (500) and overlaps with the upper surface of the insulation part (300).

12. The installation method of the composite panel insulation system for independent liquid tanks according to claim 11, characterized in that, The installation method of the composite panel insulation system is applicable to ships with liquid tank structures that are prismatic, square, irregular, or spherical.

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