A liquid cargo tank insulation system

Abstract

This application provides a liquid cargo tank insulation system, including prefabricated insulation panels, fixing components, and joint insulation panels. The prefabricated insulation panels are laid on the outer surface of the liquid cargo tank and assembled to form a panel-type insulation layer. The prefabricated insulation panel includes a base layer and a surface layer attached to the base layer; the sidewall of the surface layer does not extend beyond the sidewall of the base layer to form a first stepped surface at the edge of the base layer. The sidewall of the surface layer has an upwardly inclined surface. Adjacent prefabricated insulation panels are connected by a first joint between adjacent base layers and a second joint between adjacent surface layers. The fixing component is disposed at the first joint, with one end fixed to the outer surface of the liquid cargo tank and the other end pressed against the first stepped surface of the adjacent base layer. The joint insulation panel is filled in the second joint, and its sidewall has at least one counter-inclined surface that matches the inclined surface of the surface layer sidewall. This application can improve the uniformity of the installation gap between the two sidewalls of the joint insulation panel and the corresponding prefabricated insulation panel. When subsequently affected by thermal expansion and contraction, the gap changes on both sides are relatively consistent, reducing the risk of cracking and ensuring the insulation effect.

Description

Technical Field

[0001] This application relates to the field of liquid cargo tank insulation design technology, and more specifically, to a liquid cargo tank insulation system. Background Technology

[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 Type B cargo tanks have long been used on ships transporting liquefied natural gas, ethane, and other liquids due to their advantages such as large space, no limitation on cargo volume, low daily evaporation rate, and ease of installation and maintenance. Freestanding Type B cargo tanks have a unique structure, and their insulation system differs from the relatively mature membrane-type cargo tanks. The structure of freestanding Type B cargo tanks is more complex, and they deform significantly during operation. Therefore, a high-strength plate insulation system, i.e., prefabricated insulation panels, needs to be installed on the surface of the cargo tank.

[0003] In existing technologies, panel insulation systems consist of multiple prefabricated insulation panels assembled together. The gaps between adjacent prefabricated insulation panels are filled with insulation blocks. However, when the insulation blocks are installed into the gaps between the prefabricated insulation panels, the installation gap between the two sides of the insulation block and the corresponding prefabricated insulation panel is not uniformly controlled. This can easily lead to inconsistent effects of thermal expansion and contraction later on, resulting in one side being squeezed and the other side being loose. Consequently, uneven cracks appear between the insulation block and the prefabricated insulation panel, affecting the insulation effect and reducing the service life. Summary of the Invention

[0004] The purpose of this application is to provide a liquid cargo tank insulation system that can improve the uniformity of the installation gap between the two side walls of the joint insulation panel and the corresponding prefabricated insulation panel, so that when affected by thermal expansion and contraction, the gap change at the two side walls of the joint insulation panel is relatively consistent, reducing the risk of cracking, ensuring the insulation effect, and helping to extend the service life.

[0005] This application provides a liquid cargo tank insulation system, including prefabricated insulation panels, fixing components, and joint insulation panels.

[0006] The system comprises several prefabricated insulation panels laid on the outer surface of the cargo tank to form a panel-type insulation layer. Each prefabricated insulation panel includes a base layer and a surface layer attached to the upper surface of the base layer. The sidewall of the surface layer is a predetermined distance from the sidewall of the base layer to form a first stepped surface at the edge of the base layer. At least a portion of the height area of ​​the sidewall of the surface layer is provided with an upward-facing inclined surface. Adjacent prefabricated insulation panels include a first joint between adjacent base layers and a second joint between adjacent surface layers. Several fixing components are disposed in the first joint of adjacent prefabricated insulation panels, with one end fixed to the outer surface of the cargo tank and the other end pressed against the first stepped surface of the adjacent base layer. A joint insulation panel is sealed and filled in the second joint of the prefabricated insulation panels; and the sidewall of the joint insulation panel is provided with at least a reverse inclined surface that matches the inclined surface of the surface layer sidewall.

[0007] In one feasible solution, the entire side of the surface layer is set as an inclined surface, and the entire sidewall of the joint insulation panel is set as a reverse inclined surface.

[0008] In one feasible embodiment, in the prefabricated insulation panel, the sidewall of the surface layer near the base layer is provided with an upward-facing first inclined surface; the bottom sidewall of the joint insulation panel is provided with a first anti-inclined surface that cooperates with the first inclined surface.

[0009] In one feasible embodiment, the top sidewall of the surface layer of the prefabricated insulation panel has an upward-facing second inclined surface; the top sidewall of the joint insulation panel has a second anti-inclined surface that cooperates with the second inclined surface.

[0010] In one feasible embodiment, in the prefabricated insulation panel, the sidewall of the surface layer near the base layer is provided with an upward-facing first inclined surface, and the top sidewall of the surface layer is provided with an upward-facing second inclined surface; wherein, the side closer to the surface layer side is the front end, and the side farther from the surface layer side is the rear end, and the front end of the second inclined surface does not extend beyond the rear end of the first inclined surface; the bottom sidewall of the joint insulation panel is provided with a first anti-inclined surface that cooperates with the first inclined surface, and the top sidewall of the joint insulation panel is provided with a second anti-inclined surface that cooperates with the second inclined surface.

[0011] In one feasible solution, the sidewall of the surface layer has at least one upwardly exposed second step surface, and the sidewall of the joint insulation board has a reverse step surface that matches the second step surface.

[0012] In one feasible embodiment, the surface layer comprises at least two overlapping insulating layers.

[0013] In one feasible solution, a reinforcing layer is provided between adjacent insulation layers and between the surface layer and the base layer, and the reinforcing layer has a planar grid structure.

[0014] In one feasible solution, the surface layer comprises n layers of insulation layers stacked on top of each other, with the bottommost insulation layer being the first layer and the topmost insulation layer being the nth layer, where n≥2. The side of the first insulation layer is configured as an upward-facing first inclined surface, and the side of the nth insulation layer is configured as an upward-facing second inclined surface. The front end is defined as the side closer to the surface layer side, and the rear end is defined as the side farther from the surface layer side. The front end of the second inclined surface does not extend beyond the rear end of the first inclined surface. The sidewall of the joint insulation board is provided with a first anti-inclined surface and a second anti-inclined surface that respectively cooperate with the first and second inclined surfaces.

[0015] In one feasible scheme, the surface layer contains n≥3 insulation layers, and the adjacent insulation layers are the i-th insulation layer and the (i+1)-th insulation layer, 1≤i≤n-1, where i is a positive integer; wherein the edge of the (i+1)-th insulation layer does not exceed the edge of the i-th insulation layer; and at least one of the insulation layers from the second layer to the (n-1)-th insulation layer has an upwardly exposed second step surface on its edge, and the sidewall of the joint insulation board has a reverse step surface that matches the second step surface.

[0016] In one feasible embodiment, at least one of the second to (n-1)th insulation layers in the surface layer has an upward-facing third inclined surface on its side, and the sidewall of the joint insulation board has a third anti-inclined surface that cooperates with the third inclined surface.

[0017] In one feasible embodiment, the joint insulation panel includes an insulation body and an elastic insulation layer covering the surface of the insulation body.

[0018] In one feasible embodiment, the fixing assembly includes an embedded part, a fixing rod, a fixing plate, and fasteners. The embedded part is pre-embedded on the outer surface of the liquid cargo tank, the bottom end of the fixing rod is connected to the embedded part, and the fixing rod extends outward along the first joint between the base layers. The fixing plate has a structure with a central concave structure and upper opposing folded edges. The concave structure is inserted into the first joint between adjacent base layers, and the upper opposing folded edges are respectively covered on the adjacent first step surfaces at the joint between adjacent base layers. The fastener passes through the central concave structure of the fixing plate and connects to the top of the fixing rod to press the fixing plate tightly onto the first step surface.

[0019] In one feasible embodiment, the fixing assembly further includes an elastic bushing and an insulating filler; the elastic bushing is fitted onto the outer wall of the fixing rod, and the insulating filler is filled into the central recessed structure of the fixing plate.

[0020] In one feasible solution, the surface of the liquid cargo tank is provided with several raised structures, and prefabricated insulation panels are laid on the raised structures, so that a leakage channel is formed between the prefabricated insulation panels and the outer wall of the liquid cargo tank.

[0021] In one feasible embodiment, the cargo tank insulation system also includes protective layers laid on the upper surfaces of prefabricated insulation panels and joint insulation panels, with the edges of adjacent protective layers overlapping.

[0022] In one feasible embodiment, the liquid cargo tank insulation system also includes a liquid-tight layer covering the joint between adjacent base layers, covering the fixing components, and being pressed against the joint insulation panel.

[0023] Compared with the prior art, the beneficial effects of this application include at least the following: During installation, the liquid cargo tank insulation system of this application involves laying several prefabricated insulation panels on the outer surface of the liquid cargo tank, then installing fixing components in the first joint between adjacent base layers of adjacent prefabricated insulation panels to fix the prefabricated insulation panels, and then inserting joint insulation panels in the second joint between adjacent surface layers of adjacent prefabricated insulation panels. Because the surface sidewalls are provided with inclined surfaces, and the sidewalls of the joint insulation panels are provided with anti-inclined surfaces that cooperate with the inclined surfaces of the surface sidewalls, even if there is a certain misalignment between the joint insulation panels and adjacent prefabricated insulation panels, the cooperation of the inclined and anti-inclined surfaces can still guide the joint insulation panels into the correct position. Meanwhile, due to the coordinated guidance of the inclined and anti-inclined surfaces, the joint insulation board can automatically balance the gap between the joint insulation board and the adjacent precast insulation board as it enters the joint. This helps to control the uniformity of the installation gap between the two side walls of the joint insulation board and the corresponding precast insulation board, so that the gap changes at the two side walls of the joint insulation board are relatively consistent when affected by thermal expansion and contraction. This reduces the risk of cracking, ensures the insulation effect, and helps to extend the service life. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a partial structural diagram of a liquid cargo tank insulation system shown in an embodiment of this application.

[0026] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0027] Figure 3 This is an exploded structural diagram of a fixing component shown in an embodiment of this application.

[0028] Figure 4 The embodiments of this application show a top view of multiple prefabricated insulation panels spliced ​​together.

[0029] Figure 5 This is a schematic diagram of the first type of caulking assembly structure shown in the application embodiment.

[0030] Figure 6a This is a schematic diagram of a second type of caulking assembly structure shown in the application embodiment.

[0031] Figure 6b This is a schematic diagram of the third type of caulking assembly structure shown in the application embodiment.

[0032] Figure 7a This is a schematic diagram of the fourth type of caulking assembly structure shown in the application embodiment.

[0033] Figure 7b This is a schematic diagram of the fifth type of caulking assembly structure shown in the application embodiment.

[0034] Figure 8a This is a schematic diagram of the sixth type of caulking assembly structure shown in the application embodiment.

[0035] Figure 8b This is a schematic diagram of the seventh type of caulking assembly structure shown in the application embodiment.

[0036] Figure 9 This is a schematic diagram of the eighth type of caulking assembly structure shown in the application embodiment.

[0037] In the diagram: 1. Precast insulation panel; 101. Base layer; 102. Surface layer; 11. Insulation layer; 12. Reinforcing layer; T1. First step surface; T2. Second step surface; F. Reverse step surface; M0. Inclined surface; M1. First inclined surface; M2. Second inclined surface; M3. Third inclined surface; N0. Reverse inclined surface; N1. First reverse inclined surface; N2. Second reverse inclined surface; N3. Third reverse inclined surface; 2. Fixing component; 21. Embedded part; 22. Fixing rod; 23. Elastic bushing; 24. Fixing piece; 25. Fastener; 26. Insulation filler block; 27. Filler layer; 3. Joint insulation panel; 31. Insulation body; 32. Elastic insulation layer; 4. Protective layer; 5. Liquid cargo tank; 51. Protruding structure; 52. Leakage channel; 6. Liquid tight layer. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0040] like Figure 1 , Figure 2 and Figure 4 As shown in the figure, this application provides a liquid cargo tank insulation system, including a prefabricated insulation panel 1, a fixing component 2, and a joint insulation panel 3.

[0041] In this process, a number of prefabricated insulation panels 1 are laid on the outer surface of the liquid cargo tank 5 and assembled to form a panel-type insulation layer. The prefabricated insulation panel 1 includes a base layer 101 and a surface layer 102 attached to the upper surface of the base layer 101; the sidewall of the surface layer 102 is at a predetermined distance from the sidewall of the base layer 101 to form a first stepped surface T1 on the edge surface of the base layer 101; at least a portion of the height area of ​​the sidewall of the surface layer 102 is provided with an upward inclined surface M0; wherein, there is a first joint between adjacent base layers 101 and a second joint between adjacent surface layers 102 between adjacent prefabricated insulation panels 1.

[0042] Several fixing components 2 are disposed in the first joint of adjacent prefabricated insulation panels 1, with one end of the fixing component 2 fixed to the outer surface of the liquid cargo tank 5 and the other end pressed against the first step surface T1 of the adjacent base layer 101. The joint insulation panel 3 is sealed and filled in the second joint of the prefabricated insulation panel 1; and the side wall of the joint insulation panel 3 is provided with at least a reverse inclined surface N0 that matches the inclined surface M0 of the side wall of the surface layer 102.

[0043] In this embodiment, during installation of the liquid cargo tank insulation system, several prefabricated insulation panels 1 are laid on the outer surface of the liquid cargo tank 5. Then, fixing components 2 are installed in the first joint between adjacent base layers 101 of adjacent prefabricated insulation panels 1 to fix the prefabricated insulation panels 1. After that, joint insulation panels 3 are installed in the second joint between adjacent surface layers 102 of adjacent prefabricated insulation panels 1. Since the sidewall of the surface layer 102 is provided with an inclined surface M0, and the sidewall of the joint insulation panel 3 is provided with a reverse inclined surface N0 that cooperates with the inclined surface M0 of the sidewall of the surface layer 102, even if there is a certain misalignment between the joint insulation panel 3 and the adjacent prefabricated insulation panel 1, the joint insulation panel 3 can still be guided into the correct position by means of the cooperation between the inclined surface M0 and the reverse inclined surface N0. Meanwhile, due to the guiding cooperation of the inclined surface M0 and the anti-inclined surface N0, the joint insulation board 3 can automatically balance the gap between the joint insulation board 3 and the adjacent prefabricated insulation board 1 as it continuously enters the joint. This helps to control the uniformity of the installation gap between the two side walls of the joint insulation board 3 and the corresponding prefabricated insulation board 1, so that when affected by thermal expansion and contraction, the gap change at the two side walls of the joint insulation board 3 is relatively consistent, reducing the risk of cracking, ensuring the insulation effect, and helping to extend the service life.

[0044] In one embodiment, it is preferable that the sidewall structures of the prefabricated insulation panels 1 are identical, so that the joints formed between adjacent prefabricated insulation panels 1 are symmetrical about the axis of the fixing component 2. Simultaneously, the corresponding joint insulation panels 3 are also symmetrical about the axis of the fixing component 2. Therefore, after the joint insulation panels 3 are installed with the joints filled under the guidance of the inclined surface M0 and the anti-inclined surface N0, the installation gaps between the two sidewalls of the joint insulation panels 3 and the corresponding prefabricated insulation panels 1 remain essentially identical. This ensures more consistent changes in response to thermal expansion and contraction, resulting in better insulation performance.

[0045] In one embodiment, such as Figure 2 and Figure 3 As shown, the fixing assembly 2 includes an embedded part 21, a fixing rod 22, a fixing plate 24, and a fastener 25. The embedded part 21 is pre-installed on the outer surface of the liquid cargo tank 5. The bottom end of the fixing rod 22 is connected to the embedded part 21, and the fixing rod 22 extends outward along the first joint between the base layers 101. The fixing plate 24 has a structure with a concave structure in the middle and opposing upper folded edges. The concave structure is inserted into the first joint between adjacent base layers 101, and the opposing upper folded edges are respectively covered on the adjacent first step surfaces at the joint of adjacent base layers 101. The fastener 25 passes through the concave structure in the middle of the fixing plate 24 and is connected to the top end of the fixing rod 22 to press the fixing plate 24 tightly onto the first step surface T1.

[0046] The embedded part 21 can be a welded bolt embedded in the surface of the liquid cargo tank 5, and the fastener 25 can be a standard bolt. The two ends of the fixing rod 22 can be provided with internal threaded holes for threaded engagement with the embedded part 21 and the fastener 25, respectively. The fixing rod 22 can be made of a material with low thermal conductivity, including but not limited to wood, plastics, and composite materials, such as wood and Teflon plastics, thereby reducing heat transmission along the axial direction of the fixing rod 22. The fixing plate 24 can be made of low-temperature resistant materials, including but not limited to metals, plastics, and composite materials.

[0047] In one embodiment, such as Figure 2 and Figure 3 As shown, the fixing component 2 may further include an elastic bushing 23 and an insulating filler block 26. The elastic bushing 23 is fitted onto the outer wall of the fixing rod 22, and the insulating filler block 26 is filled into the recessed structure in the middle of the fixing plate 24. The materials of the elastic bushing 23 and the insulating filler block 26 include, but are not limited to, glass wool, elastic cotton, aerogel felt, polyethylene plastic, etc., and their function is to fill gaps and maintain good thermal insulation effect. In addition, a filler layer 27 may be provided between the insulating filler block 26 and the fastener 25, the materials of which include, but are not limited to, low-temperature adhesive, silicone, epoxy resin adhesive, etc., to further increase the sealing and thermal insulation effect.

[0048] In one embodiment, such as Figure 1 and Figure 2 As shown, the surface of the liquid cargo tank 5 can be provided with several protruding structures 51. The prefabricated insulation board 1 is placed on the protruding structures 51, so that a leakage channel 52 is formed between the prefabricated insulation board 1 and the outer wall of the liquid cargo tank 5. This facilitates the flow of the low-temperature liquid leaking from the liquid cargo tank 5 along the leakage channel 52 to the bottom of the liquid cargo tank 5, so as not to accumulate in the prefabricated insulation board 1.

[0049] In one embodiment, such as Figure 1 and Figure 2 As shown, the liquid cargo tank insulation system also includes a protective layer 4, laid on the upper surface of the prefabricated insulation panel 1 and the joint insulation panel 3, with the edges of adjacent protective layers 4 overlapping. The protective layer 4 has a preset strength and a thickness of 1-2 mm. The materials of the protective layer 4 include polymer materials (such as thermoplastic polyolefin elastomer (TPO), which is made of polyolefin resins including but not limited to polypropylene (PP) or polyethylene (PE), fiberglass materials, and metal materials, etc. It can provide good mechanical protection and anti-aging protection.

[0050] In one embodiment, such as Figure 2As shown, the liquid cargo tank insulation system may also include a liquid-tight layer 6, which covers the joint of adjacent base layers 101, covers the fixing components 2, and is pressed tightly by the joint insulation panel 3. The liquid-tight layer 6 may include fiberglass aluminum foil, carbon fiber aluminum foil, and composite materials, and its function is to form a liquid-tight layer on the joint, thereby acting as a splash barrier.

[0051] In one embodiment, such as Figures 5 to 9 As shown, the surface layer 102 may consist of only a single layer of insulation layer 11, or it may include at least two layers of insulation layer 11 stacked together. Similarly, the base layer 101 may consist of only a single layer of insulation layer 11, or it may include at least two layers of insulation layer 11 stacked together. A reinforcing layer 12 is provided between adjacent insulation layers 11 and between the surface layer 102 and the base layer 101. The reinforcing layer 12 has a planar mesh structure. The main material of the insulation layer 11 includes, but is not limited to, polyurethane foam, polystyrene foam, polyethylene plastic, and phenolic foam, and it may be reinforced with glass fiber, hollow glass microspheres, etc. The reinforcing layer 12 may be composed of one or more mesh materials, such as glass fiber mesh, carbon fiber mesh, and metal mesh. The insulation layer 11 and the reinforcing layer 12 can be bonded together with low-temperature adhesive.

[0052] In one embodiment, such as Figure 2 As shown, the joint insulation board 3 may include an insulation body 31 and an elastic insulation layer 32 covering the surface of the insulation body 31. The insulation body 31 may be a multi-layered structure, a single integral insulation structure, or it may be formed by alternating layers of insulation and reinforcing layers, similar to the layer structure of the prefabricated insulation board 1. The surface of the insulation body 31 is covered with the elastic insulation layer 32 to form an integral structure, which is used to increase the sealing effect of the joint. The elastic insulation layer 32 may be made of materials including but not limited to glass wool, elastic cotton, aerogel felt, polyethylene plastic, etc.

[0053] In one embodiment, such as Figure 5 As shown, the entire side of the surface layer 102 can be set as an inclined surface M0, and the entire sidewall of the joint insulation board 3 can be set as an anti-inclined surface N0.

[0054] In one embodiment, such as Figure 6a As shown, in the prefabricated insulation panel 1, the surface layer 102 contains only one insulation layer 11, and the sidewall of the surface layer 102 near the base layer 101 is provided with an upward-facing first inclined surface M1. The bottom sidewall of the joint insulation panel 3 is provided with a first anti-inclined surface N1 that cooperates with the first inclined surface M1.

[0055] In one embodiment, such as Figure 6bAs shown, in the prefabricated insulation panel 1, the surface layer 102 includes two insulation layers 11. The sidewall of the insulation layer 11 near the base layer 101 of the surface layer 102 is set as an upward-facing first inclined surface M1. The bottom sidewall of the joint insulation panel 3 is provided with a first anti-inclined surface N1 that cooperates with the first inclined surface M1.

[0056] In one embodiment, such as Figure 7a As shown, in the prefabricated insulation panel 1, the surface layer 102 contains only one insulation layer 11, and the top sidewall of the surface layer 102 is provided with an upward-facing second inclined surface M2. The top sidewall of the joint insulation panel 3 is provided with a second anti-inclined surface N2 that cooperates with the second inclined surface M2.

[0057] In one embodiment, such as Figure 7b As shown, in the prefabricated insulation board 1, the surface layer 102 includes two insulation layers 11. The sidewall of the outermost insulation layer 11 of the surface layer 102 is set as an upward-facing second inclined surface M2, and the top sidewall of the joint insulation board 3 is set as a second anti-inclined surface N2 that cooperates with the second inclined surface M2.

[0058] In one embodiment, such as Figure 8a As shown, in the prefabricated insulation panel 1, the surface layer 102 contains only one insulation layer 11. The sidewall of the surface layer 102 near the base layer 101 is provided with an upward-facing first inclined surface M1, and the top sidewall of the surface layer 102 is provided with an upward-facing second inclined surface M2. The front end is the side closest to the surface layer 102, and the rear end is the side furthest from the surface layer 102. The front end of the second inclined surface M2 does not extend beyond the rear end of the first inclined surface M1. The bottom sidewall of the joint insulation panel 3 is provided with a first reverse inclined surface N1 that mates with the first inclined surface M1, and the top sidewall of the joint insulation panel 3 is provided with a second reverse inclined surface N2 that mates with the second inclined surface M2.

[0059] In one embodiment, such as Figure 8a As shown, at least one upward-facing exposed second step surface T2 can be provided on the side wall of the surface layer 102, and the side wall of the joint insulation board 3 is provided with a reverse step surface F that cooperates with the second step surface T2.

[0060] In one embodiment, the surface layer 102 comprises n layers of insulation layers 11 stacked on top of each other, with the bottommost insulation layer 11 being the first layer and the topmost insulation layer 11 being the nth layer, where n ≥ 2. The side of the first insulation layer 11 is configured as an upward-facing first inclined surface M1, and the side of the nth insulation layer 11 is configured as an upward-facing second inclined surface M2. The front end is defined as the side closer to the surface layer 102, and the rear end as the side farther from the surface layer 102. The front end of the second inclined surface M2 does not extend beyond the rear end of the first inclined surface M1. The sidewall of the joint insulation board 3 is provided with a first anti-inclined surface N1 and a second anti-inclined surface N2 that respectively cooperate with the first inclined surface M1 and the second inclined surface M2.

[0061] For example, such as Figure 8b As shown, in the prefabricated insulation panel 1, the surface layer 102 includes three insulation layers 11 (i.e., n=3). The sidewall of the bottom insulation layer 11 is set as an upward-facing first inclined surface M1, and the sidewall of the top insulation layer 11 is set as an upward-facing second inclined surface M2. The middle insulation layer 11 keeps its sidewall vertical. The bottom sidewall of the joint insulation panel 3 is provided with a first anti-inclined surface N1 that cooperates with the first inclined surface M1, and the top sidewall of the joint insulation panel 3 is provided with a second anti-inclined surface N2 that cooperates with the second inclined surface M2.

[0062] For example, such as Figure 9 As shown, in the prefabricated insulation panel 1, the surface layer 102 includes five insulation layers 11 (i.e., n=5). The sidewall of the first insulation layer 11 is set as an upward-facing first inclined surface M1, the sidewall of the fifth insulation layer 11 is set as an upward-facing second inclined surface M2, and the sidewalls of the middle second and fourth insulation layers 11 remain vertical. The bottom sidewall of the joint insulation panel 3 is provided with a first anti-inclined surface N1 that cooperates with the first inclined surface M1, and the top sidewall of the joint insulation panel 3 is provided with a second anti-inclined surface N2 that cooperates with the second inclined surface M2.

[0063] In one embodiment, assuming the number of insulation layers 11 included in the surface layer 102 is n≥3, adjacent insulation layers 11 are respectively the i-th insulation layer and the (i+1)-th insulation layer, 1≤i≤n-1, where i is a positive integer. The edge of the (i+1)-th insulation layer does not extend beyond the edge of the i-th insulation layer. Furthermore, at least one of the second to (n-1)-th insulation layers has an upwardly exposed second step surface T2 on its edge, and the sidewall of the joint insulation board 3 has a reverse step surface F that mates with the second step surface T2.

[0064] For example, such as Figure 8b As shown, the surface layer 102 includes three insulation layers 11 (i.e., n=3). The edge surface of the second insulation layer 11 is provided with an upward exposed second step surface T2, and the side wall of the joint insulation board 3 is provided with a reverse step surface F that cooperates with the second step surface T2.

[0065] For example, such as Figure 9 As shown, in the prefabricated insulation board 1, the surface layer 102 includes five insulation layers 11 (i.e., n=5). The edge surfaces of the second and fourth insulation layers 11 are provided with an upward-exposed second step surface T2, and the side wall of the joint insulation board 3 is provided with a reverse step surface F that cooperates with the second step surface T2.

[0066] for Figures 8a to 9In the proposed solution, while the combination of the inclined and anti-inclined surfaces improves the uniformity of the installation gap and the consistency of thermal expansion and contraction on both sides, it may introduce some potential heat loss risks. However, by adding the second step surface T2 and the anti-inclined surface F, which are positioned between the upper and lower inclined surfaces and the anti-inclined surface, the gap fits more tightly. This not only extends the heat transfer path but also makes the heat loss path more tortuous, further enhancing the insulation effect.

[0067] It should be noted that, Figure 8a , Figure 8b and Figure 9 In the middle, inclined surfaces are provided at the opening formed on the surface 102 and at the bottom, which helps to improve the installation and rotation guidance effect and can further improve the uniformity of the installation gap.

[0068] In one embodiment, such as Figure 9 As shown, when the surface layer 102 has a multi-layer structure, at least one of the second to the (n-1)th insulation layers can be provided with an upward-facing third inclined surface M3 on its side, and the side wall of the joint insulation board 3 is provided with a third anti-inclined surface N3 that cooperates with the third inclined surface M3, thereby further enhancing the effect of improving the uniformity of the installation gap.

[0069] This application also provides an installation method for the aforementioned liquid cargo tank insulation system, which includes at least the following steps:

[0070] a. Complete the fabrication of prefabricated insulation panels 1, fixing components 2, joint insulation panels 3, etc., according to the design requirements;

[0071] b. Complete the grid division of the outer surface of the liquid cargo tank 5 and the positioning and welding of the embedded parts 21 of the fixing component 2 according to the design requirements;

[0072] c. Install the prefabricated insulation board 1 within the limited area of ​​the embedded part 21, fix the prefabricated insulation board 1 through the fixing component 2, and perform heat insulation treatment at the fixing component 2.

[0073] d. Cover the surface of the fixed component 2 with a liquid-tight layer 6;

[0074] e. Install a prefabricated joint insulation board 3 at the joint of adjacent prefabricated insulation boards 1; the anti-inclined surface of the joint insulation board 3 is guided by the inclined surface of the prefabricated insulation board to ensure that the joint insulation board 3 is installed in place.

[0075] f. Install protective layer 4 on the surface of prefabricated insulation board 1 and joint insulation board 3 to complete the installation; the protective layer 4 on the surface of prefabricated insulation board 1 and the protective layer 4 on the surface of joint insulation board 3 on both sides should have a certain overlap width.

[0076] The above description is only a partial preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A liquid cargo tank insulation system, characterized in that, include: If the prefabricated insulation panel (1) is laid on the outer surface of the liquid cargo tank (5) and assembled to form a panel-type insulation layer; the prefabricated insulation panel (1) includes a base layer (101) and a surface layer (102) attached to the upper surface of the base layer (101); the sidewall of the surface layer (102) is at a predetermined distance from the sidewall of the base layer (101) to form a first stepped surface on the edge surface of the base layer (101); at least a portion of the height area of ​​the sidewall of the surface layer (102) is provided with an upward inclined surface; wherein, the adjacent prefabricated insulation panels (1) include a first joint between adjacent base layers (101) and a second joint between adjacent surface layers (102); Several fixing components (2) are provided in the first joint of the adjacent prefabricated insulation board (1), and one end of the fixing component (2) is fixed to the outer surface of the liquid cargo tank (5), and the other end is pressed on the first step surface of the adjacent base layer (101); The joint insulation board (3) is sealed and filled in the second joint of the prefabricated insulation board (1); and the side wall of the joint insulation board (3) is provided with at least a reverse inclined surface that matches the inclined surface of the side wall of the surface layer (102); In the prefabricated insulation panel (1), the side wall of the surface layer (102) near the base layer (101) is provided with an upward-facing first inclined surface, and the top side wall of the surface layer (102) is provided with an upward-facing second inclined surface; wherein, the side closer to the side of the surface layer (102) is the front end, and the side farther from the side of the surface layer (102) is the rear end, and the front end of the second inclined surface does not extend beyond the rear end of the first inclined surface; The bottom sidewall of the joint insulation board (3) is provided with a first anti-inclined surface that cooperates with the first inclined surface, and the top sidewall of the joint insulation board (3) is provided with a second anti-inclined surface that cooperates with the second inclined surface; The surface layer (102) has at least one exposed second step surface facing upwards on its sidewall, and the joint insulation board (3) has a reverse step surface on its sidewall that matches the second step surface.

2. The liquid cargo tank insulation system according to claim 1, characterized in that, The surface layer (102) includes at least two overlapping insulating layers (11).

3. The liquid cargo tank insulation system according to claim 2, characterized in that, A reinforcing layer (12) is provided between adjacent insulation layers (11) and between the surface layer (102) and the base layer (101). The reinforcing layer (12) has a planar grid structure.

4. The liquid cargo tank insulation system according to claim 2, characterized in that, The surface layer (102) comprises n layers of insulation layers (11) stacked on top of each other, with the bottommost insulation layer (11) being the first layer and the topmost insulation layer (11) being the nth layer, where n≥2. The side of the first layer of the insulation layer (11) is set as an upward first inclined surface, and the side of the nth layer of the insulation layer (11) is set as an upward second inclined surface; Among them, the side closer to the side of the surface layer (102) is the front end, and the side farther away from the side of the surface layer (102) is the rear end, and the front end of the second inclined surface does not extend beyond the rear end of the first inclined surface; The sidewall of the joint insulation board (3) is provided with a first anti-inclined surface and a second anti-inclined surface that respectively cooperate with the first inclined surface and the second inclined surface.

5. The liquid cargo tank insulation system according to claim 4, characterized in that, The number of the insulation layers (11) contained in the surface layer (102) is n≥3, and the adjacent insulation layers (11) are respectively the i-th insulation layer and the (i+1)-th insulation layer, 1≤i≤n-1, where i is a positive integer; Wherein, the edge of the (i+1)th insulation layer does not extend beyond the edge of the ith insulation layer; Furthermore, at least one of the insulation layers from the second layer to the (n-1)th layer has an upward-exposed second step surface at its edge, and the sidewall of the joint insulation board (3) has a reverse step surface that matches the second step surface.

6. The liquid cargo tank insulation system according to claim 5, characterized in that, In the surface layer (102), at least one of the second to the (n-1)th insulation layers has an upward-facing third inclined surface on its side, and the side wall of the joint insulation board (3) has a third anti-inclined surface that cooperates with the third inclined surface.

7. The liquid cargo tank insulation system according to claim 1, characterized in that, The joint insulation board (3) includes an insulation body (31) and an elastic insulation layer (32) covering the surface of the insulation body (31).

8. The liquid cargo tank insulation system according to claim 1, characterized in that, The fixing component (2) includes an embedded part (21), a fixing rod (22), a fixing piece (24), and a fastener (25); The embedded part (21) is pre-installed on the outer surface of the liquid cargo tank (5), the bottom end of the fixing rod (22) is connected to the embedded part (21), and the fixing rod (22) extends outward along the first joint between the base layers (101); The fixing piece (24) has a middle concave structure and an upper relative folded edge. The concave structure is inserted into the first joint between adjacent base layers (101), and the upper relative folded edges are respectively covered on the adjacent first step surface at the joint of adjacent base layers (101). The fastener (25) passes through the recessed structure in the middle of the fixing piece (24) and connects to the top of the fixing rod (22) to press the fixing piece (24) onto the first step surface.

9. The liquid cargo tank insulation system according to claim 8, characterized in that, The fixing component (2) also includes an elastic bushing (23) and an insulating filler (26); The elastic bushing (23) is sleeved on the outer wall of the fixed rod (22), and the heat insulation filler (26) is filled in the middle recessed structure of the fixed piece (24).

10. The liquid cargo tank insulation system according to claim 1, characterized in that, The surface of the liquid cargo tank (5) is provided with a number of protruding structures (51), and the prefabricated insulation board (1) is placed on the protruding structures (51) to form a leakage channel (52) between the prefabricated insulation board (1) and the outer wall of the liquid cargo tank (5).

11. The liquid cargo tank insulation system according to claim 1, characterized in that, It also includes a protective layer (4), which is laid on the upper surface of the prefabricated insulation board (1) and the joint insulation board (3), with the edges of two adjacent protective layers (4) overlapping.

12. The liquid cargo tank insulation system according to claim 1, characterized in that, It also includes a liquid-tight layer (6) that covers the joint between adjacent base layers (101), covers the fixing component (2), and is pressed by the joint insulation board (3).

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