Liquid cargo tank heat insulation system

Abstract

The invention provides a liquid cargo tank heat insulation system. The liquid cargo tank heat insulation system comprises a prefabricated heat insulation plate, a fixing assembly and a joint heat insulation plate. The prefabricated heat insulation plates are laid on the outer surface of the liquid cargo tank and spliced to form a plate-type heat insulation layer. The prefabricated heat insulation plate comprises a base layer and a surface layer attached to the base layer. The surface-layer side wall does not exceed the base-layer side wall so as to form a first step surface on the surface of the base-layer edge part. The surface layer side wall is provided with an upward inclined plane. A first joint between the adjacent base layers and a second joint between the adjacent surface layers are arranged between the adjacent prefabricated heat insulation plates. One end of the fixing assembly is fixed to the outer surface of the liquid cargo tank, and the other end of the fixing assembly is pressed on the first step face of the adjacent base layer. The second joint is filled with the joint heat insulation plate, and the side wall of the joint heat insulation plate is at least provided with a reverse inclined face matched with the inclined face of the surface layer side wall. The installation gap uniformity between the two side walls of the joint heat insulation plate and the corresponding prefabricated heat insulation plate can be improved, the changes of gaps on the two sides are relatively consistent under the influence of thermal expansion and cold contraction subsequently, the cracking risk is reduced, and the heat insulation effect is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of adiabatic design for liquid cargo tanks, and more particularly, to a liquid cargo tank adiabatic system. Background Art

[0002] The liquid-tight shell used on a liquefied gas carrier for loading cryogenic liquid cargo is called a liquid cargo tank. The types of liquid cargo tanks include membrane type and independent type, and the independent type includes Type A, Type B, and Type C. Due to its advantages such as large space, no limitation on the liquid cargo loading volume, small daily evaporation rate of the liquid cargo, and convenient installation and maintenance, the independent Type B liquid cargo tank has long been used in ships for transporting liquefied natural gas, ethane, etc. The independent Type B liquid cargo tank is a tank type with a unique structure, and its adiabatic system is different from the relatively mature membrane type liquid cargo tank in the current technology. The structure of the independent Type B liquid cargo tank is relatively complex and has a large deformation under working conditions. Therefore, a plate-type adiabatic system with relatively high strength, that is, prefabricated adiabatic plates, needs to be installed on the surface of the liquid cargo tank.

[0003] In the prior art, the plate-type adiabatic system consists of multiple prefabricated adiabatic plates joined together. The gaps between adjacent prefabricated adiabatic plates are filled with some adiabatic blocks. When the adiabatic blocks are installed into the gaps between the prefabricated adiabatic plates, the installation gaps on both sides of the adiabatic blocks and the corresponding prefabricated adiabatic plates are not evenly controlled, which easily leads to inconsistent effects of thermal expansion and contraction in the later stage, resulting in a situation where one side is squeezed and the other side is loose. As a result, uneven cracks appear between the adiabatic blocks and the prefabricated adiabatic plates, affecting the adiabatic effect and reducing the service life. Summary of the Invention

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

[0005] A liquid cargo tank adiabatic system provided by this application includes prefabricated adiabatic plates, fixing components, and joint adiabatic plates.

[0006] Among them, several prefabricated thermal insulation boards are laid on the outer surface of the liquid cargo tank and joined together to form a plate-type thermal insulation layer; the prefabricated thermal insulation board includes a base layer and a surface layer attached to the upper surface of the base layer; the side wall of the surface layer is at a predetermined distance from the side wall of the base layer to form a first stepped surface on the surface of the edge of the base layer; at least a part of the height area of the side wall of the surface layer is provided with an upward inclined surface; among them, between adjacent prefabricated thermal insulation boards, there are a first joint between adjacent base layers and a second joint between adjacent surface layers. Several fixing components are arranged in the first joint of adjacent prefabricated thermal insulation boards, and one end of the fixing component is fixed to the outer surface of the liquid cargo tank, and the other end presses on the first stepped surface of the adjacent base layer. The joint thermal insulation board is hermetically filled in the second joint of the prefabricated thermal insulation board; and at least the side wall of the joint thermal insulation board is provided with an anti-inclined surface that cooperates with the inclined surface of the side wall of the surface layer.

[0007] In an implementable solution, the entire side surface of the surface layer is set as an inclined surface, and the entire side wall of the joint thermal insulation board is set as an anti-inclined surface.

[0008] In an implementable solution, in the prefabricated thermal insulation board, the side wall of the surface layer close to the base layer is provided with an upward first inclined surface; the bottom side wall of the joint thermal insulation board is provided with a first anti-inclined surface that cooperates with the first inclined surface.

[0009] In an implementable solution, in the prefabricated thermal insulation board, the top side wall of the surface layer is provided with an upward second inclined surface; the top side wall of the joint thermal insulation board is provided with a second anti-inclined surface that cooperates with the second inclined surface.

[0010] In an implementable solution, in the prefabricated thermal insulation board, the side wall of the surface layer close to the base layer is provided with an upward first inclined surface, and the top side wall of the surface layer is provided with an upward second inclined surface; among them, with the side close to the side surface of the surface layer as the front end and the side far from the side surface of the surface layer as the rear end, the front end of the second inclined surface does not exceed the rear end of the first inclined surface; the bottom side wall of the joint thermal insulation board is provided with a first anti-inclined surface that cooperates with the first inclined surface, and the top side wall of the joint thermal insulation board is provided with a second anti-inclined surface that cooperates with the second inclined surface.

[0011] In an implementable solution, at least one upward exposed second stepped surface is provided at the side wall of the surface layer, and the side wall of the joint thermal insulation board is provided with an anti-stepped surface that cooperates with the second stepped surface.

[0012] In an implementable solution, the surface layer includes at least two mutually stacked thermal insulation layers.

[0013] In an implementable solution, a reinforcing layer is provided between adjacent thermal insulation layers and between the surface layer and the base layer, and the reinforcing layer is a planar grid structure.

[0014] In an implementable solution, the surface layer includes n layers of superposed heat-insulating layers. The lowermost heat-insulating layer is the first layer, and the uppermost heat-insulating layer is the nth layer, where n≥2. The side surface of the first heat-insulating layer is set as an upwardly facing first inclined surface, and the side surface of the nth heat-insulating layer is set as an upwardly facing second inclined surface. Here, with the side closer to the side surface of the surface layer as the front end and the side farther from the side surface of the surface layer as the rear end, the front end of the second inclined surface does not extend beyond the rear end of the first inclined surface. The side wall of the joint heat-insulating plate is provided with a first reverse inclined surface and a second reverse inclined surface respectively matching the first inclined surface and the second inclined surface.

[0015] In an implementable solution, the number n of heat-insulating layers included in the surface layer is n≥3. Adjacent heat-insulating layers are the ith heat-insulating layer and the (i + 1)th heat-insulating layer respectively, where 1≤i≤n - 1 and i is a positive integer. Among them, the edge of the (i + 1)th heat-insulating layer does not extend beyond the edge of the ith heat-insulating layer. And at least one layer among the second heat-insulating layer to the (n - 1)th heat-insulating layer has an upwardly exposed second step surface on its edge, and the side wall of the joint heat-insulating plate is provided with a reverse step surface matching the second step surface.

[0016] In an implementable solution, in the surface layer, at least one layer among the second heat-insulating layer to the (n - 1)th heat-insulating layer has a side surface set as an upwardly facing third inclined surface, and the side wall of the joint heat-insulating plate is provided with a third reverse inclined surface matching the third inclined surface.

[0017] In an implementable solution, the joint heat-insulating plate includes a heat-insulating main body and an elastic heat-insulating layer covering the surface of the heat-insulating main body.

[0018] In an implementable solution, the fixing assembly includes an embedded part, a fixing rod, a fixing piece, and a fastener. The embedded part is preset 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 piece has a structure with a middle concave structure and upper opposite folded edges. The concave structure is inserted into the first joint between adjacent base layers, and the upper opposite folded edges are respectively covered on the adjacent first step surfaces at the joint of adjacent base layers. The fastener passes through the middle concave structure of the fixing piece and is connected to the top end of the fastener to press the fixing piece against the first step surface.

[0019] In an implementable solution, the fixing assembly further includes an elastic bushing and a heat-insulating filling block. The elastic bushing is sleeved on the outer wall of the fixing rod, and the heat-insulating filling block is filled in the middle concave structure of the fixing piece.

[0020] In an implementable solution, a number of convex structures are provided on the surface of the liquid cargo tank, and the prefabricated heat-insulating plate is placed on the convex structures, so as to form a leakage channel between the prefabricated heat-insulating plate and the outer wall of the liquid cargo tank.

[0021] In an implementable solution, the liquid cargo tank thermal insulation system further includes a protective layer, which is laid on the upper surfaces of the prefabricated thermal insulation boards and the joint thermal insulation boards, and the edges of two adjacent protective layers are arranged in an overlapping manner.

[0022] In an implementable solution, the liquid cargo tank thermal insulation system further includes a liquid-tight layer, which covers the joints of adjacent base layers, covers the fixing components, and is pressed by the joint thermal insulation boards.

[0023] Compared with the prior art, the beneficial effects of the present application at least include: When installing the liquid cargo tank thermal insulation system of the present application, several prefabricated thermal insulation boards are laid on the outer surface of the liquid cargo tank, and then fixing components are installed in the first joints between adjacent base layers of adjacent prefabricated thermal insulation boards, and the prefabricated thermal insulation boards are fixed by the fixing components. Then, joint thermal insulation boards are installed in the second joints between adjacent surface layers of adjacent prefabricated thermal insulation boards. Since the side wall of the surface layer is provided with an inclined surface, and the side wall of the joint thermal insulation board is provided with an anti-inclined surface that matches the inclined surface of the side wall of the surface layer, therefore, even if there is a certain misalignment between the joint thermal insulation board and the adjacent prefabricated thermal insulation board, the cooperation between the inclined surface and the anti-inclined surface can still be used to guide the joint thermal insulation board into the correct position. At the same time, due to the guiding cooperation between the inclined surface and the anti-inclined surface, when the joint thermal insulation board continuously enters the joint, it can automatically balance the gap between the joint thermal insulation board and the adjacent prefabricated thermal insulation board, which helps to control the uniformity of the installation gaps between the two side walls of the joint thermal insulation board and the corresponding prefabricated thermal insulation boards. When affected by thermal expansion and contraction subsequently, the gaps at the two side walls of the joint thermal insulation board change relatively consistently, reducing the risk of cracking. While ensuring the thermal insulation effect, it helps to extend the service life. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a partial structural diagram of a liquid cargo tank thermal insulation system shown in an embodiment of the present application.

[0026] Figure 2 For Figure 1 The enlarged structural view of part A in

[0027] Figure 3 It is an exploded structural diagram of a fixing component shown in an embodiment of the present application.

[0028] Figure 4 The top view of multiple prefabricated thermal insulation boards spliced together shown in an embodiment of the present application.

[0029] Figure 5 Schematic diagram of the first caulking assembly structure shown in the application embodiments.

[0030] Figure 6a Schematic diagram of the second caulking assembly structure shown in the application embodiments.

[0031] Figure 6b Schematic diagram of the third caulking assembly structure shown in the application embodiments.

[0032] Figure 7a Schematic diagram of the fourth caulking assembly structure shown in the application embodiments.

[0033] Figure 7b Schematic diagram of the fifth caulking assembly structure shown in the application embodiments.

[0034] Figure 8a Schematic diagram of the sixth caulking assembly structure shown in the application embodiments.

[0035] Figure 8b Schematic diagram of the seventh caulking assembly structure shown in the application embodiments.

[0036] Figure 9 Schematic diagram of the eighth caulking assembly structure shown in the application embodiments.

[0037] In the figure: 1, prefabricated insulation board; 101, base layer; 102, surface layer; 11, insulation layer; 12, strengthening 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 assembly; 21, embedded part; 22, fixing rod; 23, elastic bushing; 24, fixing piece; 25, fastener; 26, insulation filling block; 27, filler layer; 3, joint insulation board; 31, insulation main body; 32, elastic insulation layer; 4, protective layer; 5, liquid cargo tank; 51, convex structure; 52, leakage channel; 6, liquid-tight layer. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0039] Accordingly, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0040] As Figure 1 , Figure 2 and Figure 4 shown, an embodiment of the present application provides a cargo tank thermal insulation system, including prefabricated thermal insulation boards 1, fixing components 2 and joint thermal insulation boards 3.

[0041] Among them, a plurality of prefabricated thermal insulation boards 1 are laid on the outer surface of the cargo tank 5 and are joined together to form a plate-type thermal insulation layer. The prefabricated thermal insulation board 1 includes a base layer 101 and a surface layer 102 attached to the upper surface of the base layer 101; the side wall of the surface layer 102 is at a predetermined distance from the side wall of the base layer 101 to form a first step surface T1 on the edge surface of the base layer 101; at least a partial height region of the side wall of the surface layer 102 is provided with an upward inclined surface M0; among them, between adjacent prefabricated thermal insulation boards 1, there are a first joint between adjacent base layers 101 and a second joint between adjacent surface layers 102.

[0042] A plurality of fixing components 2 are arranged in the first joints of adjacent prefabricated thermal insulation boards 1, and one end of the fixing component 2 is fixed to the outer surface of the cargo tank 5, and the other end presses on the first step surface T1 of the adjacent base layer 101. The joint thermal insulation board 3 is hermetically filled in the second joints of the prefabricated thermal insulation boards 1; and at least the side wall of the joint thermal insulation board 3 is provided with an anti-inclined surface N0 that cooperates with the inclined surface M0 of the side wall of the surface layer 102.

[0043] When the adiabatic system of the liquid cargo tank in this embodiment is installed, a number of prefabricated adiabatic panels 1 are laid on the outer surface of the liquid cargo tank 5, and then a fixing component 2 is installed in the first joint between adjacent base layers 101 of adjacent prefabricated adiabatic panels 1. The prefabricated adiabatic panels 1 are fixed by the fixing component 2. After that, a joint adiabatic panel 3 is installed in the second joint between adjacent surface layers 102 of adjacent prefabricated adiabatic panels 1. Since the side wall of the surface layer 102 is provided with an inclined surface M0, and the side wall of the joint adiabatic panel 3 is provided with an anti-inclined surface N0 that matches the inclined surface M0 of the side wall of the surface layer 102, therefore, even if there is a certain misalignment between the joint adiabatic panel 3 and the adjacent prefabricated adiabatic panel 1, the cooperation between the inclined surface M0 and the anti-inclined surface N0 can still be used to guide the joint adiabatic panel 3 into the correct position. At the same time, due to the guiding cooperation of the inclined surface M0 and the anti-inclined surface N0, when the joint adiabatic panel 3 continuously enters the joint, it can automatically balance the gap between the joint adiabatic panel 3 and the adjacent prefabricated adiabatic panel 1, which helps to control the uniformity of the installation gap between the two side walls of the joint adiabatic panel 3 and the corresponding prefabricated adiabatic panel 1. When affected by thermal expansion and contraction later, the gaps at the two side walls of the joint adiabatic panel 3 change relatively consistently, reducing the risk of cracking, ensuring the adiabatic effect, and helping to extend the service life.

[0044] In one embodiment, it is preferably set that the side wall structures of the prefabricated adiabatic panels 1 are the same, so that the joints formed between adjacent prefabricated adiabatic panels 1 are symmetric structures with respect to the axis of the fixing component 2. At the same time, the corresponding joint adiabatic panels 3 are also symmetric structures with respect to the axis of the fixing component 2. Thus, after the joint adiabatic panel 3 is installed by filling the joint under the guiding cooperation of the inclined surface M0 and the anti-inclined surface N0, the installation gaps between the two side walls of the joint adiabatic panel 3 and the corresponding prefabricated adiabatic panel 1 are basically exactly the same. When dealing with the changes of thermal expansion and contraction later, the change conditions are more consistent, and the adiabatic effect is relatively better.

[0045] In one embodiment, as Figure 2 and Figure 3 shown, 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 preset 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 structure with a middle concave structure and upper relatively folded edges. The concave structure is inserted into the first joint between adjacent base layers 101, and the upper relatively folded edges are respectively covered on the adjacent first step surfaces at the joints of adjacent base layers 101. The fastener 25 passes through the middle concave structure of the fixing piece 24 and is connected to the top end of the fastener 25 to press the fixing piece 24 against the first step surface T1.

[0046] Among them, the embedded part 21 can be a welding bolt embedded in the surface of the liquid cargo tank 5, the fastener 25 can be a bolt standard part, and internal threaded holes can be provided at both ends of the fixing rod 22 for threaded cooperation with the embedded part 21 and the fastener 25 respectively. The fixing rod 22 can be made of materials with low thermal conductivity, including but not limited to wood, plastic, composite materials, etc., such as wood, Teflon plastic, etc., so as to reduce the heat propagated along the axial direction of the fixing rod 22. The fixing piece 24 can be made of low-temperature resistant materials, including but not limited to metals, plastics, composite materials, etc.

[0047] In one embodiment, as Figure 2 and Figure 3 shown, the fixing assembly 2 can further include an elastic bushing 23 and an adiabatic filling block 26. The elastic bushing 23 is sleeved on the outer wall of the fixing rod 22, and the adiabatic filling block 26 is filled in the middle concave structure of the fixing piece 24. The materials of the elastic bushing 23 and the adiabatic filling block 26 include but not limited to glass wool, elastic cotton, aerogel felt, polyethylene plastic, etc., and the function is to fill the gaps and maintain good adiabatic effect. In addition, a filler layer 27 can be further arranged between the adiabatic filling block 26 and the fastener 25, and its materials include but not limited to low-temperature glue, silica gel, epoxy resin glue, etc., to further enhance the sealing and heat insulation effects.

[0048] In one embodiment, as Figure 1 and Figure 2 shown, a plurality of convex structures 51 can be provided on the surface of the liquid cargo tank 5, and the prefabricated thermal insulation board 1 is laid on the convex structures 51, so that a leakage channel 52 is formed between the prefabricated thermal insulation board 1 and the outer wall of the liquid cargo tank 5, facilitating the diversion of the low-temperature liquid leaked from the liquid cargo tank 5 along the leakage channel 52 to the bottom of the liquid cargo tank 5 without accumulating in the prefabricated thermal insulation board 1.

[0049] In one embodiment, as Figure 1 and Figure 2 shown, the liquid cargo tank thermal insulation system further includes a protective layer 4, which is laid on the upper surfaces of the prefabricated thermal insulation board 1 and the joint thermal insulation board 3, and the edges of two adjacent protective layers 4 are arranged in an overlapping manner. Among them, 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), and TPO is composed of polyolefin resins including but not limited to polypropylene (PP) or polyethylene (PE), etc.), fiberglass materials, and metal materials, etc., which can provide good mechanical protection and anti-aging protection.

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

[0051] In one embodiment, as Figures 5 to 9 shown, the surface layer 102 may include only a single layer of insulation layer 11, or may include at least two mutually overlapping insulation layers 11. Similarly, the base layer 101 may include only a single layer of insulation layer 11, or may include at least two mutually overlapping insulation layers 11. A reinforcing layer 12 is provided between adjacent insulation layers 11 and between the surface layer 102 and the base layer 101, and the reinforcing layer 12 is a planar grid structure. Among them, the main materials of the insulation layer 11 include but are not limited to polyurethane foam, polystyrene foam, polyethylene plastic, phenolic foam, etc., and can be reinforced with glass fiber, hollow glass microspheres, etc. The reinforcing layer 12 may be composed of one or more grid materials, and the grid materials may be glass fiber grid cloth, carbon fiber grid cloth, metal mesh, etc. The insulation layer 11 and the reinforcing layer 12 can be bonded by a low-temperature glue.

[0052] In one embodiment, as Figure 2 shown, the joint insulation board 3 may include an insulation main body 31 and an elastic insulation layer 32 covering the surface of the insulation main body 31. The insulation main body 31 may be a multi-layer overlapping structure. The insulation main body 31 may be an integral insulation structure, or may also be formed by alternately overlapping insulation layers and reinforcing layers, similar to the layer structure of the prefabricated insulation board 1. An elastic insulation layer 32 is covered on the surface of the insulation main body 31 to form an integral structure for increasing the joint sealing effect. The elastic insulation layer 32 may include but is not limited to glass wool, elastic cotton, aerogel felt, polyethylene plastic, etc.

[0053] In one embodiment, as Figure 5 shown, the entire side surface of the surface layer 102 may be set as an inclined surface M0, and the entire side wall of the joint insulation board 3 is set as a reverse inclined surface N0.

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

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

[0056] In one embodiment, as Figure 7a shown, in the prefabricated insulation board 1, the surface layer 102 only includes one insulation layer 11, and the top side wall of the surface layer 102 is provided with a second inclined surface M2 facing upward. The top side wall of the joint insulation board 3 is provided with a second reverse inclined surface N2 that cooperates with the second inclined surface M2.

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

[0058] In one embodiment, as Figure 8a shown, in the prefabricated insulation board 1, the surface layer 102 only includes one insulation layer 11, the side wall near the base layer 101 of the surface layer 102 is provided with a first inclined surface M1 facing upward, and the top side wall of the surface layer 102 is provided with a second inclined surface M2 facing upward; wherein, with the side close to the side of the surface layer 102 as the front end and the side far from the side of the surface layer 102 as the rear end, the front end of the second inclined surface M2 does not extend beyond the rear end of the first inclined surface M1. The bottom side wall of the joint insulation board 3 is provided with a first reverse inclined surface N1 that cooperates with the first inclined surface M1, and the top side wall of the joint insulation board 3 is provided with a second reverse inclined surface N2 that cooperates with the second inclined surface M2.

[0059] In one embodiment, as Figure 8a shown, at least one upward-exposed second step surface T2 can be provided at 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, assuming that the surface layer 102 includes n mutually stacked insulation layers 11, the lowermost insulation layer 11 is the first layer, and the uppermost insulation layer 11 is the nth layer, where n≥2. The side surface of the first insulation layer 11 is set as a first inclined surface M1 facing upward, and the side surface of the nth insulation layer 11 is set as a second inclined surface M2 facing upward. Wherein, with the side close to the side of the surface layer 102 as the front end and the side far from the side of the surface layer 102 as the rear end, the front end of the second inclined surface M2 does not extend beyond the rear end of the first inclined surface M1. The side wall of the joint insulation board 3 is provided with a first reverse inclined surface N1 and a second reverse inclined surface N2 that respectively cooperate with the first inclined surface M1 and the second inclined surface M2.

[0061] For example, as Figure 8b shown, in the prefabricated insulation board 1, the surface layer 102 includes three insulation layers 11 (i.e., n = 3). The side wall of the bottommost insulation layer 11 is set as the first inclined surface M1 facing upward, and the side wall of the topmost insulation layer 11 is set as the second inclined surface M2 facing upward. The side walls of the intermediate insulation layers 11 remain vertical. The bottom side wall of the joint insulation board 3 is provided with a first reverse inclined surface N1 that cooperates with the first inclined surface M1, and the top side wall of the joint insulation board 3 is provided with a second reverse inclined surface N2 that cooperates with the second inclined surface M2.

[0062] Again, for example, as Figure 9 shown, in the prefabricated insulation board 1, the surface layer 102 includes five insulation layers 11 (i.e., n = 5). The side wall of the first insulation layer 11 is set as the first inclined surface M1 facing upward, and the side wall of the fifth insulation layer 11 is set as the second inclined surface M2 facing upward. The side walls of the intermediate second and fourth insulation layers 11 remain vertical. The bottom side wall of the joint insulation board 3 is provided with a first reverse inclined surface N1 that cooperates with the first inclined surface M1, and the top side wall of the joint insulation board 3 is provided with a second reverse inclined surface N2 that cooperates with the second inclined surface M2.

[0063] In an embodiment, assuming that the number n of the insulation layers 11 included in the surface layer 102 is n≥3, the adjacent insulation layers 11 are the i-th insulation layer and the (i + 1)-th insulation layer respectively, where 1≤i≤n - 1 and i is a positive integer. Among them, the edge of the (i + 1)-th insulation layer does not extend beyond the edge of the i-th insulation layer. And at least one of the edges of the second insulation layer to the (n - 1)-th insulation layer is provided with an upwardly 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.

[0064] For example, as Figure 8b 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 upwardly 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] Again, for example, as Figure 9 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 upwardly exposed second step surfaces 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 surfaces T2.

[0066] For Figures 8a to 9In the solution, although the cooperation between the inclined surface and the anti-inclined surface can improve the uniformity of the installation gap and the consistency of the thermal expansion and contraction changes of the gaps on both sides, it may bring some potential hazards of heat dissipation. However, after adding the second step surface T2 and the anti-step surface F, which are between the cooperation of the upper and lower inclined surfaces and the anti-inclined surface, the gap fits more tightly, not only extending the heat transfer path, but also making the heat dissipation path more tortuous, further enhancing the heat insulation effect.

[0067] It should be noted that Figure 8a 、 Figure 8b and Figure 9 In, inclined surfaces are provided at the openings formed in the surface layer 102 and at the bottom, which helps to improve the installation guiding effect and further improve the uniformity of the installation gap.

[0068] In an embodiment, as Figure 9 shown, when the surface layer 102 has a multi-layer structure, at least one side surface of the second heat insulation layer to the (n - 1)th heat insulation layer can be provided with an upward third inclined surface M3, and the side wall of the joint heat insulation plate 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] The embodiment of the present application also provides an installation method for the foregoing liquid cargo tank heat insulation system, which at least includes the following steps:

[0070] a. Fabricate the prefabricated heat insulation plate 1, the fixing component 2, the joint heat insulation plate 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 fabrication of the embedded parts 21 of the fixing component 2 according to the design requirements;

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

[0073] d. Cover the liquid-tight layer 6 on the surface of the fixing component 2;

[0074] e. Install the prefabricated joint heat insulation plate 3 at the joint of adjacent prefabricated heat insulation plates 1; under the guiding cooperation of the anti-inclined surface of the joint heat insulation plate 3 and the inclined surface of the prefabricated heat insulation plate, the joint heat insulation plate 3 is installed in place;

[0075] f. Install the protective layer 4 on the surfaces of the prefabricated heat insulation plate 1 and the joint heat insulation plate 3 to complete the installation; the protective layer 4 on the surface of the prefabricated heat insulation plate 1 and the protective layers 4 on the surfaces of the joint heat insulation plates 3 on both sides maintain a certain overlapping width.

[0076] The above are only some preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A liquid cargo tank insulation system, characterized in that, Comprising: A plurality of prefabricated heat insulation boards (1), which are laid on the outer surface of the liquid cargo tank (5) and are assembled to form a plate-type heat insulation layer; the prefabricated heat insulation board (1) includes a base layer (101) and a surface layer (102) attached to the upper surface of the base layer (101); the side wall of the surface layer (102) is at a predetermined distance from the side wall of the base layer (101) to form a first stepped surface on the edge surface of the base layer (101); at least a partial height region of the side wall of the surface layer (102) is provided with an upward inclined surface; wherein, between adjacent prefabricated heat insulation boards (1), there are a first joint between adjacent base layers (101) and a second joint between adjacent surface layers (102); A plurality of fixing components (2), which are arranged in the first joint of adjacent prefabricated heat insulation boards (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 presses on the first stepped surface of the adjacent base layer (101); A joint heat insulation board (3), which is hermetically filled in the second joint of the prefabricated heat insulation board (1); and at least the side wall of the joint heat insulation board (3) is provided with an anti-inclined surface that cooperates with the inclined surface of the side wall of the surface layer (102).

2. The liquid cargo tank thermal insulation system according to claim 1, wherein, The entire side surface of the surface layer (102) is set as the inclined surface, and the entire side wall of the joint heat insulation board (3) is set as the anti-inclined surface.

3. The liquid cargo tank insulation system according to claim 1, characterized in that, In the prefabricated heat insulation board (1), the side wall of the surface layer (102) close to the base layer (101) is provided with an upward first inclined surface; The bottom side wall of the joint heat insulation board (3) is provided with a first anti-inclined surface that cooperates with the first inclined surface.

4. The liquid cargo tank insulation system according to claim 1, characterized in that, In the prefabricated heat insulation board (1), the top side wall of the surface layer (102) is provided with an upward second inclined surface; The top side wall of the joint heat insulation board (3) is provided with a second anti-inclined surface that cooperates with the second inclined surface.

5. The liquid cargo tank insulation system according to claim 1, characterized in that In the prefabricated heat insulation board (1), the side wall of the surface layer (102) close to the base layer (101) is provided with an upward first inclined surface, and the top side wall of the surface layer (102) is provided with an upward second inclined surface; wherein, with the side close to the side surface of the surface layer (102) as the front end and the side far from the side surface of the surface layer (102) as the rear end, the front end of the second inclined surface does not extend beyond the rear end of the first inclined surface; The bottom side wall of the joint heat insulation board (3) is provided with a first anti-inclined surface that cooperates with the first inclined surface, and the top side wall of the joint heat insulation board (3) is provided with a second anti-inclined surface that cooperates with the second inclined surface.

6. The liquid cargo tank thermal insulation system according to any one of claims 1 to 5, characterized in that, At least one upward exposed second stepped surface is provided at the side wall of the surface layer (102), and the side wall of the joint heat insulation board (3) is provided with an anti-stepped surface that cooperates with the second stepped surface.

7. The liquid cargo tank thermal insulation system according to claim 1, wherein, The surface layer (102) includes at least two mutually stacked heat insulation layers (11).

8. The cargo tank insulation system according to claim 7, wherein Reinforcing layers (12) are arranged between adjacent heat insulation layers (11) and between the surface layer (102) and the base layer (101), and the reinforcing layers (12) are of a planar grid structure.

9. The liquid cargo tank insulation system according to claim 7, characterized in that, The surface layer (102) includes n layers of the heat insulation layers (11) stacked on top of each other. The lowermost heat insulation layer (11) is the first layer, and the uppermost heat insulation layer (11) is the nth layer, where n≥2. The side surface of the first heat insulation layer (11) is set as an upward first inclined surface, and the side surface of the nth heat insulation layer (11) is set as an upward second inclined surface. Wherein, with the side close to the side surface of the surface layer (102) as the front end and the side far from the side surface of the surface layer (102) as the rear end, the front end of the second inclined surface does not extend beyond the rear end of the first inclined surface. The side wall of the joint heat insulation board (3) is provided with a first reverse inclined surface and a second reverse inclined surface respectively matching with the first inclined surface and the second inclined surface.

10. The liquid cargo tank thermal insulation system according to claim 9, characterized in that, The number n of the heat insulation layers (11) included in the surface layer (102) is n≥3. The adjacent heat insulation layers (11) are respectively the ith heat insulation layer and the (i + 1)th heat insulation layer, 1≤i≤n - 1, and i is a positive integer. Wherein, the edge of the (i + 1)th heat insulation layer does not extend beyond the edge of the ith heat insulation layer. And at least one layer of the second heat insulation layer to the (n - 1)th heat insulation layer has an upward exposed second step surface at its edge, and the side wall of the joint heat insulation board (3) is provided with a reverse step surface matching with the second step surface.

11. The liquid cargo tank thermal insulation system according to claim 10, characterized in that, In the surface layer (102), at least one layer of the second heat insulation layer to the (n - 1)th heat insulation layer has an upward third inclined surface at its side, and the side wall of the joint heat insulation board (3) is provided with a third reverse inclined surface matching with the third inclined surface.

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

13. The cargo tank insulation system according to claim 1, characterized in that, The fixing assembly (2) includes an embedded part (21), a fixing rod (22), a fixing piece (24) and a fastener (25). The embedded part (21) is preset 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 structure with a middle concave structure and upper opposite folded edges. The concave structure is inserted into the first joint between the adjacent base layers (101), and the upper opposite folded edges are respectively covered on the adjacent first step surfaces at the joint of the adjacent base layers (101). The fastener (25) passes through the middle concave structure of the fixing piece (24) and is connected to the top end of the fastener (25) to press the fixing piece (24) against the first step surface.

14. The liquid cargo tank thermal insulation system according to claim 13, characterized in that, The fixing assembly (2) further includes an elastic bushing (23) and a heat insulation filling block (26). The elastic bushing (23) is sleeved on the outer wall of the fixing rod (22), and the heat insulation filling block (26) is filled in the middle concave structure of the fixing piece (24).

15. 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 plurality of convex structures (51), and the prefabricated heat insulation board (1) is placed on the convex structures (51) to form a leakage channel (52) between the prefabricated heat insulation board (1) and the outer wall of the liquid cargo tank (5).

16. The liquid cargo tank insulation system according to claim 1, characterized in that, It further includes a protective layer (4) which is laid on the upper surfaces of the prefabricated heat-insulating panel (1) and the joint heat-insulating panel (3), and the edges of two adjacent protective layers (4) are arranged in an overlapping manner.

17. The liquid cargo tank thermal insulation system according to claim 1, characterized in that, It further includes a liquid-tight layer (6) which covers the joint of adjacent base layers (101), covers the fixing assembly (2), and is pressed by the joint heat-insulating panel (3).

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