Heat insulation system of liquid tank anti-swing support area and installation method of heat insulation system

Abstract

The invention provides a heat insulation system of a liquid tank anti-swing support area and an installation method of the heat insulation system. The thermal insulation system comprises a prefabricated thermal insulation block, a modular thermal insulation plate, a first baffle and a second baffle. The prefabricated heat insulation block is arranged in a gap of the reinforcing structure of the anti-swing support area; the modularized heat insulation plate is formed by splicing a plurality of prefabricated heat insulation plates, and a protruding structure is arranged on the first surface laid to the outer surface of the liquid tank. The first baffle is arranged on the second surface and wraps the reinforcing structure and the prefabricated heat insulation block, and a first space is formed among the first baffle, the reinforcing structure, the pressure-bearing block and the second surface; the second baffle wraps the pressure-bearing block in the anti-swing support area, and the second baffle, the first baffle, the pressure-bearing block and the reinforcing structure form a second space. The first space and the second space are filled with polyurethane foam. According to the heat insulation system, the structure and the construction process of the heat insulation system are optimized through the coincidence design of prefabricating the heat insulation plates, prefabricating the heat insulation blocks and spraying the polyurethane foam, the design and installation efficiency of the heat insulation system is remarkably improved, and the material and construction cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal insulation for ship liquid cargo tanks, and particularly to a thermal insulation system and an installation method for the anti-rolling support area of a liquid tank. Background Art

[0002] Liquefied gas carriers and ships using liquefied gas as fuel need to be equipped with independent Type A and Type B liquid tanks or fuel tanks that meet the requirements of the IMO IGC Code. As the core load-bearing structure for loading cryogenic liquefied gases, they need to meet strict requirements for liquid tightness and thermal insulation performance. According to the specifications, such liquid tanks need to be equipped with a thermal insulation system to achieve two functions: on the one hand, restricting the entry of external heat flow into the liquid tank to ensure the stability of the temperature and pressure inside the tank; on the other hand, forming a leakage guiding channel to safely guide the potentially leaked cryogenic liquid cargo to the secondary shield, while avoiding brittle damage to the hull structure due to exposure to low temperatures.

[0003] Currently, the thermal insulation systems for independent Type B liquid tanks (such as spherical tanks, prismatic tanks, etc.) mainly adopt two solutions: spraying thermal insulation foam or prefabricated thermal insulation boards. However, the structures of such liquid tanks are complex, especially in the anti-rolling support areas provided at the top and bottom. Since they are rigidly connected to the hull and there is dynamic load transfer, the thermal insulation layers in these areas need to simultaneously adapt to multiple challenges such as structural irregularity, mechanical vibration, and low-temperature deformation. Existing thermal insulation technologies are difficult to achieve uniform coverage, long-term stability, and leakage prevention and diversion functions in such special areas, and are prone to a decrease in thermal insulation performance due to stress concentration or joint failure, thereby threatening the safe operation of the liquid tank.

[0004] In addition, as a key connecting component between the liquid tank and the hull, the thermal insulation system in the surrounding area of the anti-rolling support needs to take into account both the structural support strength and the low-temperature protection requirements. Existing technologies lack a systematic design for this area, resulting in insufficient adaptability between the thermal insulation layer and the support, and it is difficult to meet the strict requirements of the IMO code for leakage control and temperature management. Therefore, there is an urgent need to develop a dedicated thermal insulation system for the anti-rolling support area of independent Type B liquid tanks to solve the thermal insulation and sealing problems under complex geometric structures. Summary of the Invention

[0005] In view of the defects and deficiencies of the existing technology, the present application provides a thermal insulation system and an installation method for the anti-rolling support area of a liquid tank to solve the problem of unsatisfactory thermal insulation effect in the anti-rolling support area of the liquid tank in the existing technology.

[0006] To achieve the above and other related purposes, in a first aspect, the present application provides a thermal insulation system for the anti-rolling support area of a liquid tank. The anti-rolling support area is provided at the top and bottom of the liquid tank and includes a strengthening structure and bearing blocks. The inside of the strengthening structure has voids, and the bearing blocks are oppositely arranged on both sides of the strengthening structure. The thermal insulation system includes:

[0007] Precast thermal insulation blocks are arranged in the gaps of the strengthening structure;

[0008] Modular thermal insulation boards are formed by splicing multiple precast thermal insulation boards and are arranged around the strengthening structure. The modular thermal insulation boards include a first surface and a second surface arranged opposite to each other. The first surface is laid on the outer surface of the liquid tank near the anti-sway support area, and a protruding structure is provided on the first surface. The second surface is arranged away from the outer surface of the liquid tank;

[0009] A first baffle is arranged above the second surface and wraps the strengthening structure and the precast thermal insulation blocks. A first space is formed between the first baffle, the strengthening structure, the bearing block, and the second surface, and the first space is filled with polyurethane foam;

[0010] A second baffle wraps the bearing block and is connected to the first baffle and the strengthening structure. A second space is formed between the first baffle, the second baffle, the bearing block, the strengthening structure, and the polyurethane foam in the first space, and the second space is filled with polyurethane foam.

[0011] As an implementation manner, the first baffle includes a horizontal plate and two vertical plates, and the two vertical plates are arranged opposite to each other on both sides of the horizontal plate.

[0012] As an implementation manner, the second baffle is in the shape of a hollow frustum of a pyramid, and the surface of the second baffle close to the strengthening structure is open.

[0013] As an implementation manner, an inspection hole is provided on the second baffle; alternatively, inspection holes are provided on both the first baffle and the second baffle.

[0014] As an implementation manner, the modular thermal insulation boards include multiple first precast thermal insulation boards, multiple second precast thermal insulation boards, multiple third precast thermal insulation boards, and multiple fourth precast thermal insulation boards; the first precast thermal insulation boards, the second precast thermal insulation boards, and the third precast thermal insulation boards are arranged around the strengthening structure. The first precast thermal insulation board is adjacent to the second precast thermal insulation board. The fourth precast thermal insulation board is filled between the first precast thermal insulation board and the third precast thermal insulation board, and between the second precast thermal insulation board and the third precast thermal insulation board. The first precast thermal insulation board, the second precast thermal insulation board, the third precast thermal insulation board, and the fourth precast thermal insulation board are spliced to form a plate shape;

[0015] The first prefabricated heat-insulating plate, the second prefabricated heat-insulating plate, the third prefabricated heat-insulating plate, and the fourth prefabricated heat-insulating plate each include an inner heat-insulating layer, a strengthening layer, and an outer heat-insulating layer that are stacked in sequence. The surface of the inner heat-insulating layer close to the liquid tank is the first surface, and the surface of the outer heat-insulating layer facing away from the strengthening layer is the second surface.

[0016] As an implementation manner, the surface of the inner heat-insulating layer adjacent to the strengthening layer is larger in area than the surface of the strengthening layer adjacent to the inner heat-insulating layer; the surface of the strengthening layer adjacent to the outer heat-insulating layer is the same as the surface of the outer heat-insulating layer adjacent to the strengthening layer; the area of the first surface is larger than the area of the second surface; a stepped structure is provided on the surface of the outer heat-insulating layer facing away from the strengthening layer;

[0017] Elastic heat-insulating layers are provided at the gaps between adjacent inner heat-insulating layers and at the gaps between adjacent outer heat-insulating layers.

[0018] As an implementation manner, prefabricated connecting plates are provided at the gaps between the outer heat-insulating layer of the first prefabricated heat-insulating plate and the outer heat-insulating layer of the fourth prefabricated heat-insulating plate, at the gaps between the outer heat-insulating layer of the second prefabricated heat-insulating plate and the outer heat-insulating layer of the fourth prefabricated heat-insulating plate, and at the gaps between the outer heat-insulating layer of the third prefabricated heat-insulating plate and the outer heat-insulating layer of the fourth prefabricated heat-insulating plate.

[0019] As an implementation manner, heat-insulating patches are provided at the edges of the second surfaces of the first prefabricated heat-insulating plate, the second prefabricated heat-insulating plate, and the third prefabricated heat-insulating plate close to the strengthening structure.

[0020] As an implementation manner, fixing components are provided at the gaps between the inner heat-insulating layers corresponding to the positions of the prefabricated connecting plates and between the inner heat-insulating layer and the strengthening structure corresponding to the positions of the heat-insulating patches;

[0021] The fixing component includes a fixing piece, a connecting column, a fixing stud, and a clamping bolt. One end of the fixing piece is connected to one end of the connecting column through the clamping bolt. The other end of the connecting column is threadedly connected to one end of the fixing stud. The other end of the fixing stud is connected to the fixing stud positioning portion on the outer surface of the liquid tank;

[0022] The fixing piece includes a reinforcing plate, a folded edge, a cavity portion, and a connecting portion. The cavity portion is provided with a hollow cavity, and an adiabatic plug block is arranged in the cavity; two folded edges are oppositely arranged on both sides of the cavity portion. The reinforcing plate is arranged on the surface of the folded edge facing away from the cavity portion. At least one folded edge abuts against the surface of the inner heat-insulating layer close to the strengthening layer; the connecting portion is arranged at the other end of the cavity portion, and the connecting portion is connected to the connecting column.

[0023] As an implementation manner, there is a certain included angle between the contact surface of the hem and the inner heat insulation layer, and the included angle is between 0° and 30°.

[0024] As an implementation manner, protective layers are provided on the second surface of the modular heat insulation board, the outer surface of the first baffle, and the outer surface of the second baffle.

[0025] Second, the present application also provides an installation method for an adiabatic system in the anti-sway support area of a liquid tank, including the following steps:

[0026] Complete the production of the first prefabricated heat insulation board, the second prefabricated heat insulation board, the third prefabricated heat insulation board, the fourth prefabricated heat insulation board, the prefabricated heat insulation block, the prefabricated connecting plate, the first baffle, the second baffle, the fixing component, and the protective layer according to the design requirements;

[0027] Complete the mesh division of the outer surface of the liquid tank and the positioning of the fixing studs according to the design requirements;

[0028] After grinding the paint at the positioning position of the fixing studs on the outer surface of the liquid tank until it is clean, weld the fixing studs. The grinding diameter is 20 mm to 30 mm, the coaxiality tolerance between the actual position of the fixing studs and their positioning position is 3 mm, and the angle between the fixing studs and the outer surface of the liquid tank is 87° to 93°;

[0029] Insert the prefabricated heat insulation block into the space with corresponding dimensions of the strengthening structure in the anti-sway support area of the liquid tank;

[0030] Within the limited range of the fixing studs on the outer surface of the liquid tank, install the first prefabricated heat insulation board, the second prefabricated heat insulation board, and the third prefabricated heat insulation board to be connected to the strengthening structure through the fixing component, and install the fourth prefabricated heat insulation board between the first prefabricated heat insulation board and the second prefabricated heat insulation board, and between the second prefabricated heat insulation board and the third prefabricated heat insulation board to form a modular heat insulation board;

[0031] Install the prefabricated connecting plate at the gap between any two adjacent prefabricated heat insulation boards in the modular heat insulation board;

[0032] Fix the first baffle on the second surface of the modular heat insulation board, cover the strengthening structure and the prefabricated heat insulation block in the anti-sway support area, and spray polyurethane foam into the first space formed by the first baffle, the strengthening structure, the prefabricated heat insulation block, and the second surface from the open spaces on the other two sides until it is close to the design shape;

[0033] Fix the second baffle around the pressure-bearing block in the anti-sway support area and cover the polyurethane foam sprayed in the first space;

[0034] Check whether the sprayed polyurethane foam is filled completely through the inspection holes on the first baffle and the second baffle and make supplementary spraying;

[0035] A protective layer is laid on the second surface of the modular insulating board, and the outer surfaces of the first baffle and the second baffle. The thickness of the protective layer is between 0.5 mm and 1.5 mm, and the width of the overlapping part of the protective layer is not less than 25 mm.

[0036] As described above, the insulation system and its installation method in the anti-sway support area of the liquid tank of the present application have the following beneficial effects:

[0037] The insulation system in the anti-sway support area of the liquid tank of the present application, through the combined design of prefabricated insulation boards, prefabricated insulation blocks and sprayed polyurethane foam, optimizes the structure and construction process of the insulation system, significantly improves the design and installation efficiency of the insulation system, and reduces the material and construction costs; through the integration of modular design and composite insulation technology, a highly integrated insulation system is formed, which can still maintain stable performance under low temperature, vibration and dynamic load conditions, ensuring the safe operation of the liquid tank and compliance with IMO regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It shows a front view structural schematic diagram of the liquid tank and the anti-sway support area.

[0039] Figure 2 It shows a three-dimensional structural schematic diagram of the liquid tank and the anti-sway support area.

[0040] Figure 3 It shows a three-dimensional structural schematic diagram of the insulation system in the anti-sway support area of the liquid tank according to the embodiment of the present invention.

[0041] Figure 4 It shows an exploded structural schematic diagram of the anti-sway support area of the liquid tank, prefabricated insulation blocks, the first baffle and the second baffle according to the embodiment of the present invention.

[0042] Figure 5 It shows a top view structural schematic diagram of the insulation system in the anti-sway support area of the liquid tank according to the embodiment of the present invention.

[0043] Figure 6 It shows Figure 5 a cross-sectional structural schematic diagram taken along the A-A direction in

[0044] Figure 7 It shows a structural schematic diagram of the first prefabricated insulation board in the insulation system in the anti-sway support area of the liquid tank according to the embodiment of the present invention.

[0045] Figure 8 It shows a structural schematic diagram of the second prefabricated insulation board in the insulation system in the anti-sway support area of the liquid tank according to the embodiment of the present invention.

[0046] Figure 9Schematic diagram showing the structure of the third prefabricated thermal insulation panel in the thermal insulation system of the liquid tank anti-sway support area according to an embodiment of the present invention.

[0047] Figure 10 Schematic diagram showing the structure of the fourth prefabricated thermal insulation panel in the thermal insulation system of the liquid tank anti-sway support area according to an embodiment of the present invention.

[0048] Figure 11 Schematic diagram showing the structure at the gap of the modular thermal insulation panel in the thermal insulation system of the liquid tank anti-sway support area according to an embodiment of the present invention.

[0049] Figure 12 Schematic diagram showing the structure of the fixing member in the fixing assembly according to an embodiment of the present invention.

[0050] Figure 13 Schematic diagram showing the structure of the thermal insulation patch in the thermal insulation system of the liquid tank anti-sway support area according to an embodiment of the present invention.

[0051] Figure 14 Schematic diagram showing the structure of the protruding structure in the thermal insulation system of the liquid tank anti-sway support area according to an embodiment of the present invention.

[0052] Figure 15 Schematic diagram showing the structure of the liquid tank applicable to the thermal insulation system of the liquid tank anti-sway support area according to an embodiment of the present invention.

[0053] Element symbol description

[0054] 100, liquid tank; 200, anti-sway support area; 210, strengthening structure; 220, pressure-bearing block; 300, prefabricated thermal insulation block; 400, modular thermal insulation panel; 401, first prefabricated thermal insulation panel; 402, second prefabricated thermal insulation panel; 403, third prefabricated thermal insulation panel; 404, fourth prefabricated thermal insulation panel; 410, inner thermal insulation layer; 420, strengthening layer; 430, outer thermal insulation layer; 431, step structure; 440, protruding structure; 450, elastic thermal insulation layer; 460, prefabricated connecting plate; 470, thermal insulation patch; 510, first baffle; 520, second baffle; 530, inspection hole; 600, polyurethane foam; 700, fixing assembly; 710, fixing member; 711, strengthening plate; 712, folded edge; 713, thermal insulation plug block; 720, connecting column; 730, fixing stud; 740, clamping bolt; 800, protective layer. Detailed implementation manners

[0055] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0056] Please refer to Figures 1 to 15 . It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present invention. Therefore, only the components related to the present invention are shown in the illustrations, rather than being drawn according to the number, shape, and size of the components in the actual embodiment. When actually implemented, the type, quantity, and proportion of each component can be arbitrarily changed, and the component layout type may also be more complex.

[0057] As Figure 1 and Figure 2 shown, the anti-sway support area 200 of the liquid tank 100 is provided at the top and bottom of the liquid tank 100, which refers to the anti-sway support structure itself and the planar area of the liquid tank 100 connected thereto. The anti-sway support area 200 includes a strengthening structure 210 and a pressure-bearing block 220. The inside of the strengthening structure 210 has a void, and the pressure-bearing blocks 220 are oppositely arranged on both sides of the strengthening structure 210.

[0058] This embodiment provides an adiabatic system for the anti-sway support area of a liquid tank. As Figures 3 to 6 shown, the adiabatic system includes a prefabricated insulation block 300, a modular insulation board 400, a first baffle 510, and a second baffle 520.

[0059] As Figure 4 shown, the prefabricated insulation block 300 is disposed within the void of the strengthening structure 210.

[0060] As Figure 3 shown, the modular insulation board 400 is formed by splicing a plurality of prefabricated insulation boards and is disposed around the strengthening structure 210. The modular insulation board 400 includes a first surface and a second surface that are oppositely arranged. The first surface of the modular insulation board 400 is laid on the outer surface of the liquid tank 100 near the anti-sway support area 200. A plurality of protruding structures 440 are provided on the first surface. The protruding structures 440 can form a gap between the first surface and the outer surface of the liquid tank 100, forming a through annular space, so that the cryogenic liquid cargo leaked after the main wall fails can be collected in a preset area along this channel. The protruding structures 440 can present different shapes. For example, as Figure 14 shown, the cross-section of the protruding structure 340 can be square, rectangular, circular, and triangular, and it protrudes from the first surface of the modular insulation board 400 near the outer surface of the liquid tank 100. The second surface of the modular insulation board 400 is disposed away from the outer surface of the liquid tank 100.

[0061] As Figure 3 , Figure 4 and Figure 6As shown in the figure, the first baffle 510 is disposed on the second surface of the modular insulation board 400 and wraps the reinforcing structure 210 and the prefabricated insulation block 300. A first space is formed between the first baffle 510, the reinforcing structure 210, the pressure-bearing block 220, and the second surface of the modular insulation board 400, and the first space is filled with polyurethane foam 600.

[0062] The second baffle 520 wraps the pressure-bearing block 220 and is connected to the first baffle 510 and the reinforcing structure 210. A second space is formed between the first baffle 510, the second baffle 520, the pressure-bearing block 220, the reinforcing structure 210, and the polyurethane foam 600 in the first space, and the second space is filled with polyurethane foam 600.

[0063] Since the polyurethane foam 600 is difficult to mold or has an irregular shape after molding, additional processing is required, including cutting, grinding, surface protection, etc. In this embodiment, by providing the first baffle 510 and the second baffle 520, the polyurethane foam 600 can be directly molded inside the baffle, which can save the process time of cutting and surface protection and improve the design and installation efficiency.

[0064] For the insulation system in the anti-sway support area of the liquid tank provided in this embodiment, the modular insulation board 400 and the prefabricated insulation block 300 provide a stable insulation skeleton, and the polyurethane foam 600 fills the gaps of the complex structure, simplifies the structure of the insulation system, improves the design and installation efficiency, reduces the cost of the insulation system, and improves the sealing and insulation capabilities of the anti-sway support area insulation system. The integration degree of this insulation system is high, and it can provide good insulation function in low-temperature environments.

[0065] As an implementation manner, as Figure 4 shown in the figure, the first baffle 510 includes a horizontal plate and two vertical plates, and the two vertical plates are oppositely disposed on both sides of the horizontal plate. The horizontal plate is disposed on the surface of the reinforcing structure 210 facing away from the outer surface of the liquid tank 100, and the two vertical plates are used to wrap the prefabricated insulation block 300 and the reinforcing structure 210.

[0066] The second baffle 520 is in the shape of a hollow frustum of a pyramid, and the surface of the second baffle 520 close to the reinforcing structure 210 is open for wrapping the pressure-bearing block 220.

[0067] As an implementation manner, an inspection hole 530 is provided on the second baffle 520. The inspection hole 530 is provided to facilitate spraying polyurethane foam 600 into the second space. After the polyurethane foam 600 is cured, its outer surface is polished to be flat so that the outer surface of the polyurethane foam 600 is flush with the outer surfaces of the first baffle 510 and the second baffle 520. When spraying polyurethane foam 600 into the first space, the polyurethane foam 600 can be sprayed into the first space through the gap between the first baffle 510 and the strengthening structure 210. Alternatively, inspection holes 530 are provided on both the first baffle 510 and the second baffle 520. At this time, the polyurethane foam in both the first space and the second space is sprayed through the inspection holes 530.

[0068] As an implementation manner, as Figure 3 、 Figure 5 and Figure 6 shown, the modular heat insulation board 400 includes a first prefabricated heat insulation board 401, a second prefabricated heat insulation board 402, a third prefabricated heat insulation board 403, and a fourth prefabricated heat insulation board 404; the first prefabricated heat insulation board 401, the second prefabricated heat insulation board 402, and the third prefabricated heat insulation board 403 are arranged around the strengthening structure 210, the first prefabricated heat insulation board 401 and the second prefabricated heat insulation board 402 are arranged adjacent to each other, and the fourth prefabricated heat insulation board 404 is filled between the first prefabricated heat insulation board 401 and the third prefabricated heat insulation board 403, and is also filled between the second prefabricated heat insulation board 402 and the third prefabricated heat insulation board 403. The first prefabricated heat insulation board 401, the second prefabricated heat insulation board 402, the third prefabricated heat insulation board 403, and the fourth prefabricated heat insulation board 404 are spliced to form a plate shape. Specifically, as Figure 3 and Figure 5 shown, the modular heat insulation board 400 includes two first prefabricated heat insulation boards 401, two second prefabricated heat insulation boards 402, two third prefabricated heat insulation boards 403, and four fourth prefabricated heat insulation boards 404. The first prefabricated heat insulation board 401 and the second prefabricated heat insulation board 402 are arranged on the same side of the strengthening structure 210, and the two first prefabricated heat insulation boards 401 are arranged oppositely on both sides of the strengthening structure 210, and the two second prefabricated heat insulation boards 402 are arranged oppositely on both sides of the strengthening structure 210; the two third prefabricated heat insulation boards 403 are arranged oppositely on the other two sides of the strengthening structure 210; two of the fourth prefabricated heat insulation boards 404 are respectively filled between the first prefabricated heat insulation board 401 and the third prefabricated heat insulation board 403, and the other two fourth prefabricated heat insulation boards 404 are respectively filled between the second prefabricated heat insulation board 402 and the third prefabricated heat insulation board 403.

[0069] The first prefabricated heat-insulating board 401, the second prefabricated heat-insulating board 402, the third prefabricated heat-insulating board 403, and the fourth prefabricated heat-insulating board 404 all include an inner heat-insulating layer 410, a strengthening layer 420, and an outer heat-insulating layer 430 that are stacked in sequence. The surface of the inner heat-insulating layer 410 close to the liquid tank 100 is the first surface, and the surface of the outer heat-insulating layer 430 facing away from the strengthening layer 420 is the second surface.

[0070] As an implementation manner, as Figures 6 to 10 shown, the surface of the inner heat-insulating layer 410 adjacent to the strengthening layer 420 is larger in area than the surface of the strengthening layer 420 adjacent to the inner heat-insulating layer 410. The surface of the strengthening layer 420 adjacent to the outer heat-insulating layer 430 is the same as the surface of the outer heat-insulating layer 430 adjacent to the strengthening layer 420. The area of the first surface is larger than the area of the second surface. Thus, the sides of the first prefabricated heat-insulating board 401, the second prefabricated heat-insulating board 402, the third prefabricated heat-insulating board 403, and the fourth prefabricated heat-insulating board 404 can form a stepped structure, facilitating the subsequent connection between the fixing component 700 and the interior of the modular heat-insulating board 400.

[0071] As Figures 6 to 10 shown, a stepped structure 431 is provided on the surface of the outer heat-insulating layer 430 facing away from the strengthening layer 420.

[0072] As Figure 11 shown, elastic heat-insulating layers 450 are provided at the gaps between adjacent inner heat-insulating layers 410 and at the gaps between adjacent outer heat-insulating layers 430.

[0073] As an implementation manner, as Figure 3 and Figure 5 shown, prefabricated connecting plates 460 are provided at the gaps between the outer heat-insulating layer 430 of the first prefabricated heat-insulating board 401 and the outer heat-insulating layer 430 of the fourth prefabricated heat-insulating board 404, at the gaps between the outer heat-insulating layer 430 of the second prefabricated heat-insulating board 402 and the outer heat-insulating layer 430 of the fourth prefabricated heat-insulating board 404, and at the gaps between the outer heat-insulating layer 430 of the third prefabricated heat-insulating board 403 and the outer heat-insulating layer 430 of the fourth prefabricated heat-insulating board 404. The prefabricated connecting plates 460 are provided with structures adapted to the stepped structure 431 to improve the sealing performance and connection strength between adjacent outer heat-insulating layers 430. Through the optimized design of the structure of the prefabricated connecting plates 460, the tight joint between adjacent prefabricated heat-insulating boards is ensured. Combining with the filling of the gaps with polyurethane foam, the heat bridge effect is effectively blocked, enhancing the overall sealing performance and heat-insulating ability of the anti-sway bearing area 200.

[0074] As an implementation manner, as Figure 3 、 Figure 5 、 Figures 7 to 9As shown, heat insulation patches 470 are provided at the edges near the strengthening structure 210 on the second surfaces of the first prefabricated heat insulation panel 401, the second prefabricated heat insulation panel 402, and the third prefabricated heat insulation panel 403.

[0075] The heat insulation patches 470 can have different shapes. For example, the shapes shown Figure 13 are all acceptable, and can be specifically designed according to actual process requirements.

[0076] As an implementation method, as shown Figure 11 in, fixing components 700 are provided at the gaps between the inner heat insulation layers 410 corresponding to the positions of the prefabricated connection plates 460, and between the inner heat insulation layer 410 and the strengthening structure 210 corresponding to the positions of the heat insulation patches 470. By using customized fixing components 700, the stable installation of the prefabricated heat insulation panels in the special-shaped area of the anti-sway support is achieved, overcoming the difficulties in processing and assembly caused by the complex structure in the traditional solution, and ensuring the uniform coverage and long-term structural stability of the modular heat insulation panels 400.

[0077] The fixing components 700 include fixing pieces 710, connecting columns 720, fixing studs 730, and clamping bolts 740. Threaded holes are provided at both ends of the connecting column 720. One end of the fixing piece 710 is connected to the connecting column 720 through the clamping bolt 740. The other end of the connecting column 720 is threadedly connected to one end of the fixing stud 730. The other end of the fixing stud 730 is connected to the fixing stud positioning part on the outer surface of the liquid tank 100. The fixing of the modular heat insulation panels 400 with complex structures is realized through the fixing components 700, reducing the processing and installation difficulties of the heat insulation system and improving the quality and reliability of the heat insulation system.

[0078] The fixing piece 710 includes a strengthening plate 711, flanges 712, a cavity part, and a connecting part. The cavity part is provided with a hollow cavity, and a heat insulation plug 713 is arranged in the cavity. The two flanges 712 are oppositely arranged on both sides of one end of the cavity part. The strengthening plate 711 is arranged on the surface of the flange 712 facing away from the cavity part. At least one flange 712 abuts against the surface of the inner heat insulation layer 410 close to the strengthening layer 420 (that is, the flange 712 can be arranged on the stepped structure on the side surface of the adjacent prefabricated heat insulation panel); the connecting part is arranged at the other end of the cavity part, and the connecting part is fixedly connected to the connecting column 720 through the clamping bolt 740. As a specific implementation method, as shown Figure 12 in, the combined structure of the cavity part and the connecting part of the fixing piece 710 is U-shaped. The two flanges 712 are arranged on both sides of the U-shaped opening and are perpendicular to the opening. The strengthening plate 711 extends from one flange 712 through the cavity part to cover the other flange 712. The strengthening plate 711 can prevent the fixing piece 710 from contracting and deforming inward, strengthen the fixing piece 710, and limit the deformation of the fixing piece 710.

[0079] As an implementation, as Figure 12 shown, there is a certain angle between the contact surface of the hem 712 and the inner thermal insulation layer 410, and the angle is between 0° and 30°. In this way, the fixing relationship between the hem 712 and its contact surface can be strengthened. Specifically, the angle can be, for example, 0°, 5°, 10°, 15°, 20°, 25°, 30°.

[0080] As an implementation, as Figure 5 shown, protective layers 800 are provided on the second surface of the modular thermal insulation board 400, the outer surface of the first baffle 510, and the outer surface of the second baffle 520. The protective layer 800 can enhance the tolerance of the thermal insulation system of the liquid tank 100 to the external environment, such as protection, waterproofing, and anti-activity, and adapt to the environmental challenges under the harsh working conditions of the ship.

[0081] As an implementation, as Figure 15 shown, the shape of the liquid tank 100 can be a rhombic tank, a special-shaped tank, a spherical tank, a square tank, etc. The material of the liquid tank 100 can be selected from one of low-temperature metal materials such as nickel steel, high-manganese steel, and aluminum alloy. The material of the anti-rolling support is the same as that of the liquid tank 100. The pressure-bearing block 220 is composed of one or more laminated woods and composite materials.

[0082] As an implementation, the inner thermal insulation layer 410, the outer thermal insulation layer 430, the thermal insulation patch 470, the thermal insulation plug 713, and the protruding structure 440 can all be composed of one or more thermal insulation materials and reinforcing materials. The thermal insulation materials include but are not limited to polyurethane foam, polystyrene foam, polyethylene foam, phenolic foam, polyimide foam, and aerogel. The reinforcing materials include but are not limited to glass fiber and hollow glass microspheres. The thermal insulation materials mentioned below can all be composed of the materials listed above, and will not be elaborated further.

[0083] As an implementation, the materials of the first baffle 510 and the second baffle 520 are selected from one or more of butyl tape, wood board, and thermal insulation materials.

[0084] As an implementation, the inner thermal insulation layer 410, the strengthening layer 420, and the outer thermal insulation layer 430 are bonded by a low-temperature adhesive. The strengthening layer 420 is composed of one or more grid-like materials, and the grid-like materials are selected from one or several of fiberglass aluminum foil grid cloth, carbon fiber grid cloth, and metal mesh.

[0085] As an implementation, the elastic thermal insulation layer 450 and the prefabricated connecting plate 460 are composed of one or more elastic thermal insulation materials, and the elastic thermal insulation materials are selected from one or several of glass wool, polyurethane foam, melamine foam, ethylene-vinyl acetate copolymer foam, polyethylene foam, polypropylene foam, and polyimide foam.

[0086] As an implementation manner, the protective layer 800 is composed of a thermoplastic polyolefin elastomer and a flexible fireproof layer. The thermoplastic polyolefin elastomer is selected from polyolefin resin materials such as polypropylene or polyethylene, and the flexible fireproof layer is selected from one or more of ceramic fiber cloth, fiberglass aluminum foil cloth, and aluminum silicate fiber felt.

[0087] This embodiment also provides an installation method for the heat insulation system in the anti-sway support area of the liquid tank, including the following steps:

[0088] S100. Produce the first prefabricated heat insulation board 401, the second prefabricated heat insulation board 402, the third prefabricated heat insulation board 403, the fourth prefabricated heat insulation board 404, the prefabricated heat insulation block 300, the prefabricated connecting plate 460, the first baffle 510, the second baffle 520, the fixing component 700, and the protective layer 800 according to the design requirements;

[0089] S200. Complete the grid division of the outer surface of the liquid tank 100 and the positioning of the fixing studs 730 according to the design requirements;

[0090] S300. After polishing the paint at the positioning position of the fixing studs on the outer surface of the liquid tank 100, weld the fixing studs 730. The polishing diameter is 20 mm, the coaxiality tolerance between the actual position of the fixing studs 730 and their positioning position is 3 mm, and the angle between the fixing studs 730 and the outer surface of the liquid tank 100 is 90°;

[0091] S400. Insert the prefabricated heat insulation block 300 into the space with corresponding dimensions of the strengthening structure 210 in the anti-sway support area 200 of the liquid tank 100;

[0092] S500. Within the limited interval of the fixing studs 730 on the outer surface of the liquid tank 100, install the first prefabricated heat insulation board 401, the second prefabricated heat insulation board 402, and the third prefabricated heat insulation board 403 to be connected to the strengthening structure 210 through the fixing component 700, and install the fourth prefabricated heat insulation board 404 between the first prefabricated heat insulation board 401 and the second prefabricated heat insulation board 402, and between the second prefabricated heat insulation board 402 and the third prefabricated heat insulation board 403 to form a modular heat insulation board 400;

[0093] S600. Install the prefabricated connecting plate 460 at the gap between any two adjacent prefabricated heat insulation boards in the modular heat insulation board 400;

[0094] S700. Fix the first baffle 510 on the second surface of the modular heat insulation board 400, cover the strengthening structure 210 and the prefabricated heat insulation block 300 in the anti-sway support area 200, and spray polyurethane foam 600 into the first space formed by the first baffle 510, the strengthening structure 210, the prefabricated heat insulation block 300, and the second surface from the open spaces on the other two sides until it is close to the designed shape;

[0095] S800. Fix the second baffle 520 around the pressure-bearing block 220 in the anti-sway support area 200 to cover the sprayed polyurethane foam 600 in the first space;

[0096] S900. Check whether the sprayed polyurethane foam is filled completely through the inspection holes 530 on the first baffle 510 and the second baffle 520 and perform supplementary spraying;

[0097] S1000. Lay a protective layer 800 on the second surface of the modular insulation board 400 and the outer surfaces of the first baffle 510 and the second baffle 520. The thickness of the protective layer 800 is 1.2 mm, and the width of the overlapping part of the protective layer 800 is 30 mm.

[0098] The above embodiments merely illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An adiabatic system for the anti-sway support area of a liquid tank, where the anti-sway support area is arranged at the top and bottom of the liquid tank, includes a strengthening structure and pressure-bearing blocks. The inside of the strengthening structure has voids, and the pressure-bearing blocks are oppositely arranged on both sides of the strengthening structure. It is characterized in that, The thermal insulation system comprises: A prefabricated insulation block is arranged in the gap of the reinforcement structure; A modular insulation panel, formed by splicing a plurality of prefabricated insulation panels, arranged around the reinforcement structure, the modular insulation panel comprising a first surface and a second surface arranged opposite to each other, the first surface being laid to the outer surface of the liquid tank near the anti-sway support area, and a protruding structure being arranged on the first surface, and the second surface being arranged away from the outer surface of the liquid tank; a first baffle, disposed above the second surface and wrapping the reinforcement structure and the prefabricated insulation block, wherein a first space is formed between the first baffle, the reinforcement structure, the pressure block and the second surface, and the first space is filled with polyurethane foam; A second baffle wraps the pressure block and is connected to the first baffle and the reinforcing structure. A second space is formed among the first baffle, the second baffle, the pressure block, the reinforcing structure, and the polyurethane foam in the first space. The second space is filled with polyurethane foam.

2. The thermal insulation system for the liquid tank anti-sway support area according to claim 1, characterized in that, The first baffle includes a horizontal plate and two vertical plates, and the two vertical plates are arranged oppositely on two sides of the horizontal plate.

3. The thermal insulation system for the liquid tank anti-sway support area according to claim 1 or 2, characterized in that, The second baffle is in the shape of a hollow quadrangular pyramid and is openly disposed close to the surface of the reinforcement structure.

4. The thermal insulation system for the liquid tank anti-sway support area according to any one of claims 1 to 3, characterized in that, The second baffle plate is provided with an inspection hole; or, both the first baffle plate and the second baffle plate are provided with inspection holes.

5. The thermal insulation system for the liquid tank anti-sway support area according to claim 1, characterized in that, The modular insulation panels include a plurality of first prefabricated insulation panels, a plurality of second prefabricated insulation panels, a plurality of third prefabricated insulation panels, and a plurality of fourth prefabricated insulation panels; the first prefabricated insulation panels, the second prefabricated insulation panels, and the third prefabricated insulation panels are arranged around the reinforcement structure, the first prefabricated insulation panels and the second prefabricated insulation panels are arranged adjacent to each other, the fourth prefabricated insulation panels are filled between the first prefabricated insulation panels and the third prefabricated insulation panels, and between the second prefabricated insulation panels and the third prefabricated insulation panels, and the first prefabricated insulation panels, the second prefabricated insulation panels, the third prefabricated insulation panels, and the fourth prefabricated insulation panels are spliced to form a plate shape; The first prefabricated insulation board, the second prefabricated insulation board, the third prefabricated insulation board, and the fourth prefabricated insulation board all include an inner insulation layer, a reinforcement layer, and an outer insulation layer stacked in sequence, the surface of the inner insulation layer close to the liquid tank is the first surface, and the surface of the outer insulation layer away from the reinforcement layer is the second surface.

6. The thermal insulation system for the liquid tank anti-sway support area according to claim 5, characterized in that, The surface of the inner insulation layer adjacent to the strengthening layer is larger than the surface of the strengthening layer adjacent to the inner insulation layer; the surface of the strengthening layer adjacent to the outer insulation layer is consistent with the surface of the outer insulation layer adjacent to the strengthening layer; the area of the first surface is larger than the area of the second surface; the surface of the outer insulation layer away from the strengthening layer is provided with a step structure; Elastic insulation layers are arranged at the gaps between adjacent inner insulation layers and at the gaps between adjacent outer insulation layers.

7. The thermal insulation system for the liquid tank anti-sway support area according to claim 6, characterized in that, Prefabricated connecting plates are provided at the gaps between the outer insulation layers of the first prefabricated insulation panel and the fourth prefabricated insulation panel, between the outer insulation layers of the second prefabricated insulation panel and the fourth prefabricated insulation panel, and between the outer insulation layers of the third prefabricated insulation panel and the fourth prefabricated insulation panel.

8. The thermal insulation system for the liquid tank anti-sway support area according to claim 7, characterized in that, Adiabatic filling blocks are provided at the edges of the second surfaces of the first prefabricated insulation panel, the second prefabricated insulation panel, and the third prefabricated insulation panel, close to the strengthening structure.

9. The thermal insulation system for the liquid tank anti-sway support area according to claim 8, characterized in that, Fixing components are provided at the gaps between the inner insulation layers corresponding to the positions of the prefabricated connecting plates, and between the inner insulation layer and the strengthening structure corresponding to the positions of the adiabatic filling blocks; The fixing component includes a fixing piece, a connecting column, a fixing stud, and a clamping bolt. One end of the fixing piece is connected to one end of the connecting column through the clamping bolt. The other end of the connecting column is threadedly connected to one end of the fixing stud. The other end of the fixing stud is connected to the fixing stud positioning point on the outer surface of the liquid tank; The fixing piece includes a reinforcing plate, a folded edge, a cavity part, and a connecting part. The cavity part is provided with a hollow cavity, and an adiabatic plug block is arranged in the cavity; the two folded edges are oppositely arranged on both sides of the cavity part. The reinforcing plate is arranged on the surface of the folded edge away from the cavity part. At least one folded edge abuts against the surface of the inner insulation layer close to the strengthening layer; the connecting part is arranged at the other end of the cavity part, and the connecting part is connected to the connecting column.

10. The thermal insulation system for the liquid tank anti-sway support area according to claim 7, characterized in that, There is a certain included angle between the contact surface of the folded edge and the inner insulation layer, and the included angle is between 0° and 30°.

11. The adiabatic system for the liquid tank anti-sway support area according to claim 1, characterized in that, Protective layers are provided on the second surfaces of the modular insulation panel, the outer surfaces of the first baffle, and the outer surfaces of the second baffle.

12. A method for installing an adiabatic system in a liquid tank anti-sway support area, characterized in that, It includes the following steps: Complete the production of the first prefabricated insulation panel, the second prefabricated insulation panel, the third prefabricated insulation panel, the fourth prefabricated insulation panel, the prefabricated insulation block, the prefabricated connecting plate, the first baffle, the second baffle, the fixing component, and the protective layer according to the design requirements; Complete the mesh division of the outer surface of the liquid tank and the positioning of the fixing studs according to the design requirements; After grinding the paint at the positioning position of the fixing studs on the outer surface of the liquid tank until it is clean, weld the fixing studs. The grinding diameter is 20 mm to 30 mm. The coaxiality tolerance between the actual position of the fixing stud and its positioning position is 3 mm. The angle between the fixing stud and the outer surface of the liquid tank is 87° to 93°; Insert the prefabricated insulation block into the space with corresponding dimensions of the strengthening structure in the anti-sway support area of the liquid tank; Within the defined interval of the fixing studs on the outer surface of the liquid tank, install the first prefabricated insulation panel, the second prefabricated insulation panel, and the third prefabricated insulation panel to connect with the strengthening structure through the fixing component, and install the fourth prefabricated insulation panel between the first prefabricated insulation panel and the second prefabricated insulation panel, and between the second prefabricated insulation panel and the third prefabricated insulation panel to form a modular insulation panel; Install prefabricated connecting plates at the gaps between any two adjacent prefabricated insulation panels in the modular insulation panel; Fix the first baffle on the second surface of the modular insulation board, covering the strengthening structure in the anti-sway bearing area and the prefabricated insulation block, and spray polyurethane foam into the first space formed by the first baffle, the strengthening structure, the prefabricated insulation block and the second surface from the open spaces on the other two sides until it is close to the designed shape; Fix the second baffle around the pressure-bearing block in the anti-sway bearing area, covering the polyurethane foam sprayed in the first space; Check whether the sprayed polyurethane foam is filled completely through the inspection holes on the first baffle and the second baffle and make supplementary spraying; Lay a protective layer on the second surface of the modular insulation board, the outer surfaces of the first baffle and the second baffle. The thickness of the protective layer is between 0.5 mm and 1.5 mm, and the width of the overlapping part of the protective layer is not less than 25 mm.

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