Heat insulation system of liquid tank floating stopping support area and installation method of heat insulation system

Abstract

The invention provides a heat insulation system for a liquid tank floating stopping support area. The heat insulation system comprises a modular heat insulation plate and a baffle. 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 baffle is arranged on the second surface of the modular heat insulation plate and surrounds the reinforcing structure, the pressure block fence and part of the pressure blocks, and a space is formed among the baffle, the reinforcing structure, the pressure block fence and part of the pressure blocks and filled with polyurethane foam. According to the heat insulation system, through the composite design of the prefabricated heat insulation plate and the sprayed polyurethane foam, the structure of the heat insulation system is simplified, the design efficiency is improved, and the material and manufacturing cost is reduced; through the modular composite heat insulation structural design, high integration level and structural reliability are achieved, the integrity of a heat insulation system is kept under the working conditions of low temperature, dynamic load and vibration, and it is ensured that a liquid tank operates safely and meets the IMO standard requirement.

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 for the buoyancy restraint support area of a liquid tank and an installation method thereof. 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 comply with the IMO IGC Code. As the core load-bearing structure for low-temperature liquefied gases, they need to have both strict liquid tightness and thermal insulation performance. According to the code requirements, such liquid tanks need to be provided with a thermal insulation system to limit the intrusion of external heat, maintain the stability of the temperature and pressure inside the tank, and at the same time form a leakage prevention diversion channel to safely guide any potentially escaped low-temperature liquid cargo to the secondary screen wall to avoid 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 prismatic tanks, special-shaped tanks, etc.) mainly adopt the solutions of spraying thermal insulation layers on the surface or installing prefabricated thermal insulation panels. However, the structures of such liquid tanks are complex, especially in their buoyancy restraint support areas. As the key components connecting the liquid tank and the hull, they need to bear the functions of buoyancy restraint and lifting. Their geometric shapes are irregular and they are subject to dynamic loads, resulting in difficulty in effectively covering and long-term stability with traditional thermal insulation solutions. Due to the significant structural irregularities, mechanical vibrations, and temperature deformations in the buoyancy restraint support area, a single spraying or prefabricated thermal insulation panel solution is prone to problems such as joint cracking, thermal insulation layer peeling off, or heat bridge effects, leading to a decline in thermal insulation performance and the failure of leakage diversion, threatening the safe operation of the liquid tank.

[0004] In addition, the thermal insulation system for the buoyancy restraint support area needs to take into account both structural strength and low-temperature protection requirements. The 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 thermal insulation system dedicated to the buoyancy restraint support area of independent Type B liquid tanks to solve the thermal insulation sealing under complex geometric structures and provide reliable technical support for the design and construction of ships equipped with new independent Type B liquid tanks. Summary of the Invention

[0005] In view of the defects and deficiencies of the prior art, the present application provides a thermal insulation system for the buoyancy restraint support area of a liquid tank and an installation method thereof to solve the problem of unsatisfactory thermal insulation effect in the buoyancy restraint support area of the liquid tank in the prior art.

[0006] To achieve the above and other related objectives, in a first aspect, the present application provides an adiabatic system for a floating support area of a liquid tank. The floating support area is provided at the upper part of the liquid tank and includes a strengthening structure disposed close to the outer surface of the liquid tank, a pressure block facing away from the outer surface of the liquid tank and connected to the strengthening structure, a pressure block fence disposed around the pressure block and close to the strengthening structure, and a lifting hole provided on a part of the strengthening structure. The adiabatic system includes:

[0007] Modular adiabatic plates, formed by splicing a plurality of prefabricated adiabatic plates, disposed around the strengthening structure. The modular adiabatic plates include a first surface and a second surface disposed opposite to each other. The first surface is laid on the outer surface of the liquid tank close to the floating support area, and a protruding structure is provided on the first surface. The second surface is disposed away from the outer surface of the liquid tank;

[0008] A baffle, disposed on the second surface and around the strengthening structure, the pressure block fence, and a part of the pressure block. A space is formed between the baffle, the strengthening structure, the pressure block fence, and a part of the pressure block, and the space is filled with polyurethane foam.

[0009] As an implementation manner, an inspection hole is provided on the baffle.

[0010] As an implementation manner, the height difference between the connection of the baffle and the pressure block and the surface of the pressure block facing away from the strengthening structure is between 5 mm and 100 mm.

[0011] As an implementation manner, the modular adiabatic plates are in a plate-like structure and include a first prefabricated adiabatic plate, a second prefabricated adiabatic plate, a third prefabricated adiabatic plate, a fourth prefabricated adiabatic plate, and a fifth prefabricated adiabatic plate. The third prefabricated adiabatic plate, the second prefabricated adiabatic plate, the first prefabricated adiabatic plate, the first prefabricated adiabatic plate, the second prefabricated adiabatic plate, and the fourth prefabricated adiabatic plate are sequentially disposed around the strengthening structure in a clockwise direction. The fifth prefabricated adiabatic plate is disposed between the third prefabricated adiabatic plate and the fourth prefabricated adiabatic plate;

[0012] The first prefabricated adiabatic plate, the second prefabricated adiabatic plate, the third prefabricated adiabatic plate, the fourth prefabricated adiabatic plate, and the fifth prefabricated adiabatic plate each include an inner adiabatic layer, a strengthening layer, and an outer adiabatic layer stacked in sequence. The surface of the inner adiabatic layer close to the liquid tank is the first surface, and the surface of the outer adiabatic layer facing away from the strengthening layer is the second surface.

[0013] As an implementation manner, the surface of the inner heat-insulating layer adjacent to the strengthening layer has a larger 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.

[0014] 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.

[0015] As an implementation manner, heat-insulating patches are provided on the second surfaces of 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 that are connected to the strengthening structure.

[0016] Connection plates are provided at the gaps between the third prefabricated heat-insulating plate and the fifth prefabricated heat-insulating plate and at the gaps between the fourth prefabricated heat-insulating plate and the fifth prefabricated heat-insulating plate.

[0017] As an implementation manner, fixing components are provided at the gaps between the inner heat-insulating layers corresponding to the positions of the connection plates and between the inner heat-insulating layer and the strengthening structure corresponding to the positions of the heat-insulating patches.

[0018] 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.

[0019] The fixing piece includes a reinforcing rib, a flanging, 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 flangings are oppositely arranged on both sides of the cavity portion. The reinforcing rib is arranged along the flanging and the cavity. At least one flanging 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.

[0020] As an implementation manner, a fold angle is provided on the flanging.

[0021] As an implementation manner, a notch corresponding to the strengthening structure is provided on the second prefabricated heat-insulating plate.

[0022] As an implementation manner, protective layers are provided on the second surface of the modular heat-insulating plate and the outer surface of the baffle.

[0023] In a second aspect, the present application also provides an installation method for an adiabatic system in the anti-floating support area of a liquid tank, including the following steps:

[0024] Produce the first prefabricated insulation board, the second prefabricated insulation board, the third prefabricated insulation board, the fourth prefabricated insulation board, the fifth prefabricated insulation board, the connecting plate, the baffle plate, the fixing assembly and the protective layer according to the design requirements;

[0025] Complete the grid division of the outer surface of the liquid tank and the positioning of the fixing studs according to the design requirements;

[0026] 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°;

[0027] Within the limited interval of the fixing studs on the outer surface of the liquid tank, install the first prefabricated insulation board, the second prefabricated insulation board, the third prefabricated insulation board, and the fourth prefabricated insulation board to be connected to the strengthening structure through the fixing assembly, and install the fifth prefabricated insulation board between the third prefabricated insulation board and the fourth prefabricated insulation board to form a modular insulation board;

[0028] Install the connecting plate at the gap between the third prefabricated insulation board and the fifth prefabricated insulation board, and at the gap between the fourth prefabricated insulation board and the fifth prefabricated insulation board in the modular insulation board;

[0029] The baffle plates for laying in the anti-floating support area of the liquid tank are divided into two groups, each group includes two baffle plates arranged oppositely. Fix one group of baffle plates at a certain thickness from the second surface to the pressure block in advance, spray polyurethane foam into the anti-floating support area from the open spaces on the other two sides. When the sprayed polyurethane foam is close to the designed shape, finish spraying, and install the other group of baffle plates;

[0030] Check whether the sprayed polyurethane foam is filled completely through the inspection holes on the baffle plates and make supplementary spraying;

[0031] Lay the protective layer on the second surface of the modular insulation board and the outer surface of the baffle plates. The thickness of the protective layer is between 0.5 mm and 1.5 mm, the overlapping width of the outer protective layer and the baffle plate surface is not less than 25 mm, and the overlapping length of the outer protective layer at the joint is not less than 200 mm.

[0032] As described above, the adiabatic system in the anti-floating support area of the liquid tank and its installation method of the present application have the following beneficial effects:

[0033] The insulation system for the liquid tank anti-floating support area of the present application simplifies the insulation system structure, improves the design efficiency, and reduces the material and manufacturing costs through the composite design of prefabricated insulation boards and sprayed polyurethane foam; through the modular composite insulation structure design, high integration and structural reliability are achieved, and the integrity of the insulation system is maintained under low-temperature, dynamic load, and vibration conditions, ensuring the safe operation of the liquid tank and meeting the requirements of IMO specifications. Brief Description of the Drawings

[0034] Figure 1 Shown is a front view structural schematic diagram of the liquid tank and the anti-floating support area.

[0035] Figure 2 Shown is a three-dimensional structural schematic diagram of the liquid tank and the anti-floating support area.

[0036] Figure 3 Shown is a three-dimensional structural schematic diagram of the insulation system for the liquid tank anti-floating support area according to an embodiment of the present invention.

[0037] Figure 4 Shown is a top view structural schematic diagram of the insulation system for the liquid tank anti-floating support area according to an embodiment of the present invention.

[0038] Figure 5 Shown as Figure 4 a cross-sectional structural schematic diagram along the A-A direction in

[0039] Figure 6 Shown is a structural schematic diagram of the first prefabricated insulation board in the insulation system for the liquid tank anti-floating support area according to an embodiment of the present invention.

[0040] Figure 7 Shown is a structural schematic diagram of the second prefabricated insulation board in the insulation system for the liquid tank anti-floating support area according to an embodiment of the present invention.

[0041] Figure 8 Shown is a structural schematic diagram of the third prefabricated insulation board in the insulation system for the liquid tank anti-floating support area according to an embodiment of the present invention.

[0042] Figure 9 Shown is a structural schematic diagram of the fourth prefabricated insulation board in the insulation system for the liquid tank anti-floating support area according to an embodiment of the present invention.

[0043] Figure 10 Shown is a structural schematic diagram of the fifth prefabricated insulation board in the insulation system for the liquid tank anti-floating support area according to an embodiment of the present invention.

[0044] Figure 11 Shown is a structural schematic diagram of the gap of the modular insulation board in the insulation system for the liquid tank anti-floating support area according to an embodiment of the present invention.

[0045] Figure 12It shows a schematic structural view of the fixing member in the fixing assembly according to an embodiment of the present invention.

[0046] Figure 13 It shows a schematic structural view of the protruding structure in the heat insulation system of the liquid tank anti-floating support area according to an embodiment of the present invention.

[0047] Figure 14 It shows a schematic structural view of the heat insulation patch in the heat insulation system of the liquid tank anti-floating support area according to an embodiment of the present invention.

[0048] Figure 15 It shows a schematic structural view of the liquid tank applicable to the heat insulation system of the liquid tank anti-floating support area according to an embodiment of the present invention.

[0049] Element symbol description

[0050] 100, liquid tank; 200, anti-floating support area; 210, strengthening structure; 220, pressure block; 230, pressure block fence; 240, lifting hole; 300, modular heat insulation board; 301, first prefabricated heat insulation board; 302, second prefabricated heat insulation board; 303, third prefabricated heat insulation board; 304, fourth prefabricated heat insulation board; 305, fifth prefabricated heat insulation board; 306, protruding structure; 310, inner heat insulation layer; 320, strengthening layer; 330, outer heat insulation layer; 331, step structure; 340, elastic heat insulation layer; 350, heat insulation patch; 360, connecting plate; 370, notch; 400, baffle; 410, inspection hole; 500, polyurethane foam; 600, fixing assembly; 610, fixing member; 611, reinforcing rib; 612, flanging; 613, folding angle; 614, heat insulation plug block; 620, connecting column; 630, clamping bolt; 700, protective layer. Detailed implementation manners

[0051] The following illustrates the implementation manners of the present invention through specific specific examples. 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. 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.

[0052] Please refer to Figures 1 to 15 Note 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. The type, quantity, and ratio of each component in its actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0053] Such as Figure 1 and Figure 2As shown in the figure, the anti-floating support area 200 of the liquid tank 100 is arranged at the upper part of the liquid tank 100, referring to the anti-floating support structure itself and the planar area of the liquid tank 100 connected thereto. The anti-floating support area 200 includes a strengthening structure 210 arranged close to the outer surface of the liquid tank 100, a pressure block 220 facing away from the outer surface of the liquid tank 100 and connected to the strengthening structure 210, a pressure block fence 230 arranged around the pressure block 220 and close to the strengthening structure 210, and a lifting hole 240 arranged on a part of the strengthening structure 210.

[0054] This embodiment provides an adiabatic system for the bottom support area of a liquid tank. As Figures 3 to 5 shown, this adiabatic system includes a modular adiabatic board 300 and a baffle 400.

[0055] As Figure 3 and Figure 4 shown, the modular adiabatic board 300 is formed by splicing a plurality of prefabricated adiabatic boards and is arranged around the strengthening structure 210. The modular adiabatic board 300 includes a first surface and a second surface arranged oppositely. The first surface of the modular adiabatic board 300 is laid on the outer surface of the liquid tank 100 close to the anti-floating support area 200. A plurality of protruding structures 306 are arranged on the first surface. The protruding structures 306 can make 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 screen wall fails is collected in a preset area along this channel. The protruding structures 306 can present different shapes. For example, as Figure 13 shown, the cross-section of the protruding structure 306 can be square, rectangular, circular, and triangular, and it protrudes from the first surface of the modular adiabatic board 300 close to the outer surface of the liquid tank 100. The second surface of the modular adiabatic board 300 is arranged away from the outer surface of the liquid tank 100.

[0056] As Figures 3 to 5 shown, the baffle 400 is arranged on the second surface of the modular adiabatic board 300 and is arranged around the strengthening structure 210, the pressure block fence 230, and a part of the pressure block 220. A space is formed between the baffle 400, the strengthening structure 210, the pressure block fence 230, and a part of the pressure block 220, and a polyurethane foam 500 is filled in the space.

[0057] Since the polyurethane foam 500 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 arranging the baffle 400, the polyurethane foam 500 can be directly molded in the baffle 400, which can save the process time of cutting and surface protection and improve the design and installation efficiency.

[0058] The thermal insulation system for the liquid tank anti-floating support area provided in this embodiment. The modular thermal insulation board 300 provides a stable thermal insulation framework, and the polyurethane foam 500 fills the gaps of complex structures, simplifies the structure of the thermal insulation system, improves the design and installation efficiency, reduces the cost of the thermal insulation system, and improves the sealing performance and thermal insulation capacity of the anti-floating support area thermal insulation system. The integration degree of this thermal insulation system is high, and it can provide good thermal insulation function in low-temperature environment.

[0059] As an implementation manner, as Figure 3 and Figure 4 shown, an inspection hole 410 is provided on the baffle 400. The inspection hole 410 is provided to facilitate spraying the polyurethane foam 500 into the space. After the polyurethane foam 500 is cured, its outer surface is polished to be flat, and the outer surface of the polyurethane foam 500 is flush with the outer surface of the baffle 400. The shape of the inspection hole 410 can be, for example, circular, square, oval, rectangular and other shapes.

[0060] As an implementation manner, as Figure 5 shown, the height difference H between the connection part of the baffle 400 and the pressure block 220 and the surface of the pressure block 220 facing away from the strengthening structure 210 is between 5 mm and 100 mm. Optionally, the height difference H can be, for example, any one of the values of 5 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, or a value selected between any two of the above values.

[0061] As an implementation manner, as Figure 3 and Figure 4 shown, the modular thermal insulation board 300 includes a first prefabricated thermal insulation board 301, a second prefabricated thermal insulation board 302, a third prefabricated thermal insulation board 303, a fourth prefabricated thermal insulation board 304 and a fifth prefabricated thermal insulation board 305. The third prefabricated thermal insulation board 303, the second prefabricated thermal insulation board 302, the first prefabricated thermal insulation board 301, the first prefabricated thermal insulation board 301, the second prefabricated thermal insulation board 302 and the fourth prefabricated thermal insulation board 304 are sequentially arranged around the strengthening structure 210 in the clockwise direction; a fifth prefabricated thermal insulation board 305 is arranged between the third prefabricated thermal insulation board 303 and the fourth prefabricated thermal insulation board 304, and the fifth prefabricated thermal insulation board 305 is arranged in the plane area of the outer surface of the liquid tank 100 close to the strengthening structure 210.

[0062] As Figures 5 to 10 shown, the first prefabricated thermal insulation board 301, the second prefabricated thermal insulation board 302, the third prefabricated thermal insulation board 303, the fourth prefabricated thermal insulation board 304, and the fifth prefabricated thermal insulation board 305 all include an inner thermal insulation layer 310, a strengthening layer 320 and an outer thermal insulation layer 330 which are sequentially stacked. The surface of the inner thermal insulation layer 310 close to the liquid tank 100 is the first surface, and the surface of the outer thermal insulation layer 330 facing away from the strengthening layer 320 is the second surface.

[0063] As an implementation manner, as Figures 5 to 10 shown, the surface of the inner thermal insulation layer 310 adjacent to the strengthening layer 320 is larger in area than the surface of the strengthening layer 320 adjacent to the inner thermal insulation layer 310. The surface of the strengthening layer 320 adjacent to the outer thermal insulation layer 330 is the same as the surface of the outer thermal insulation layer 330 adjacent to the strengthening layer 320. The area of the first surface is larger than the area of the second surface. Thus, the sides of the first prefabricated thermal insulation board 301, the second prefabricated thermal insulation board 302, the third prefabricated thermal insulation board 303, the fourth prefabricated thermal insulation board 304, and the fifth prefabricated thermal insulation board 305 can form a stepped structure, facilitating the subsequent connection between the fixing component 600 and the interior of the modular thermal insulation board 300.

[0064] A stepped structure 331 is provided on the surface of the outer thermal insulation layer 330 facing away from the strengthening layer 320.

[0065] As Figure 11 shown, elastic thermal insulation layers 340 are provided at the gaps between adjacent inner thermal insulation layers 310 and at the gaps between adjacent outer thermal insulation layers 330.

[0066] As an implementation manner, as Figures 6 to 9 shown, thermal insulation patches 350 are provided at the edges of the second surfaces of the first prefabricated thermal insulation board 301, the second prefabricated thermal insulation board 302, the third prefabricated thermal insulation board 303, and the fourth prefabricated thermal insulation board 304 that are in contact with the strengthening structure 210. The thermal insulation patches 350 can have different shapes, for example, the shapes as Figure 14 shown are all acceptable, and can be specifically designed according to actual process requirements.

[0067] As Figure 3 and Figure 4 shown, connecting plates 360 are provided at the gaps between the third prefabricated thermal insulation board 303 and the fifth prefabricated thermal insulation board 305 and at the gaps between the fourth prefabricated thermal insulation board 304 and the fifth prefabricated thermal insulation board 305. The connecting plates 360 are provided with structures adapted to the stepped structure 331 to improve the sealing performance and connection strength of the gaps between the third prefabricated thermal insulation board 303 and the fifth prefabricated thermal insulation board 305, and to improve the sealing performance and connection strength of the gaps between the fourth prefabricated thermal insulation board 304 and the fifth prefabricated thermal insulation board 305.

[0068] As an implementation manner, as Figure 11As shown, a fixing assembly 600 is provided at the gap between the inner insulation layer 310 corresponding to the position of the connecting plate 360 and between the inner insulation layer 310 and the strengthening structure 210 corresponding to the position of the insulation patch 350. By using the customized fixing assembly 600, the prefabricated insulation board in the special-shaped area of the anti-floating bearing can be stably installed, 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 insulation board 300.

[0069] The fixing assembly 600 includes a fixing part 610, a connecting column 620, a fixing stud and a clamping bolt 630. Both ends of the connecting column 620 are provided with internal threads. One end of the fixing part 610 is connected to the connecting column 620 through the clamping bolt 630. The other end of the connecting column 620 is threadedly connected to one end of the fixing stud, and the other end of the fixing stud is connected to the fixing stud positioning part on the outer surface of the liquid tank 100. Through the fixing assembly 600, the fixing of the modular insulation board 300 with a complex structure is realized, reducing the processing and installation difficulty of the insulation system and improving the quality and reliability of the insulation system.

[0070] As Figure 12 shown, the fixing part 610 includes a reinforcing rib 611, a flanging 612, a cavity part and a connecting part. The cavity part is provided with a hollow cavity, and an insulation plug 614 is arranged in the cavity. Two flangings 612 are oppositely arranged on both sides of one end of the cavity part. The reinforcing rib 611 is arranged on the surface of the flanging 612 facing away from the cavity part. At least one flanging 612 abuts against the surface of the inner insulation layer 310 close to the strengthening layer 320 (that is, the flanging 612 can be arranged on the stepped structure on the side surface of the adjacent prefabricated insulation board); the connecting part is arranged at the other end of the cavity part, and the connecting part is fixedly connected to the connecting column 620 through the progressive bolt 630. As a specific implementation manner, the combined structure of the cavity part and the connecting part of the fixing part 610 is U-shaped, and two flangings 612 are arranged on both sides of the U-shaped opening and are perpendicular to the opening. The reinforcing rib 611 extends from one flanging 612 through the inside of the cavity part to cover the other flanging 612. The reinforcing rib 611 can prevent the fixing part 610 from shrinking and deforming inward, play a strengthening role on the fixing part 610, and limit the deformation of the fixing part 610.

[0071] As an implementation manner, as Figure 12 shown, a folding angle 613 is arranged on the flanging 612.

[0072] As an implementation manner, as Figure 7 shown, a notch 370 corresponding to the strengthening structure 210 is arranged on the second prefabricated insulation board 302.

[0073] As an implementation manner, as Figure 4As shown, a protective layer 700 is provided on both the second surface of the modular heat-insulating plate 300 and the outer surface of the baffle 400. The protective layer 700 can enhance the tolerance of the heat-insulating system of the liquid tank 100 to the external environment, such as protection, waterproofness, and anti-activity.

[0074] 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-floating support is consistent with that of the liquid tank 100. The pressure block 220 is composed of one or more laminated woods and composite materials.

[0075] As an implementation, the inner heat-insulating layer 310, the outer heat-insulating layer 330, the heat-insulating patch 350, the heat-insulating plug 614, and the protruding structure 306 can all be composed of one or more heat-insulating materials and reinforcing materials. The heat-insulating 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 heat-insulating materials mentioned below can all be composed of the materials listed above, and will not be elaborated further.

[0076] As an implementation, the material of the baffle 400 is selected from one or more of butyl tape, wood board, and heat-insulating materials.

[0077] As an implementation, the inner heat-insulating layer 310, the strengthening layer 320, and the outer heat-insulating layer 330 are bonded by a low-temperature adhesive. The strengthening layer 320 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.

[0078] As an implementation, the elastic heat-insulating layer 340 and the connecting plate 360 are composed of one or more elastic heat-insulating materials, and the elastic heat-insulating 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.

[0079] As an implementation, the protective layer 700 is composed of a thermoplastic polyolefin elastomer and a flexible fireproof layer. The thermoplastic polyolefin elastomer is made of polyolefin resin materials such as polypropylene or polyethylene, and the flexible fireproof layer is selected from one or several of ceramic fiber cloth, fiberglass aluminum foil cloth, and aluminum silicate fiber felt.

[0080] This embodiment also provides an installation method for the heat-insulating system in the bottom support area of the liquid tank, including the following steps:

[0081] S100. Complete the production of the first prefabricated heat insulation board 301, the second prefabricated heat insulation board 302, the third prefabricated heat insulation board 303, the fourth prefabricated heat insulation board 304, the fifth prefabricated heat insulation board 305, the connecting plate 360, the baffle 400, the fixing component 600 and the protective layer 700 according to the design requirements;

[0082] S200. Complete the mesh division of the outer surface of the liquid tank 100 and the positioning of the fixing studs according to the design requirements;

[0083] S300. After grinding the paint at the positioning position of the fixing studs on the outer surface of the liquid tank 100, weld the fixing studs. The grinding diameter is 30 mm, the coaxiality tolerance between the actual position and the positioning position of the fixing studs is 3 mm, and the angle between the fixing studs and the outer surface of the liquid tank 100 is 90°;

[0084] S400. Within the defined interval of the fixing studs on the outer surface of the liquid tank 100, install the first prefabricated heat insulation board 301, the second prefabricated heat insulation board 302, the third prefabricated heat insulation board 303, and the fourth prefabricated heat insulation board 304 to be connected to the strengthening structure 210 through the fixing component 600, and install the fifth prefabricated heat insulation board 305 between the third prefabricated heat insulation board 303 and the fourth prefabricated heat insulation board 304 to form the modular heat insulation board 300;

[0085] S500. Install the connecting plate 360 at the gaps between the third prefabricated heat insulation board 303 and the fifth prefabricated heat insulation board 305, and between the fourth prefabricated heat insulation board 304 and the fifth prefabricated heat insulation board 305 in the modular heat insulation board 300;

[0086] S600. Divide the baffles 400 for laying the anti-floating support area 200 of the liquid tank 100 into two groups, each group includes two oppositely arranged baffles. Fix one group of baffles 400 at a certain thickness from the second surface to the pressure block 220 in advance, spray polyurethane foam 500 into the anti-floating support area 200 from the open spaces on the other two sides. When the sprayed polyurethane foam 500 is close to the designed shape, finish spraying and install the other group of baffles 400;

[0087] S700. Check whether the sprayed polyurethane foam 500 is filled completely through the inspection holes 410 on the baffles 400 and perform supplementary spraying;

[0088] S800. Lay the protective layer 700 on the second surface of the modular heat insulation board 300 and the outer surface of the baffles 400. The thickness of the protective layer 700 is 1.2 mm, the overlapping width of the outer protective layer 700 and the surface of the baffles 400 is 30 mm, and the overlapping length of the outer protective layer 700 at the joint is 220 mm.

[0089] The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit 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 made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An adiabatic system for the floating support area of a liquid tank, the floating support area being arranged at the upper part of the liquid tank, comprising a strengthening structure arranged close to the outer surface of the liquid tank, a pressure block facing away from the outer surface of the liquid tank and connected to the strengthening structure, a pressure block fence arranged around the pressure block and close to the strengthening structure, and a lifting hole arranged on part of the strengthening structure, characterized in that The adiabatic system includes: Modular adiabatic plates, which are formed by splicing multiple prefabricated adiabatic plates, are arranged around the strengthening structure. The modular adiabatic plates 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-floating 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; Baffles are arranged on the second surface and surround the strengthening structure, the pressure block fence, and part of the pressure blocks. A space is formed between the baffles, the strengthening structure, the pressure block fence, and part of the pressure blocks, and the space is filled with polyurethane foam.

2. The thermal insulation system for the liquid tank anti-floating support area according to claim 1, characterized in that, An inspection hole is provided on the baffle.

3. The thermal insulation system for the liquid tank anti-floating support area according to claim 1 or 2, characterized in that, The height difference between the connection of the baffle and the pressure block and the surface of the pressure block facing away from the strengthening structure is between 5 mm and 100 mm.

4. The thermal insulation system for the liquid tank anti-floating support area according to claim 1, wherein, The modular adiabatic plate has a plate-like structure and includes a first prefabricated adiabatic plate, a second prefabricated adiabatic plate, a third prefabricated adiabatic plate, a fourth prefabricated adiabatic plate, and a fifth prefabricated adiabatic plate; The third prefabricated adiabatic plate, the second prefabricated adiabatic plate, the first prefabricated adiabatic plate, the first prefabricated adiabatic plate, the second prefabricated adiabatic plate, and the fourth prefabricated adiabatic plate are sequentially arranged around the strengthening structure in the clockwise direction; the fifth prefabricated adiabatic plate is arranged between the third prefabricated adiabatic plate and the fourth prefabricated adiabatic plate; The first prefabricated adiabatic plate, the second prefabricated adiabatic plate, the third prefabricated adiabatic plate, the fourth prefabricated adiabatic plate, and the fifth prefabricated adiabatic plate all include an inner adiabatic layer, a strengthening layer, and an outer adiabatic layer stacked in sequence. The surface of the inner adiabatic layer close to the liquid tank is the first surface, and the surface of the outer adiabatic layer facing away from the strengthening layer is the second surface.

5. The thermal insulation system for the liquid tank anti-floating support area according to claim 4, characterized in that, The surface of the inner adiabatic layer adjacent to the strengthening layer is larger in area than the surface of the strengthening layer adjacent to the inner adiabatic layer; the surface of the strengthening layer adjacent to the outer adiabatic layer is the same as the surface of the outer adiabatic 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 adiabatic layer facing away from the strengthening layer; Elastic adiabatic layers are provided at the gaps between adjacent inner adiabatic layers and at the gaps between adjacent outer adiabatic layers.

6. The thermal insulation system for the liquid tank anti-floating support area according to claim 4, characterized in that, Adiabatic patches are provided at the edges of the second surfaces of the first prefabricated adiabatic plate, the second prefabricated adiabatic plate, the third prefabricated adiabatic plate, and the fourth prefabricated adiabatic plate that are connected to the strengthening structure; Connection plates are provided at the gaps between the third prefabricated adiabatic plate and the fifth prefabricated adiabatic plate and at the gaps between the fourth prefabricated adiabatic plate and the fifth prefabricated adiabatic plate.

7. The thermal insulation system for the liquid tank anti-floating support area according to claim 6, characterized in that, Fixing components are provided at the gaps between the inner adiabatic layers corresponding to the positions of the connection plates and between the inner adiabatic layer and the strengthening structure corresponding to the positions of the adiabatic patches; The fixing component includes a fixing piece, a connecting column, a fixing stud and a clamping bolt. One end of the connecting column is connected to the fixing piece by the clamping bolt, the other end of the connecting column is threadedly connected to one end of the fixing stud, and the other end of the fixing stud is connected to the fixing stud positioning part on the outer surface of the liquid tank; The fixing piece includes a reinforcing rib, a flanging, 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 flangings are oppositely arranged on both sides of the cavity part, the reinforcing rib is arranged along the flanging and the cavity, and at least one flanging abuts against the surface of the inner adiabatic 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.

8. The adiabatic system for the liquid tank anti-floating support area according to claim 7, characterized in that, A folding angle is arranged on the flanging.

9. The adiabatic system for the liquid tank anti-floating support area according to claim 4, characterized in that, A notch corresponding to the strengthening structure is arranged on the second prefabricated insulating board.

10. The adiabatic system for the liquid tank anti-floating support area according to claim 1, characterized in that, Protective layers are arranged on the second surface of the modular insulating board and the outer surface of the baffle.

11. An installation method for an adiabatic system in a liquid tank anti-floating support area, characterized in that, It includes the following steps: Complete the production of the first prefabricated insulating board, the second prefabricated insulating board, the third prefabricated insulating board, the fourth prefabricated insulating board, the fifth prefabricated insulating board, the connecting plate, the 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 stud according to the design requirements; After grinding the paint at the positioning position of the fixing stud on the outer surface of the liquid tank until it is clean, weld the fixing stud. The grinding diameter is 20mm - 30mm, the coaxiality tolerance between the actual position of the fixing stud and its positioning position is 3mm, and the angle between the fixing stud and the outer surface of the liquid tank is 87° - 93°; Within the defined interval of the fixing stud on the outer surface of the liquid tank, install the first prefabricated insulating board, the second prefabricated insulating board, the third prefabricated insulating board, and the fourth prefabricated insulating board to be connected to the strengthening structure through the fixing component, and install the fifth prefabricated insulating board between the third prefabricated insulating board and the fourth prefabricated insulating board to form a modular insulating board; Install connecting plates at the gaps between the third prefabricated insulating board and the fifth prefabricated insulating board, and between the fourth prefabricated insulating board and the fifth prefabricated insulating board in the modular insulating board; The baffles for laying the anti - floating support area of the liquid tank are divided into two groups, each group includes two oppositely arranged baffles. Fix one group of baffles at a certain thickness from the second surface to the pressure block in advance, spray polyurethane foam into the anti - floating support area from the open spaces on the other two sides. When the sprayed polyurethane foam is close to the designed shape, finish spraying, and install the other group of baffles; Check whether the sprayed polyurethane foam is filled completely through the inspection holes on the baffle and make supplementary spraying; Lay protective layers on the second surface of the modular insulating board and the outer surface of the baffle. The thickness of the protective layer is between 0.5mm - 1.5mm, the overlapping width of the outer protective layer and the baffle surface is not less than 25mm, and the overlapping length of the outer protective layer at the joint is not less than 200mm.

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