An insulation system for a tank bottom support area and a method of installing the same

Abstract

The application provides an insulation system of a liquid tank bottom support and a mounting method thereof. The insulation system comprises a modular insulation board, a first baffle, a second baffle and a third baffle. The modular insulation board is formed by splicing a plurality of prefabricated insulation boards, and a first surface of the modular insulation board laid on the outer surface of the liquid tank is provided with a protruding structure; the first baffle is arranged on a second surface close to a reinforcing structure and forms a first space with the bottom support area and the modular insulation board; the second baffle forms a second space with the first baffle and the bottom support area; the third baffle, the second baffle, the modular insulation board and the bottom support area form a third space; and the first space, the second space and the third space are all filled with polyurethane foam. The insulation system improves the sealing performance and the heat insulation capacity of the insulation system of the complex bottom support area by combining the modular prefabricated board and the polyurethane foam; and the insulation system has high integration and can provide good heat insulation function in a low-temperature environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship liquid cargo tank insulation, in particular to an insulation system for a liquid tank bottom support area and a mounting method thereof. BACKGROUND

[0002] In the field of liquefied gas carriers, independent B-type liquid tanks, as core equipment conforming to IMO IGC Code specifications, are required to safely store low-temperature cargoes such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG) under ultra-low temperature conditions. Due to the vaporization heat absorption characteristics of low-temperature liquids, there is continuous heat conduction between the liquid tank and the external environment. If effective insulation measures are not taken, the low-temperature liquid in the liquid tank will vaporize due to heat, causing the pressure to rise and threatening the safety of the ship in operation. Therefore, IMO IGC Code clearly requires that an insulation system be provided for the independent liquid tank, and the core requirements include: the insulation system needs to limit the heat flow from the external environment to the inside of the liquid tank within the range that can be adjusted by the pressure and temperature control system, to avoid the risk of overpressure caused by excessive vaporization of the liquid; the insulation system needs to have the function of a splash barrier to form a continuous leakage channel with the outer surface of the liquid tank, to prevent the low-temperature liquid from directly contacting the ship structure and to avoid the failure of the ship structure due to low-temperature embrittlement.

[0003] For the unique structure of the independent B-type liquid tank, especially the special areas such as the support of the bottom of the liquid tank, the existing insulation system scheme is difficult to meet the design requirements. The bottom support of the independent B-type liquid tank is a key component that connects the liquid tank and the ship body, and its insulation design faces special challenges. The existing insulation system scheme, such as spraying an insulation foam layer or directly installing a prefabricated insulation plate, cannot fully meet the needs of this area due to the special structure and function of the liquid tank bottom support, resulting in unsatisfactory insulation effect, difficulty in effectively preventing heat transfer and potential liquid leakage risk, and limiting the overall performance and safety of the liquid tank. SUMMARY

[0004] In view of the defects and deficiencies of the prior art, the present application provides an insulation system for a liquid tank bottom support area and a mounting method thereof to solve the problem of unsatisfactory insulation effect of the liquid tank bottom support area in the prior art.

[0005] To achieve the above-mentioned objects and other related objects, in a first aspect, the present application provides an insulation system for a liquid tank bottom support area, which is arranged at the bottom of the liquid tank, comprising a reinforcing structure arranged close to the outer surface of the liquid tank, a pressure block connected with the reinforcing structure and facing away from the outer surface of the liquid tank, and a pressure block fence arranged around the pressure block close to the reinforcing structure, and the insulation system comprises:

[0006] A modular insulation board formed by splicing a plurality of prefabricated insulation boards, arranged around the reinforcing structure, the modular insulation board comprising a first surface and a second surface arranged oppositely, the first surface being applied to the outer surface of the liquid tank near the bottom support area, and the first surface being provided with a protruding structure, and the second surface being arranged away from the outer surface of the liquid tank;

[0007] A first baffle plate arranged on the second surface near the reinforcing structure, a first space formed between the first baffle plate, the reinforcing structure, and the modular insulation board, and the first space being filled with polyurethane foam;

[0008] A second baffle plate, one end of which is connected to the edge of the first baffle plate, and the other end of which is connected to the intersection of the pressure block fence and the pressure block, a second space formed between the first baffle plate, the second baffle plate, and the pressure block fence, and the second space being filled with polyurethane foam;

[0009] A third baffle plate, one end of which is connected to the second surface at the periphery of the second baffle plate, and the other end of which is connected to the side surface of the pressure block, a third space formed between the third baffle plate, the second baffle plate, the second surface, and the side surface of the pressure block, and the third space being filled with polyurethane foam.

[0010] As an embodiment, the third baffle plate comprises a vertical connecting segment, an inclined connecting segment, and a horizontal connecting segment connected in sequence, one end of the vertical connecting segment being connected to the second surface, and one end of the horizontal connecting segment being connected to the side surface of the pressure block.

[0011] As an embodiment, operation holes are arranged on the first baffle plate, the second baffle plate, and the third baffle plate.

[0012] As an embodiment, the height difference between the connection of the third baffle plate and the pressure block and the surface of the pressure block facing away from the reinforcing structure is between 5mm and 100mm.

[0013] As an embodiment, the distance from the connection of the third baffle plate and the second surface to the connection of the second baffle plate and the first baffle plate is not less than 50mm.

[0014] As an embodiment, the modular insulation board comprises a plurality of first prefabricated insulation boards, a plurality of second prefabricated insulation boards, and a plurality of third prefabricated insulation boards, the first prefabricated insulation boards and the second prefabricated insulation boards being located at the reinforcing structure, and the third prefabricated insulation boards being filled between the first prefabricated insulation boards and the second prefabricated insulation boards, the first prefabricated insulation boards, the second prefabricated insulation boards, and the third prefabricated insulation boards being spliced to form a plate shape;

[0015] The first prefabricated insulation board, the second prefabricated insulation board and the third prefabricated insulation board each comprise an inner insulation layer, a reinforcing layer and an outer insulation layer which are sequentially stacked, the surface of the inner insulation layer close to the surface of the liquid tank is the first surface, and the surface of the outer insulation layer away from the reinforcing layer is the second surface.

[0016] As an implementation form, the surface of the inner insulation layer close to the reinforcing layer has a larger area than the surface of the reinforcing layer close to the inner insulation layer; the surface of the reinforcing layer close to the outer insulation layer is consistent with the surface of the outer insulation layer close to the reinforcing layer; the first surface has a larger area than the second surface; the surface of the outer insulation layer away from the reinforcing layer is provided with a stepped structure.

[0017] An elastic connecting layer is arranged at the gap between adjacent inner insulation layers.

[0018] A prefabricated connecting strip is arranged at the gap between adjacent outer insulation layers.

[0019] As an implementation form, the second surface of the first prefabricated insulation board and the second surface of the second prefabricated insulation board are provided with an insulation patch close to the edge of the reinforcing structure.

[0020] As an implementation form, a fixing assembly is arranged at the gap between adjacent inner insulation layers and between the inner insulation layer corresponding to the insulation patch and the reinforcing structure, and the fixing assembly is provided with the elastic connecting layer between the fixing assembly and the inner insulation layer.

[0021] The fixing assembly comprises a fixing piece, a connecting column, a fixing stud, a nut and a washer, one end of the connecting column is connected with the fixing piece through the nut and the washer, the other end of the connecting column is threadedly connected with one end of the fixing stud, and the other end of the fixing stud is connected with the fixing stud positioning portion of the outer surface of the liquid tank.

[0022] The fixing piece comprises a reinforcing plate, a bending portion, a cavity portion and a connecting portion, the cavity portion is provided with a hollow cavity, and an insulation plug is arranged in the cavity; the two bending portions are oppositely arranged on the two sides of the cavity portion, the reinforcing plate is arranged on the surface of the bending portion away from the cavity portion, and at least one bending portion abuts against the surface of the inner insulation layer close to the reinforcing layer; the connecting portion is arranged at the other end of the cavity portion, and the connecting portion is connected with the connecting column.

[0023] As an implementation form, the prefabricated connecting strip comprises a hard connecting strip and an elastic connecting strip.

[0024] The hard connecting strip is arranged at the gap between adjacent outer insulation layers.

[0025] The elastic connecting strip is arranged between the hard connecting strip and the outer thermal insulation layer, between the hard connecting strip and the reinforcing layer, and between the step structures of adjacent outer thermal insulation layers.

[0026] As an implementation form, the second surface of the modular thermal insulation plate and the outer surface of the third baffle are provided with a protective layer.

[0027] In a second aspect, the application further provides a mounting method of a thermal insulation system of a bottom support area of a liquid tank, comprising the following steps:

[0028] According to the design requirements, the production of the first prefabricated thermal insulation plate, the second prefabricated thermal insulation plate, the third prefabricated thermal insulation plate, the prefabricated connecting strip, the first baffle, the second baffle, the third baffle, the fixing assembly and the protective layer is completed;

[0029] According to the design requirements, the grid division of the outer surface of the liquid tank and the positioning of the fixing studs are completed;

[0030] After the paint of the positioning position of the fixing stud on the outer surface of the liquid tank is polished clean, the fixing stud is welded, the polishing diameter is 20mm-30mm, the coaxial tolerance of the actual position of the fixing stud and the positioning position thereof is 3mm, and the angle between the fixing stud and the outer surface of the liquid tank is 87°-93°;

[0031] In the limited interval of the fixing stud on the outer surface of the liquid tank, the first prefabricated thermal insulation plate and the second prefabricated thermal insulation plate are installed and connected with the reinforcing structure by the fixing assembly, the third prefabricated thermal insulation plate is installed between the first prefabricated thermal insulation plate and the second prefabricated thermal insulation plate, and the modular thermal insulation plate is formed;

[0032] The prefabricated connecting strip is installed at the gap between any two adjacent prefabricated thermal insulation plates in the modular thermal insulation plate;

[0033] In a plane parallel to the second surface of the modular thermal insulation plate around the bottom support area, the first baffle is fixed to the reinforcing structure, a first space is formed between the first baffle, the reinforcing structure and the modular thermal insulation plate, and polyurethane foam is sprayed into the first space through the operation hole of the first baffle;

[0034] The second baffle is fixed at the intersection between the second surface of the modular thermal insulation plate and the pressure block fence and the pressure block around the bottom support area, a second space is formed between the first baffle, the second baffle and the pressure block fence, and polyurethane foam is sprayed into the second space through the operation hole of the second baffle;

[0035] The third baffle is fixed on the side surface of the pressure block from the second surface of the modular thermal insulation plate, a third space is formed between the third baffle, the second baffle, the second surface and the side surface of the pressure block, and polyurethane foam is sprayed into the third space through the operation hole of the third baffle;

[0036] A protective layer is applied on the second surface of the modular insulation board, the prefabricated connecting strip, the third baffle and the exposed outer surface of the sprayed polyurethane foam, the thickness of the protective layer is between 0.5mm and 1.5mm, and the width of the overlapping part of the protective layer is not less than 25mm.

[0037] As described above, the liquid tank bottom support area insulation system and the installation method thereof have the following beneficial effects:

[0038] The liquid tank bottom support area insulation system has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 A front view structural schematic diagram of a liquid tank and a bottom support area is shown.

[0040] Figure 2 A three-dimensional structural schematic diagram of a liquid tank and a bottom support area is shown.

[0041] Figure 3 A three-dimensional structural schematic diagram of a liquid tank bottom support area insulation system of an embodiment of the present application is shown.

[0042] Figure 4 A top view structural schematic diagram of a liquid tank bottom support area insulation system of an embodiment of the present application is shown.

[0043] Figure 5 A three-dimensional structural schematic diagram of a liquid tank bottom support area insulation system of an embodiment of the present application is shown. Figure 4 A sectional view structural schematic diagram along direction A-A is shown.

[0044] Figure 6 A three-dimensional structural schematic diagram of a liquid tank bottom support area insulation system of an embodiment of the present application is shown.

[0045] Figure 7 A structural schematic diagram of a third baffle in a liquid tank bottom support area insulation system of an embodiment of the present application is shown.

[0046] Figure 8 A structural schematic diagram of a first prefabricated insulation board in a liquid tank bottom support area insulation system of an embodiment of the present application is shown.

[0047] Figure 9 A structural schematic diagram of a second prefabricated insulation board in a liquid tank bottom support area insulation system of an embodiment of the present application is shown.

[0048] Figure 10 Figure 9 shows a schematic view of the structure of a third prefabricated insulation panel in an insulation system for a support area of a tank bottom according to an embodiment of the present application.

[0049] Figure 11 Figure 10 shows a schematic view of the structure of a gap between modular insulation panels in an insulation system for a support area of a tank bottom according to an embodiment of the present application.

[0050] Figure 12 Figure 11 shows a schematic view of the structure of an insulation patch in an insulation system for a support area of a tank bottom according to an embodiment of the present application.

[0051] Figure 13 Figure 12 shows a schematic view of the structure of a protruding structure in an insulation system for a support area of a tank bottom according to an embodiment of the present application.

[0052] Figure 14 Figure 13 shows a schematic view of a tank to which an insulation system for a support area of a tank bottom according to an embodiment of the present application is applied.

[0053] Explanation of reference numerals

[0054] 100, tank; 200, support area of a tank bottom; 210, reinforcing structure; 220, pressure block; 230, fence of pressure block; 300, modular insulation panel; 301, first prefabricated insulation panel; 302, second prefabricated insulation panel; 303, third prefabricated insulation panel; 310, inner insulation layer; 320, reinforcing layer; 330, outer insulation layer; 331, stepped structure; 340, protruding structure; 350, elastic connecting layer; 360, prefabricated connecting strip; 361, rigid connecting strip; 362, elastic connecting strip; 370, insulation patch; 401, first baffle; 402, second baffle; 403, third baffle; 410, operation hole; 500, polyurethane foam; 600, fixing assembly; 601, fixing member; 602, connecting column; 603, fixing stud; 604, nut; 605, washer; 610, reinforcing plate; 620, bent portion; 630, insulation plug; 700, protective layer. DETAILED DESCRIPTION

[0055] The present application is herein described, by way of example only, with reference to certain embodiments thereof. It is construed that persons skilled in the art can readily devise other embodiments of the present application that are within its spirit and scope, without departing from the spirit of the present application, based on the contents disclosed in the present specification. The present application can also be implemented or applied in other different embodiments, and the details in the present specification can be modified or changed in various ways based on different viewpoints and applications, without departing from the spirit of the present application.

[0056] Reference is made to Figures 1 to 14It is to be noted that the diagrams provided in the embodiments only schematically illustrate the basic concept of the present application, and thus only the components related to the present application are shown in the diagrams, rather than the number, shape and size of the components in actual embodiments, and the shape, number and ratio of the components in actual embodiments can be arbitrarily changed, and the layout of the components can be more complex.

[0057] As shown in Figure 1 and Figure 2 , the bottom support area 200 of the liquid tank 100 is arranged at the bottom of the liquid tank 100, which refers to the bottom support structure itself and the planar area of the liquid tank 100 connected thereto. The bottom support area 200 includes a reinforcing structure 210 arranged close to the outer surface of the liquid tank 100, a pressure block 220 connected to the reinforcing structure 210 and away from the outer surface of the liquid tank 100, and a pressure block fence 230 arranged around the pressure block 220 close to the reinforcing structure 210.

[0058] The present embodiment provides an insulation system for the bottom support area of a liquid tank, as shown in Figures 3 to 5 , the insulation system includes a modular insulation board 300, a first baffle 401, a second baffle 402 and a third baffle 403.

[0059] As shown in Figure 3 and Figure 4 , the modular insulation board 300 is formed by splicing a plurality of prefabricated insulation boards, and is arranged around the reinforcing structure 210. The modular insulation board 300 includes a first surface and a second surface arranged oppositely, and the first surface of the modular insulation board 300 is applied to the outer surface of the liquid tank 100 close to the bottom support area 200. A plurality of protruding structures 340 are arranged on the first surface, which 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 leaked low-temperature liquid cargo along this channel is collected in the preset area after the main screen wall fails. The protruding structures 340 can have different shapes, for example, as shown in Figure 11 , the cross section of the protruding structure 340 can be square, rectangular, circular and triangular, which is protruded from the first surface of the modular insulation board 300 close to the outer surface of the liquid tank 100. The second surface of the modular insulation board 300 is arranged away from the outer surface of the liquid tank 100.

[0060] As shown in Figure 5 , the first baffle 401 is arranged on the second surface of the modular insulation board 300 close to the reinforcing structure 210, and the first baffle 401, the reinforcing structure 210 and the modular insulation board 300 form a first space, and the first space is filled with polyurethane foam 500.

[0061] The second baffle 402 is arranged at an angle with the second surface of the modular insulation plate 300, one end of the second baffle 402 is connected with the outer edge of the first baffle 401, and the other end is connected with the intersection of the pressure block fence 230 and the pressure block 220, the first baffle 401, the second baffle 402, and the pressure block fence 230 form a second space, and the second space is filled with polyurethane foam 500.

[0062] One end of the third baffle 403 is connected with the second surface of the modular insulation plate 300 at the periphery of the second baffle 402, and the other end is connected with the side surface of the pressure block 220, the third baffle 403, the second baffle 402, the second surface of the modular insulation plate 300, and the side surface of the pressure block 220 form a third space, and the third space is filled with polyurethane foam 500.

[0063] Since the polyurethane foam 500 is difficult to shape or has an irregular shape after shaping, additional processing is required, including cutting, polishing, surface protection, etc. The present embodiment shapes the polyurethane foam 500 directly in the baffle by arranging the first baffle 401, the second baffle 402, and the third baffle 403, which can save the process time of cutting and surface protection, and improve the design and installation efficiency.

[0064] The liquid tank bottom support area insulation system provided by the present embodiment provides a stable insulation framework with the modular insulation plate 300, and fills the gap between complex structures with polyurethane foam 500, which simplifies the structure of the insulation system, improves the design and installation efficiency, reduces the cost of the insulation system, and improves the sealing performance and insulation capacity of the bottom support area insulation system. The insulation system has high integration and can provide good insulation function in a low temperature environment.

[0065] As an implementation mode, as shown in Figure 5 The third baffle 403 includes a vertical connection section, an inclined connection section, and a horizontal connection section connected in sequence, one end of the vertical connection section is connected with the second surface of the modular insulation plate 300, one end of the vertical connection section is connected with one end of the inclined connection section, the other end of the inclined connection section is connected with one end of the horizontal connection section, and the other end of the horizontal connection section is connected with the side surface of the pressure block 220. In this way, the insulation effect of the insulation system can be ensured, and the use amount of polyurethane foam can be saved, and the cost of the insulation system can be reduced.

[0066] As an implementation mode, as shown in Figure 3 、 Figure 4 、 Figure 6 and Figure 7As shown, the first baffle 401, the second baffle 402, and the third baffle 403 are each provided with an operation hole 410. The operation hole 410 is provided to facilitate spraying polyurethane foam 500 into the first space, the second space, and the third space, and polishing the outer surface of the polyurethane foam 500 after it is cured to be flat, so that the polyurethane foam 500 at the corresponding position is flush with the outer surface of the first baffle 401, the second baffle 402, and the third baffle 403, respectively. The shape of the operation hole 410 can be, for example, circular, square, oval, rectangular, etc.

[0067] As an embodiment, as shown in Figure 5 , the height difference L between the connection of the third baffle 403 and the pressure block 220 and the surface of the pressure block 220 away from the reinforcing structure 210 is between 5mm and 100mm. Alternatively, the height difference L can be, for example, any one of 5mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, or a value selected from between any two of the above values.

[0068] As an embodiment, as shown in Figure 5 , the distance T from the connection of the third baffle 403 and the second surface of the modular insulation board 300 to the connection of the second baffle 402 and the first baffle 401 is not less than 50mm. In this way, the connection firmness of the third baffle 403 and the second surface of the modular insulation board 300 is improved.

[0069] As an embodiment, as shown in Figure 3 , Figure 4 , Figure 6 , Figures 8 to 10 As shown in Figure 3 , Figure 4 and Figure 6 , the modular insulation board 300 includes two first prefabricated insulation boards 301, two second prefabricated insulation boards 302, and four third prefabricated insulation boards 303. The two first prefabricated insulation boards 301 are arranged opposite to each other on two sides of the reinforcing structure 210, the two second prefabricated insulation boards 302 are arranged opposite to each other on the other two sides of the reinforcing structure 210, and the four third prefabricated insulation boards 303 are arranged between the first prefabricated insulation boards 301 and the second prefabricated insulation boards 302, respectively, forming a plate-shaped structure of the modular insulation board 300.

[0070] As shown in Figure 5 , Figures 8 to 10 , the first prefabricated insulation plate 301, the second prefabricated insulation plate 302, and the third prefabricated insulation plate 303 each include an inner insulation layer 310, a reinforcing layer 320, and an outer insulation layer 330 stacked in sequence. The surface of the inner insulation layer 310 close to the surface of the liquid tank 100 is a first surface, and the surface of the outer insulation layer 330 away from the reinforcing layer 320 is a second surface.

[0071] As an implementation form, as shown in Figures 8 to 10 , the surface of the inner insulation layer 310 close to the reinforcing layer 320 has a larger area than the surface of the reinforcing layer 320 close to the inner insulation layer 310. The surface of the reinforcing layer 320 close to the outer insulation layer 330 is consistent with the surface of the outer insulation layer 330 close to the reinforcing layer 320. The first surface has a larger area than the second surface. In this way, the side surfaces of the first prefabricated insulation plate 301, the second prefabricated insulation plate 302, and the third prefabricated insulation plate 303 can form a stepped structure, facilitating the subsequent connection between the fixing assembly 600 and the inside of the modular insulation plate 300.

[0072] As shown in Figure 5 , the surface of the outer insulation layer 330 away from the reinforcing layer 320 is provided with a stepped structure 331.

[0073] As shown in Figure 11 , the gap between adjacent inner insulation layers 310 is provided with an elastic connecting layer 350.

[0074] As shown in Figure 3 , Figure 4 and Figure 6 , the gap between adjacent outer insulation layers 330 is provided with a prefabricated connecting strip 360. The prefabricated connecting strip 360 is provided with a structure matched with the stepped structure 331 to improve the sealing and connecting strength of the prefabricated connecting strip 360 between the adjacent outer insulation layers 330.

[0075] As an implementation form, as shown in Figure 6 , Figure 8 and Figure 9 , the second surface of the outer insulation layer 330 of the first prefabricated insulation plate 301 and the second surface of the outer insulation layer 330 of the second prefabricated insulation plate 302 close to the edge of the reinforcing structure 210 are each provided with an insulation patch 370.

[0076] The insulation patch 370 can have different shapes, for example, as shown in Figure 12 , and the like, which can be designed according to actual process requirements.

[0077] As an implementation, the gap between the adjacent inner thermal insulation layers 310 and the position corresponding to the thermal insulation patch 370 is provided with a fixing assembly 600, and the elastic connecting layer 350 is arranged between the fixing assembly 600 and the inner thermal insulation layer 310.

[0078] As shown in Figure 11 , the fixing assembly 600 includes a fixing piece 601, a connecting column 602, a fixing stud 603, a nut 604 and a washer 605. Both ends of the connecting column 602 are provided with internal threads, the fixing piece 601 is connected with one end of the connecting column 602 through the nut 604 and the washer 605, the other end of the connecting column 602 is threadedly connected with one end of the fixing stud 603, and the other end of the fixing stud 603 is connected with the fixing stud positioning portion of the outer surface of the liquid tank 100. The fixing assembly 600 realizes the fixation of the modular thermal insulation plate 300 with complex structure, reduces the processing and installation difficulty of the thermal insulation system, and improves the quality and reliability of the thermal insulation system.

[0079] The fixing piece 601 includes a reinforcing plate 610, a bending portion 620, a cavity portion and a connecting portion. The cavity portion is provided with a hollow cavity, the cavity is provided with a thermal insulation plug 630, the two bending portions 620 are oppositely arranged on both sides of one end of the cavity portion, the reinforcing plate 610 is arranged on the surface of the bending portion 620 away from the cavity portion, and at least one bending portion 620 abuts against the surface of the inner thermal insulation layer 310 close to the reinforcing layer 320 (that is, the bending portion 620 can be arranged on the stepped structure of the side surface of the adjacent prefabricated thermal insulation plate); the connecting portion is arranged at the other end of the cavity portion, and the connecting portion is fastened and connected with the connecting column 602 through the nut 604 and the washer 605. As a specific implementation, the combined structure of the cavity portion and the connecting portion of the fixing piece 601 is in a U shape, the two bending portions 620 are arranged on both sides of the opening of the U shape and are perpendicular to the opening. The reinforcing plate 610 extends and covers from one bending portion 620 to the other bending portion 620 through the cavity portion. The reinforcing plate 610 can prevent the fixing piece 601 from being inwardly deformed, and plays a reinforcing role on the fixing piece 601 to limit the deformation of the fixing piece 601.

[0080] As an implementation, as shown in Figure 11 , the prefabricated connecting strip 360 includes a hard connecting strip 361 and an elastic connecting strip 362. The gap between the adjacent outer thermal insulation layers 330 is provided with the hard connecting strip 361; the elastic connecting strip 362 is arranged between the hard connecting strip 361 and the outer thermal insulation layer 330, between the hard connecting strip 361 and the reinforcing layer 210, and between the stepped structures 331 of the adjacent outer thermal insulation layers 330. The prefabricated connecting strip 360 realizes the close combination of any two adjacent prefabricated thermal insulation plates in different regions.

[0081] As an implementation, as shown in Figure 3 ,Figure 6 and Figure 11 As shown in FIG. 7, the second surface of the modular insulation panel 300 and the outer surface of the third baffle 403 are both provided with a protective layer 700. The protective layer 700 can enhance the tolerance of the insulation system of the liquid tank 100 to the external environment, water resistance, and liveliness imitation.

[0082] As an embodiment, as shown in FIG. 1, the liquid tank 100 can be a prismatic 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, manganese steel, and aluminum alloy. The material of the bottom support is consistent with that of the liquid tank 100. The pressure block 220 is composed of one or more laminated wood and composite materials. Figure 14 As an embodiment, the inner insulation layer 310, the outer insulation layer 330, the insulation patch 370, the insulation plug 630, the protruding structure 340, and the hard connecting strip 361 can all be composed of one or more insulation materials and reinforcing materials, the insulation materials including but not limited to polyurethane foam, polystyrene foam, polyethylene foam, phenolic foam, polyimide foam, and aerogel, and the reinforcing materials including but not limited to glass fiber and hollow glass microspheres. The insulation materials appearing below can all be composed of the above-listed materials, and will not be described in detail.

[0083] As an embodiment, the materials of the first baffle 401, the second baffle 420, and the third baffle 403 are selected from one or more of butyl tape, wood board, and insulation materials.

[0084] As an embodiment, the inner insulation layer 310, the reinforcing layer 320, and the outer insulation layer 330 are bonded by low-temperature adhesive. The reinforcing layer 320 is composed of one or more grid materials selected from one or more of glass fiber aluminum foil grid cloth, carbon fiber grid cloth, and metal mesh.

[0085] As an embodiment, the elastic connecting layer 350 and the elastic connecting strip 362 are composed of one or more elastic insulation materials selected from one or more of glass wool, polyurethane foam, melamine foam, ethylene-vinyl acetate copolymer foam, polyethylene foam, polypropylene foam, and polyimide foam.

[0086] As an embodiment, the protective layer 700 is composed of a thermoplastic polyolefin elastomer selected from polyolefin resin materials such as polypropylene or polyethylene, and a flexible fireproof layer selected from one or more of ceramic fiber cloth, glass fiber aluminum foil cloth, and aluminum silicate fiber felt.

[0087] The embodiment also provides a mounting method of the insulation system of the bottom support area of the liquid tank, including the following steps:

[0088] The embodiment also provides a mounting method of the insulation system of the bottom support area of the liquid tank, including the following steps:

[0089] S100, producing the first prefabricated insulation board 301, the second prefabricated insulation board 302, the third prefabricated insulation board 303, the prefabricated connecting strip 360, the first baffle 401, the second baffle 402, the third baffle 403, the fixing assembly 600 and the protective layer 700 according to the design requirements;

[0090] S200, completing the grid division of the outer surface of the liquid tank 100 and the positioning of the fixing studs 603 according to the design requirements;

[0091] S300, welding the fixing studs 603 after polishing the paint of the positioning positions of the fixing studs on the outer surface of the liquid tank 100, the polishing diameter is 30 mm, the coaxial tolerance between the actual position of the fixing studs 603 and the positioning position thereof is 3 mm, and the angle between the fixing studs 603 and the outer surface of the liquid tank 100 is 90°;

[0092] S400, installing the first prefabricated insulation board 301 and the second prefabricated insulation board 302 in the interface with the reinforcing structure 210 and installing the third prefabricated insulation board 303 between the first prefabricated insulation board 301 and the second prefabricated insulation board 302 to form the modular insulation board 300 by the fixing assembly 600 within the defined interval of the fixing studs 603 on the outer surface of the liquid tank 100;

[0093] S500, installing the prefabricated connecting strip 360 at the gap between any two adjacent prefabricated insulation boards in the modular insulation board 300;

[0094] S600, fixing the first baffle 401 to the reinforcing structure 210 in a plane parallel to the second surface of the modular insulation board 300 around the bottom support area 200, forming a first space between the first baffle 401, the reinforcing structure 210 and the modular insulation board 300, and spraying polyurethane foam 500 into the first space through the operation hole 410 of the first baffle 401;

[0095] S700, fixing the second baffle 402 at the intersection between the second surface of the modular insulation board 300 and the pressure block fence 230 and the pressure block 220 of the bottom support area 200, forming a second space between the first baffle 401, the second baffle 402 and the pressure block fence 230, and spraying polyurethane foam 500 into the second space through the operation hole 410 of the second baffle 402;

[0096] S800, fixing the third baffle 403 on the side surface of the pressure block 220 from the second surface of the modular insulation board 300, forming a third space between the third baffle 403, the second baffle 402, the second surface and the side surface of the pressure block 220, and spraying polyurethane foam 500 into the third space through the operation hole 410 of the third baffle 403;

[0097] S900, a protective layer 700 is applied on the second surface of the modular insulation board 300, the exposed outer surface of the prefabricated connecting strip 360, the third baffle 403 and the sprayed polyurethane foam 500, the thickness of the protective layer 700 is 1.5 mm, and the width of the overlapping part of the protective layer 700 is 30 mm.

[0098] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the present application should be covered by the claims of the present application.

Claims

1. An insulation system for a bottom support area of a liquid tank, the bottom support area being provided at a bottom of the liquid tank, comprising a reinforcement structure provided near an outer surface of the liquid tank, a pressure block facing away from the outer surface of the liquid tank and connected to the reinforcement structure, and a pressure block fence provided around the pressure block near the reinforcement structure, characterized in that, The heat insulation system comprises: a modular heat insulation plate formed by splicing a plurality of prefabricated heat insulation plates, arranged around the reinforcing structure, the modular heat insulation plate comprising a first surface and a second surface arranged oppositely, the first surface being applied to the outer surface of the liquid tank near the bottom support area, and the first surface being provided with a protruding structure, and the second surface being arranged away from the outer surface of the liquid tank; a first baffle plate arranged on the second surface near the reinforcing structure, a first space being formed between the first baffle plate, the reinforcing structure, and the modular heat insulation plate, and the first space being filled with polyurethane foam; a second baffle plate, one end of which is connected to the edge of the first baffle plate, and the other end of which is connected to the intersection of the pressure block fence and the pressure block, a second space being formed between the first baffle plate, the second baffle plate, and the pressure block fence, and the second space being filled with polyurethane foam; a third baffle plate, one end of which is connected to the second surface at the periphery of the second baffle plate, and the other end of which is connected to the side surface of the pressure block, a third space being formed between the third baffle plate, the second baffle plate, the second surface, and the side surface of the pressure block, and the third space being filled with polyurethane foam.

2. The insulation system for a tank bottom support area according to claim 1, wherein, The third baffle plate comprises a vertical connecting section, an inclined connecting section, and a horizontal connecting section connected in sequence, one end of the vertical connecting section being connected to the second surface, and one end of the horizontal connecting section being connected to the side surface of the pressure block.

3. A thermal insulation system for a tank bottom support area according to claim 1 or 2, characterized in that Operation holes are arranged on the first baffle plate, the second baffle plate, and the third baffle plate.

4. The insulation system for a tank bottom support area according to claim 1 or 2, characterized in that The height difference between the connection of the third baffle plate and the pressure block and the surface of the pressure block facing away from the reinforcing structure is between 5mm and 100mm. The distance from the connection of the third baffle plate and the second surface to the connection of the second baffle plate and the first baffle plate is not less than 50mm.

5. The insulation system for a tank bottom support area of claim 1, wherein, The modular heat insulation plate comprises a plurality of first prefabricated heat insulation plates, a plurality of second prefabricated heat insulation plates, and a plurality of third prefabricated heat insulation plates, the first prefabricated heat insulation plates and the second prefabricated heat insulation plates being located at the reinforcing structure, and the third prefabricated heat insulation plates being filled between the first prefabricated heat insulation plates and the second prefabricated heat insulation plates, the first prefabricated heat insulation plates, the second prefabricated heat insulation plates, and the third prefabricated heat insulation plates being spliced to form a plate shape; 6. The insulation system for a tank bottom support area of claim 1, wherein, The first prefabricated heat insulation plates, the second prefabricated heat insulation plates, and the third prefabricated heat insulation plates each comprise an inner heat insulation layer, a reinforcing layer, and an outer heat insulation layer stacked in sequence, the surface of the inner heat insulation layer close to the liquid tank being the first surface, and the surface of the outer heat insulation layer facing away from the reinforcing layer being the second surface. The surface of the inner heat insulation layer close to the reinforcing layer is larger than the surface of the reinforcing layer close to the inner heat insulation layer; the surface of the reinforcing layer close to the outer heat insulation layer is consistent with the surface of the outer heat insulation layer close to the reinforcing layer; the area of the first surface is larger than the area of the second surface; and the surface of the outer heat insulation layer facing away from the reinforcing layer is provided with a stepped structure; 7. The insulation system for a tank bottom support area of claim 6, wherein, An elastic connecting layer is arranged at the gap between adjacent inner heat insulation layers; ​ A prefabricated connecting strip is arranged at the gap between adjacent outer thermal insulation layers.

8. The insulation system for a tank bottom support area of claim 7, wherein, An insulating patch is arranged on the second surface of the first prefabricated thermal insulation plate and the second surface of the second prefabricated thermal insulation plate near the edge of the reinforcing structure.

9. The insulation system for a tank bottom support area of claim 8, wherein, A fixing assembly is arranged at the gap between adjacent inner thermal insulation layers and between the inner thermal insulation layer and the reinforcing structure corresponding to the insulating patch, and an elastic connecting layer is arranged between the fixing assembly and the inner thermal insulation layer. The fixing assembly comprises a fixing piece, a connecting column, a fixing stud, a nut and a washer, one end of the connecting column is connected with the fixing piece through the nut and the washer, the other end of the connecting column is threadedly connected with one end of the fixing stud, and the other end of the fixing stud is connected with the fixing stud positioning position on the outer surface of the liquid tank. The fixing piece comprises a reinforcing plate, a bending part, a cavity part and a connecting part, the cavity part is provided with a hollow cavity, and an insulating plug is arranged in the cavity; two bending parts are oppositely arranged on both sides of the cavity part, the reinforcing plate is arranged on the surface of the bending part away from the cavity part, and at least one bending part abuts against the surface of the inner thermal insulation layer near the reinforcing layer; the connecting part is arranged at the other end of the cavity part, and the connecting part is connected with the connecting column.

10. The insulation system for a tank bottom support area of claim 7, wherein, The prefabricated connecting strip comprises a hard connecting strip and an elastic connecting strip. The hard connecting strip is arranged at the gap between adjacent outer thermal insulation layers. The elastic connecting strip is arranged between the hard connecting strip and the outer thermal insulation layer, between the hard connecting strip and the reinforcing layer, and between the step structures of adjacent outer thermal insulation layers.

11. The insulation system for a tank bottom support area of claim 1, wherein, The second surface of the modular thermal insulation plate and the outer surface of the third baffle are both provided with a protective layer.

12. A method of installing an insulation system for a tank bottom support area, characterized in that The method comprises the following steps: According to the design requirements, the production of the first prefabricated thermal insulation plate, the second prefabricated thermal insulation plate, the third prefabricated thermal insulation plate, the prefabricated connecting strip, the first baffle, the second baffle, the third baffle, the fixing assembly and the protective layer is completed; According to the design requirements, the grid division and the positioning of the fixing stud on the outer surface of the liquid tank are completed; After the paint on the fixing stud positioning position on the outer surface of the liquid tank is polished clean, the fixing stud is welded, the polishing diameter is 20mm-30mm, the coaxial tolerance between the actual position of the fixing stud and the positioning position thereof is 3mm, and the angle between the fixing stud and the outer surface of the liquid tank is 87°-93°; Within the limited range of the fixing stud on the outer surface of the liquid tank, the first prefabricated thermal insulation plate and the second prefabricated thermal insulation plate are installed with the reinforcing structure through the fixing assembly, and the third prefabricated thermal insulation plate is installed between the first prefabricated thermal insulation plate and the second prefabricated thermal insulation plate to form a modular thermal insulation plate; The prefabricated connecting strip is installed at the gap between any two adjacent prefabricated thermal insulation plates in the modular thermal insulation plate; In a plane parallel to the second surface of the modular thermal insulation plate around the bottom support area, the first baffle is fixed to the reinforcing structure, a first space is formed between the first baffle, the reinforcing structure and the modular thermal insulation plate, and polyurethane foam is sprayed into the first space through the operation hole of the first baffle; The second baffle is fixed at the intersection of the pressure block fence and the pressure block on the second surface of the modular insulation board to the bottom support area, the first baffle, the second baffle and the pressure block fence form a second space, and the polyurethane foam is sprayed into the second space through the operation hole of the second baffle; The third baffle is fixed on the second surface of the modular insulation board to the side of the pressure block, the third baffle, the second baffle, the second surface and the side of the pressure block form a third space, and the polyurethane foam is sprayed into the third space through the operation hole of the third baffle; A protective layer is applied on the second surface of the modular insulation board, the prefabricated connecting strip, the third baffle and the exposed outer surface of the sprayed polyurethane foam, the thickness of the protective layer is between 0.5mm and 1.5mm, and the width of the overlapping part of the protective layer is not less than 25mm.

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