Gas film heat preservation and heat insulation system of in-film magnetic attraction light non-combustible heat insulation plate

Abstract

The utility model relates to a gas film heat preservation and heat insulation system of an in-film magnetic attraction light non-combustible heat insulation plate, the heat insulation plate is magnetically attracted on the inner side of a film surface by adopting a magnetic attraction method, the gas film heat preservation and heat insulation system comprises a suction cup and the light non-combustible heat insulation plate, the suction cup comprises a film patch, a film gasket and a magnetic attraction piece, and the light non-combustible heat insulation plate comprises a heat insulation plate body, a magnetic attraction head and an anchor rod. The utility model has the beneficial effects that the heat insulation plate is directly and magnetically attracted on the inner side of the film surface to form a full-space collaged heat insulation layer. The light non-combustible heat insulation plate is directly used as an interior decoration (surface layer) material, so that the light non-combustible heat insulation plate is suitable for crowded places and meets the compulsory requirements of relevant specifications; the thermal insulation plates of the full-space collage interact with one another, so that the strain of the gas film caused by external force is limited, and the integrity and the safety of the gas film are improved; the full-space spliced heat insulation plate eliminates a cold / heat bridge, improves the heat insulation and energy-saving performance of the gas film, facilitates ventilation of the inner side of the gas film, and avoids dew formation, freezing and mould breeding.

Description

Technical Field

[0001] The utility model relates to the technical field of air film, in particular to an air film thermal insulation system with a magnetically attracted lightweight non-combustible heat insulation board inside the film. Background Art

[0002] At present, for the air film thermal insulation system in the market, a cavity formed by processing an inner and outer double-layer film surface is mainly filled with a sandwich heat insulation material to form a double-layer film surface unit. After the air film is inflated, a Class A or Class B1 lightweight heat insulation material is filled in the cavity formed by processing the double-layer film surface. Its defects are as follows:

[0003] 1) In order to attach a lightweight heat insulation material to the inner side of the film surface, an inner film needs to be added, and this inner film also becomes the internal decoration (surface layer) material. According to the requirements of the Code for Fire Protection Design of Interior Decoration of Buildings GB 50222-2017 and Article 669 of the General Code for Building Fire Protection GB 55037-2022, the combustion performance grades of all film materials in the market are only Class B1 or Class B2 at present. The Code for Fire Protection Design of Interior Decoration of Buildings GB 50222-2017 and the General Code for Building Fire Protection GB 55037-2022 only allow materials with a combustion performance grade of Class A to be used as the internal decoration surface layer materials for places with dense personnel. Therefore, the application of air film is severely restricted.

[0004] 2) There is a thermal welding band of the double-layer film surface at the edge of this sandwich heat-insulating air film unit. Here, the inner and outer films are thermally welded together, and the heat insulation material cannot be filled inside the thermal welding band, resulting in the thermal welding band becoming a continuous cold / hot bridge. 3) In winter in cold and severe cold regions, since the surface temperature on the inner side of the outer film is often lower than the dew point temperature of the air inside the film, and due to the limited ventilation in the cavity, the condensation is difficult to evaporate, and condensation / icing is extremely likely to occur on the inner surface of the outer film. Therefore, the heat insulation material filled in the cavity is wetted / frozen, resulting in the failure of heat insulation and energy conservation, and the wetted heat insulation material is prone to breeding mold.

[0005] 4) Due to the structure of filling sandwich heat insulation material in the double-layer film surface cavity, the longitudinal stiffness of the air film is weaker than that in other directions, stress concentration occurs, resulting in local depression or tearing at the film surface connection.

[0006] 5) The heat insulation material in the cavity is fixed by tethering. The tether hanging on the film surface has concentrated tensile stress, resulting in poor integrity of the film surface. Under the action of wind load, the film surface is depressed or twisted.

[0007] The tether is under long-term stress, the tether extends or falls off, and the heat insulation material in the cavity slides off, resulting in the failure of heat insulation and energy conservation. Content of the Utility Model

[0008] The technical problem to be solved by the present utility model is to provide an air film thermal insulation system for a magnetically attracted lightweight non-combustible heat insulation board inside a film, which is applied to the attached heat insulation layer on the inner side of the film surface of a large-span beamless and columnless air film assembled, and solves the technical defects and specification limitations mentioned in the background.

[0009] The technical solution of the present utility model to solve the above problems is as follows: An air film thermal insulation system for a magnetically attracted lightweight non-combustible heat insulation board inside a film. The suction cup includes: a film patch, a film gasket, and a magnetic sheet. The film gasket is arranged around the film patch. The magnetic sheet is nested in a pouch with a circular hole opened between the film patch, the film gasket, and the air film surface. The lightweight non-combustible heat insulation board includes: the heat insulation board itself, a magnetic head, and an anchor rod. The heat insulation board itself is magnetically attracted under the suction cup through the magnetic head and is fully pasted on the inner side of the air film surface. The magnetic head is a double-lobe strip-shaped magnetic finished component, on which the anchor rod made of aluminum alloy with barbs is tied, and the anchor rod is then obliquely inserted into the heat insulation board itself.

[0010] The beneficial effects of the present utility model are as follows: The lightweight non-combustible heat insulation board is magnetically attracted under the preset suction cup and its magnetic sheet on the inner side of the air film surface through the magnetic head thereon, and is fully pasted to form a heat insulation layer. It overcomes the technical defects and specification limitations of the current air film heat insulation structure in the market; the lightweight non-combustible heat insulation board is directly used as the internal decoration (surface layer) material, and its material combustion performance grade is A, which meets the mandatory requirements of Article 669 of the Code for Fire Protection Design of Interior Decoration of Buildings GB 50222-2017 and the General Code for Building Fire Protection GB 55037-2022, so as to be applicable to crowded places and reduce the fire risk; under the action of wind and snow loads, the air film surface drives the lightweight non-combustible heat insulation boards fully pasted together to squeeze each other, thereby dispersing and restricting the strain of the air film surface, improving the ability of the air film to resist strain, as well as the safety and integrity of the air film, and also eliminating the risk of local instability and collapse of the film surface caused by local stress concentration; since the lightweight non-combustible heat insulation board is directly used as the internal decoration (surface layer) material, it is beneficial to the ventilation and drying of the lightweight non-combustible heat insulation board, avoiding condensation / icing, avoiding the growth of mold, and overcoming the problem of condensation / icing on the inner side of the air film in the current market; only using a single-layer film surface and lightweight non-combustible heat insulation boards completely eliminates the cold / hot bridges on the film surface, achieving heat insulation and energy conservation, resisting strain, meeting the mandatory requirements of Article 669 of the Code for Fire Protection Design of Interior Decoration of Buildings GB 50222-2017 and the General Code for Building Fire Protection GB 55037-2022, and at the same time reducing the amount of film material used; the lightweight non-combustible heat insulation board and its accessories are more conducive to procurement and processing, and also conducive to logistics transportation, and are not restricted by the transportation radius. At the same time, it meets the requirements of rapid on-site installation, is not affected by the technical level and proficiency of construction personnel, thereby reducing the labor intensity of construction personnel and the management difficulty of management personnel, being beneficial to construction installation and safety management, and eliminating potential safety hazards.

[0011] On the basis of the above technical solutions, the present utility model can be further improved as follows.

[0012] Further, the planar shape of the heat insulation board itself is fitted according to the cutting and pasting unit, the curved surface shape and the curvature of the gas film surface, and the thickness of the heat insulation board itself is determined according to thermal engineering calculations and relevant standards and specifications.

[0013] The beneficial effect of adopting the above further solution is that the use of a lightweight non-combustible heat insulation board facilitates on-site construction and installation, thus significantly improving the construction efficiency. The sides of adjacent lightweight non-combustible heat insulation boards are pasted to each other to ensure the continuity of the heat insulation layer and eliminate cold / hot bridges.

[0014] Further, the magnetic heads are inserted at the end corners of the heat insulation board itself in its plane, and the suction cups are preset at the positions corresponding to the magnetic heads on the inner side of the gas film surface.

[0015] The beneficial effect of adopting the above further solution is that flexible magnetic attraction between the magnetic heads and the suction cups is achieved to adapt to installation errors.

[0016] Further, the film patch, the film gasket and the inner side of the gas film surface are thermally welded and connected in sequence. The thickness of the film gasket is not less than the thickness of the magnetic attraction sheet, and the gas film surface, the film patch and the film gasket are all thermally welded and processed in the factory.

[0017] The beneficial effect of adopting the above further solution is that the thermal welding connection between the film patch, the film gasket and the gas film surface can ensure the stability and durability of the whole structure.

[0018] Further, the magnetic attraction sheet is centrally arranged at the geometric center of the film patch.

[0019] The beneficial effect of adopting the above further solution is that the central arrangement of the magnetic attraction sheet can ensure more uniform force on the film patch, avoiding the problem of unbalanced magnetic attraction force caused by position deviation. This helps to improve the stability and reliability of magnetic attraction.

[0020] Further, a round hole is opened at the geometric center of the film patch.

[0021] The beneficial effect of adopting the above further solution is to reduce the self-weight.

[0022] Further, the magnetic attraction sheet is a pure iron sheet, a thin steel sheet, a silicon steel sheet, a nickel-iron alloy sheet, an iron-cobalt alloy sheet or a manganese-zinc ferrite sheet.

[0023] The beneficial effects of adopting the above further solution are as follows: Pure iron sheets, thin steel sheets, silicon steel sheets, nickel-iron alloy sheets, iron-cobalt alloy sheets or manganese-zinc ferrite sheets all have good magnetic conductivity, providing persistent, reliable and stable magnetic attraction for the magnetic suction head. The market supply of magnetic suction sheets and their substitutes is sufficient, which helps to reduce costs.

[0024] Further, a round hole is opened at the geometric center of the magnetic suction sheet to reduce its own weight.

[0025] The beneficial effects of adopting the above further solution are as follows: It meets the requirements of lightweight production and reduces the own weight of the suction cup and its magnetic suction sheet. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0027] Figure 2 is Figure 1 a cross-sectional view of;

[0028] Figure 3 is a schematic structural diagram of the suction cup in an embodiment of the present utility model;

[0029] Figure 4 is Figure 3 a cross-sectional view of;

[0030] Figure 5 is a plan layout diagram of the suction cup in an embodiment of the present utility model.

[0031] In the drawings, the list of components represented by each reference numeral is as follows:

[0032] 1. Suction cup; 1a. Membrane patch; 1b. Membrane gasket; 1c. Magnetic suction sheet; 2. Lightweight non-combustible heat-insulating board; 2a. Magnetic suction head; 2b. Anchor rod; 3. Air film membrane surface. Detailed Embodiments

[0033] The principles and features of the present utility model will be described below with reference to the drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0034] As Figure 1 shown, the present utility model provides a gas film heat preservation and insulation system of a magnetically attracted lightweight non-combustible heat-insulating board in a film, which is applied to the inner side of the gas film of large-span beamless and columnless prefabricated buildings, directly serves as an inner heat-insulating layer in the film, and directly serves as an internal decoration (surface layer) material. Specifically, it includes: a suction cup 1 and a lightweight non-combustible heat-insulating board 2. The lightweight non-combustible heat-insulating board 2 is fully pasted on the inner side of the gas film to eliminate cold / heat bridges.

[0035] In this embodiment, the lightweight non-combustible heat-insulating board 2 is a lightweight non-combustible heat-insulating board with a combustion performance grade of A, including but not limited to: non-combustible glass wool, non-combustible mineral wool, and other non-combustible cotton heat-insulating materials, etc.

[0036] The suction cup 1 includes: a film patch 1a, a film gasket 1b, and a magnetic sheet 1c. The film gasket 1b is arranged around the film patch 1a. The magnetic sheet 1c is nested in a bag with a circular hole opened between the film patch 1a, the film gasket 1b, and the air film surface 3; the lightweight non-combustible heat-insulating board 2 includes: the heat-insulating board itself, a magnetic head 2a, and an anchor rod 2b. The heat-insulating board itself is magnetically attracted under the suction cup 1 through the magnetic head 2a and is fully pasted on the inner side of the air film surface 3. The magnetic head 2a is a double-lobe strip-shaped magnetic finished component, on which an anchor rod 2b made of aluminum alloy with barbs is tied, and the anchor rod 2b is then obliquely inserted into the heat-insulating board itself.

[0037] In the above solution, by fully pasting the lightweight non-combustible heat-insulating board 2 on the inner side of the air film, magnetic attraction between the lightweight non-combustible heat-insulating board 2 and the air film surface 3 is achieved, overcoming the technical defects of the air film heat-insulating structure in the current market; at the same time, the lightweight non-combustible heat-insulating board 2 is directly used as an internal decoration (surface layer) material to be applicable to crowded places and reduce the fire risk; the heat-insulating layer formed by fully pasting the lightweight non-combustible heat-insulating board 2 can eliminate cold / hot bridges and improve the heat-insulating and energy-saving effects of the air film; the lightweight non-combustible heat-insulating board 2 fully pasted is directly exposed to the inner side of the air film, which is conducive to the ventilation of the lightweight non-combustible heat-insulating board 2 to keep it dry, eliminating the phenomenon of condensation and icing on the inner side of the film surface and avoiding the growth of mold; it is conducive to dispersing the stress and strain of the overall film surface, eliminating stress concentration, balancing the stiffness in all directions, and improving the integrity of the overall film surface; at the same time, the heat-insulating layer is fully pasted by the lightweight non-combustible heat-insulating board 2, which is conducive to expanding the construction surface for on-site installation; this heat-insulating structure is conducive to the simultaneous decentralized processing of accessories, so that production can be effectively arranged, and it is also conducive to long-distance transportation without being restricted by the transportation radius. At the same time, it can achieve rapid on-site installation without being affected by the technical level and proficiency of construction workers, thereby reducing the labor intensity of construction workers and the management difficulty of managers, being conducive to construction installation and its safety management, and eliminating potential safety hazards.

[0038] Such as Figure 1-2 、 Figure 5As shown, in a preferred embodiment, the insulation board itself is rectangular, triangular or polygonal, and the lightweight non-combustible insulation board 2 as a whole is also rectangular, triangular or polygonal. The sides between adjacent lightweight non-combustible insulation boards 2 are tiled with each other to form an insulation layer. In this embodiment, the insulation board itself is made of Class A mineral wool board, and the general dimensions are length × width × thickness of 1500mm × 3000mm × (40mm - 80mm). According to the curvature and geometric shape of the air film and actual needs, the mineral wool board and other lightweight non-combustible insulation boards can also be cut into rectangles, triangles or polygons. The thickness of the mineral wool board and other lightweight non-combustible insulation boards 2 is determined according to each climate zone or the function of the air film, as well as heat insulation and energy conservation calculations. The lightweight non-combustible insulation board 2 is convenient for construction and installation, thus significantly improving the construction efficiency. The corresponding sides between adjacent lightweight non-combustible insulation boards 2 are tiled and connected, which can ensure the continuity and sealing of the lightweight non-combustible insulation board 2 and eliminate cold / hot bridges.

[0039] In order to realize the magnetic attraction between the lightweight non-combustible insulation board 2 and the suction cup 1, a set of magnetic heads 2a are respectively arranged at each end corner of the insulation board itself. As Figure 1-2 shown, in this embodiment, the anchor rod 2b binds the magnetic head 2a and inserts it into the insulation board itself. Both the magnetic head 2a and the anchor rod 2b are made of non-combustible metal materials, ensuring that the lightweight non-combustible insulation board 2 and its components are non-combustible and lightweight composite materials, and ensuring that the combustion performance grades of the combined materials and the surface layer materials are both Class A.

[0040] The aluminum alloy anchor rod 2b with inclined barbs is shown in detail in Figure 2 ; correspondingly, the magnetic attraction piece 1c nested in the suction cup 1 enables the lightweight non-combustible insulation board 2 to be magnetically attracted under the suction cup 1. Among them, the planar shapes of the suction cup 1 and the film patch 1a are generally square, circular or polygonal, and the magnetic attraction piece 1c is nested in the middle of the suction cup 1 and the film patch 1a.

[0041] In the above solution, the suction cup 1 magnetically attracts the lightweight non-combustible insulation board 2. This connection method is easy to install and disassemble, simple and fast, improves the installation quality and efficiency, and is also convenient for later maintenance and replacement; and this connection method is reliable, durable and stable; the connection method is not limited by the materials and shapes of the lightweight non-combustible insulation board 2 and the suction cup 1, and has strong versatility and adaptability.

[0042] In this embodiment, film gaskets 1b are respectively arranged on the sides of the suction cup 1 and its film patch 1a. The setting of the film gaskets 1b provides an installation space for the magnetic attraction piece 1c, and the film patch 1a and the film gaskets 1b are of an integral structure and are thermally welded to form the suction cup 1 on the inner side of the air film. Among them, the materials of the film patch 1a, the film gaskets 1b and the air film surface 3 are the same. The air film surface 3, the film patch 1a and the film gaskets 1b are cut and thermally welded at the same time.

[0043] During the installation process, the film patch 1a is thermally welded to the film gasket 1b, and then the film gasket 1b is thermally welded to the inner side of the air film surface 3. The thickness of the film gasket 1b is not less than that of the magnetic sheet 1c. The air film surface 3, the film patch 1a, and the film gasket 1b are all thermally welded and fabricated in the factory.

[0044] Specifically, the magnetic sheet 1c is nested in the open pocket formed by the thermal welding of the film patch 1a, the film gasket 1b, and the air film surface 3, and directly serves as the suction cup 1 of the lightweight non-combustible heat-insulating board 2. When installing the lightweight non-combustible heat-insulating board 2, the lightweight non-combustible heat-insulating board 2 and its magnetic head 2a can be directly magnetically attracted under the suction cup 1. The suction cups 1 arranged on the inner side of the air film have a two-way spacing of no more than 750 mm, that is, the spacing between two adjacent suction cups 1 is no more than 750 mm.

[0045] At the construction site, after the air film is inflated to the design air pressure, the installer only needs to align the lightweight non-combustible heat-insulating board 2 pre-installed with the magnetic head 2a with the suction cup 1, and the lightweight non-combustible heat-insulating board 2 will be magnetically attracted to the inner side of the air film, completing the on-site installation of the heat-insulating and decorative integrated material on the inner side of the air film. The on-site assembly rate is 100%, and there is no construction waste.

[0046] In some feasible embodiments, the magnetic sheet 1c is made of a material that can be attracted by the magnetic head 2a, such as a pure iron sheet, a thin steel sheet, a silicon steel sheet, a nickel-iron alloy sheet, a cobalt-iron alloy sheet, or a manganese-zinc ferrite sheet, which has good magnetic conductivity, thus having a reliable, durable, and stable magnetic attraction effect. The magnetic sheet 1c is 160×160, with the unit of mm, and the thickness does not exceed 3 mm. It is processed into a hollow rounded corner, adapted to the shape and size of the film patch 1a, meeting the usage requirements and saving production costs.

[0047] Such as Figure 1 、 Figure 3 、 Figure 4 As shown, round holes are opened at the geometric centers of the film patch 1a and the magnetic sheet 1c. In this embodiment, by opening round holes at the geometric center of the overall film patch 1a and the magnetic sheet 1c, the magnetic attraction requirements between the suction cup 1 on the inner side of the air film and the lightweight non-combustible heat-insulating board 2 can be met, meeting the requirements of lightweight production. At the same time, removing some materials to form the openings also reduces the self-weight of the film patch 1a.

[0048] Specifically, in this embodiment, each end angle of the lightweight non-combustible heat-insulating board 2 occupies one corner of the suction cup 1. When installing the lightweight non-combustible heat-insulating board 2 on-site, one lightweight non-combustible heat-insulating board 2 can be laid in each unit partition area of the air film surface 3, and one suction cup 1 on the inner side of the air film is respectively set at the end angles of each unit partition area, where Figure 5 The dotted line frame connecting the four suction cups 1 on the inner side of the air film shown is the position where the lightweight non-combustible heat-insulating board 2 is placed.

[0049] In the above solution, the lightweight non-combustible heat-insulating board 2 is magnetically attracted under the suction cup 1 by its magnetic suction head 2a. The lightweight non-combustible heat-insulating boards 2 are fully tiled, so that adjacent lightweight non-combustible heat-insulating boards 2 can be closely tiled together, achieving full coverage of heat insulation, thereby improving the heat insulation and energy-saving performance of the air film. At the same time, the fully tiled lightweight non-combustible heat-insulating boards 2 effectively resist the strain generated by the air film due to external forces, improving the safety and integrity of the air film and reducing the engineering cost.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0051] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "magnetic suction", "tiling", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0053] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0054] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A gas film heat insulation system for a magnetically attracted lightweight non-combustible heat insulation board inside a membrane, characterized in that: Including: A suction cup (1) and a lightweight non-combustible heat-insulating board (2). The suction cup (1) includes a film patch (1a), a film gasket (1b), and a magnetic sheet (1c). The film gasket (1b) is arranged around the film patch (1a). The magnetic sheet (1c) is nested in a pocket with a circular hole opened between the film patch (1a), the film gasket (1b), and the air film surface (3). The lightweight non-combustible heat-insulating board (2) includes the heat-insulating board itself, a magnetic head (2a), and an anchor rod (2b). The heat-insulating board itself is magnetically attracted under the suction cup (1) through the magnetic head (2a) and is fully pasted inside the air film surface (3). The magnetic head (2a) is a double-lobe strip-shaped magnetic finished component, on which the anchor rod (2b) made of aluminum alloy with barbs is tied, and the anchor rod (2b) is then obliquely inserted into the heat-insulating board itself.

2. The air film heat insulation system of the magnetically attracted lightweight non-combustible heat insulation board in the film according to claim 1, characterized in that: The planar shape of the heat-insulating board itself is fitted according to the cutting and pasting unit, the curved surface shape, and the curvature of the air film surface (3). The thickness of the heat-insulating board itself is determined according to thermal engineering calculations and relevant standards and specifications.

3. The air film heat insulation system of the magnetically attracted lightweight non-combustible heat insulation board in the film according to claim 1 or 2, characterized in that, The magnetic head (2a) is inserted at the end corners of the heat-insulating board itself on its plane, and the suction cup (1) is preset at a position corresponding to the magnetic head (2a) inside the air film surface (3).

4. The air film heat insulation system of the magnetically attracted lightweight non-combustible heat insulation board in the film according to claim 3, characterized in that The film patch (1a), the film gasket (1b), and the inside of the air film surface (3) are sequentially thermally welded and connected. The thickness of the film gasket (1b) is not less than the thickness of the magnetic sheet (1c). The air film surface (3), the film patch (1a), and the film gasket (1b) are all thermally welded and processed in the factory.

5. The air film heat insulation system of a magnetically attracted lightweight non-combustible heat insulation board in a film according to claim 4, characterized in that, The magnetic sheet (1c) is centrally arranged at the geometric center of the film patch (1a).

6. The air film heat insulation system of the in-membrane magnetic adsorption lightweight non-combustible heat insulation board according to claim 5, characterized in that, A circular hole is opened at the geometric center of the film patch (1a).

7. The air film heat insulation and heat preservation system of the magnetically attracted lightweight non-combustible heat insulation board in the film according to claim 5 or 6, characterized in that, The magnetic sheet (1c) is a pure iron sheet, a thin steel sheet, a silicon steel sheet, a silicon steel sheet, a nickel-iron alloy sheet, an iron-cobalt alloy sheet, or a manganese-zinc ferrite sheet.

8. The air film heat insulation system of the magnetically attracted lightweight non-combustible heat insulation board in the film according to claim 5 or 6, characterized in that, A circular hole is opened at the geometric center of the magnetic sheet (1c) to reduce its own weight.

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