CN113463761B - Air film heat insulation structure adapting to air pressure change and construction method - Google Patents

Air film heat insulation structure adapting to air pressure change and construction method Download PDF

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Publication number
CN113463761B
CN113463761B CN202110664745.8A CN202110664745A CN113463761B CN 113463761 B CN113463761 B CN 113463761B CN 202110664745 A CN202110664745 A CN 202110664745A CN 113463761 B CN113463761 B CN 113463761B
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heat insulation
air film
film
air
pressure
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CN113463761A (en
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周茂亦
劳歆淇
朱立立
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Zhongcheng Space Shenzhen Intelligent Technology Co ltd
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Zhongcheng Space Shenzhen Intelligent Technology Co ltd
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B1/3211—Structures with a vertical rotation axis or the like, e.g. semi-spherical structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/7675—Insulating linings for the interior face of exterior walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Building Environments (AREA)

Abstract

The invention provides an air film heat-insulating structure adapting to air pressure change, which comprises an air film, wherein the edge of the air film is sealed on a base body to define a building space; the air film heat insulation structure is characterized by further comprising a heat insulation adhesive layer, wherein the heat insulation adhesive layer is adhered to the inner wall of the air film; the first differential pressure sensor is used for measuring the differential pressure between the gas pressure in the gas film and the atmospheric pressure outside the gas film; a first pressure device connected to the building space for inflating the building space; the control system is respectively connected with the first differential pressure sensor and the first pressurizing equipment; the control system controls the speed of the first pressurizing equipment for inflating the building space according to the numerical value measured by the first differential pressure sensor, so that the gas pressure in the gas film and the atmospheric pressure outside the gas film are always kept at the preset differential pressure. The invention can ensure the support of the air film to the building main body.

Description

Air film heat insulation structure adapting to air pressure change and construction method
Technical Field
The invention relates to an air film building, in particular to an air film heat-insulating mechanism adapting to air pressure change and a construction method.
Background
In stadiums, warehouses, industrial plants, refrigeration houses and other scenes, an air film is usually adopted as a building shell, a set of intelligent electromechanical equipment is arranged, positive pressure is provided for a building space inside the air film, and a building main body is supported.
When the air film is used as a building shell, the pressure of the building space inside the air film needs to be ensured to be greater than the external atmospheric pressure, otherwise, the building main body cannot be supported. However, in some extreme environments, the temperature change will cause a pressure change, which results in the pressure inside the building space inside the air film being lower than the outside atmospheric pressure, so that the air film cannot support the building body.
The patent with the publication number of CN211774577U discloses a gas film building heat insulation structure, which comprises a gas film main body, wherein the outer side of the gas film main body is connected with a first adhesive layer, the outer side of the first adhesive layer is connected with an outer heat insulation layer, the inner side of the gas film main body is connected with a second adhesive layer, the inner side of the second adhesive layer is connected with an inner heat insulation layer, the gas film main body, the first adhesive layer, the outer heat insulation layer, the second adhesive layer and the inner heat insulation layer are all in close contact with the ground, the two sides of the outer heat insulation layer are both fixedly connected with side plates, the bottoms of the side plates are in close contact with the ground, the two sides of each side plate are both provided with a plurality of embedded parts embedded in the ground, the tops of the embedded parts are welded with connecting pieces, the tops of the side plates are provided with a plurality of connecting holes, the connecting pieces are clamped with the connecting holes, the sides of the two side plates, which are far away from each other, are both provided with sliding plates, sliding plates are internally and provided with traction plates, a plurality of limiting plates are welded at the top of one side, close to each other, of the two traction plates, springs are welded at one side, close to each other, of the two traction plates, one ends, close to each other, of the two springs are welded at one side, far away from each other, of the two side plates respectively, limiting grooves are formed in one sides, far away from each other, of the two connecting pieces on the same horizontal axis, and the limiting plates are clamped with the limiting grooves.
In this patent, the gas film main part includes a plurality of adhesive bonds, and the inside and outside heat preservation that is connected with the adhesive bond, when external atmospheric pressure changes, leads to each adhesive bond easily to and inside and outside heat preservation shrink or inflation, when inflation or shrink excessively, lead to very easily between each layer because of the degree of deformation is different and separate, and the support to the building main part is difficult to guaranteeing to inflation or shrink excessively. It is therefore desirable to provide an air film insulation structure that can adjust the building space pressure inside the air film according to air pressure changes.
Disclosure of Invention
The invention aims to at least solve the technical problem of ensuring that the pressure of a building space in an air film is higher than the external atmospheric pressure when the pressure changes due to temperature change, so that the air film can maintain the support for a building main body. In order to solve the above problems, the present invention provides an air film insulation structure adapted to air pressure changes, and the specific technical solution is as follows.
An air film heat-insulating structure adapted to air pressure change comprises
The edge of the air film is sealed on the substrate to define a building space;
the air film is characterized by also comprising a heat insulation adhesive layer, wherein the heat insulation adhesive layer is adhered to the inner wall of the air film;
the first differential pressure sensor is used for measuring the differential pressure between the gas pressure in the gas film and the atmospheric pressure outside the gas film;
a first pressure device connected to the building space for inflating the building space;
the control system is respectively connected with the first differential pressure sensor and the first pressurizing equipment; the control system controls the speed of the first pressurizing equipment for inflating the building space according to the numerical value measured by the first pressure difference sensor, so that the pressure of the gas in the gas film and the pressure of the atmosphere outside the gas film are always kept at a preset pressure difference.
The building air film is characterized by further comprising a protective film, the edge of the protective film is sealed on the base body, and the protective film is positioned on the inner side of the air film and divides the building space into a heat insulation cavity and a movable space.
Further, the gas film heat preservation structure further comprises a second differential pressure sensor for measuring the differential pressure between the gas pressure in the heat insulation cavity and the gas pressure in the movable space;
the second pressurizing device is connected with the heat insulation cavity and used for inflating the heat insulation cavity; the second differential pressure sensor and the second pressurizing equipment are respectively connected with the control system; the control system controls the speed of the second pressurizing device for inflating the heat insulation cavity according to the numerical values measured by the first pressure difference sensor and the second pressure difference sensor, so that the atmospheric pressure outside the air film, the gas pressure in the heat insulation cavity and the gas pressure in the movable space are always kept at the preset pressure difference.
Furthermore, the heat insulation layer comprises a plurality of flexible heat insulation sheets, a splicing seam is formed between every two adjacent flexible heat insulation sheets, and a gap filling adhesive is filled in the splicing seam.
Furthermore, one side of the heat insulation paste layer, which is far away from the air film, is provided with a plurality of sealing curtains; each sealing curtain covers a splicing seam between two adjacent rows of flexible heat insulation sheets, and an inflation cavity is defined between each sealing curtain and the heat insulation layer.
Furthermore, the sealing curtain is provided with a first edge and a second edge which are opposite, the first edge is bonded on one of the two adjacent rows of the flexible heat insulation sheets, and the second edge is bonded on the other of the two adjacent rows of the flexible heat insulation sheets.
Further, the inflation cavity is filled with inert gas.
Further, the splicing edge of one of the two adjacent flexible heat insulation sheets extends and protrudes to form a first overlapping part, the splicing edge of the other of the two adjacent flexible heat insulation sheets extends and protrudes to form a second overlapping part, and the first overlapping part is overlapped on the second overlapping part. On the other hand, the invention also provides a construction method for constructing any one of the gas film heat-insulating structures, which comprises the following steps:
sealing and fixing the edge of the air film to the substrate and defining a building space;
and inflating the building space to expand the air film, and attaching a heat insulation layer on the inner wall of the air film.
Further, before the heat insulation paste layer is pasted, air is filled into the building space to enable the pressure difference between the inside of the building space and the outside of the building space to be larger than the preset pressure difference; then sequentially attaching a plurality of flexible heat-insulating sheets on the inner wall of the air film to form a heat-insulating adhesive layer; finally, the pressure intensity in the building space is reduced, and the pressure difference between the inside and the outside of the air film is maintained in a preset pressure difference state.
Has the advantages that: 1. according to the air film heat insulation structure provided by the invention, the first pressurizing equipment is adjusted to inflate the building space according to the pressure difference between the atmospheric pressure outside the air film and the air pressure inside the air film, which is measured by the first pressure difference sensor, so that the pressure difference inside and outside the air film is always maintained within the preset pressure difference, namely, the air pressure inside the building space is always greater than the atmospheric pressure outside the building space, and therefore, the air film can adapt to the pressure change caused by the change of the external temperature and always maintain the support of a building main body; and the pressure difference between the inside and the outside of the air film is always maintained in the preset pressure difference, so that the repeated expansion and contraction of the air film can be avoided, the influence on the fatigue life of the air film is reduced, and the long-time use of the air film is ensured.
2. According to the air film heat insulation structure provided by the invention, the heat insulation paste layer formed by the plurality of flexible heat insulation sheets is pasted on the inner wall of the air film, the abutted seams between the adjacent heat insulation paste layers are filled by the gap filling adhesive, the heat insulation paste layer has a good heat insulation effect, the problems of heat insulation material loss and the like between the adjacent flexible heat insulation sheets can be avoided, and the heat insulation effect of the heat insulation paste layer is ensured; and through guaranteeing that the pressure difference inside and outside the building space is maintained under the preset pressure difference, the repeated expansion and contraction of the heat-insulating paste layer are avoided, the influence on the fatigue life of the heat-insulating paste layer is reduced, and the long-time use of the heat-insulating paste layer is guaranteed.
3. Before the heat insulation paste layer is pasted, the building space is inflated, so that the pressure difference between the inside and the outside of the building space is larger than a preset pressure difference, the expansion degree of the air film is larger than that in a normal state, then the flexible heat insulation sheet is pasted on the air film to form the heat insulation paste layer, and finally the pressure intensity in the building space is reduced, so that the pressure difference between the inside and the outside of the air film is maintained in a preset pressure difference state; because the elastic coefficient of the air film is far greater than that of the flexible heat insulation sheet, the air film is inflated firstly, then the flexible heat insulation sheet is attached, and finally the preset pressure difference is maintained, so that the flexible heat insulation sheet keeps certain shrinkage in a normal state, and the flexible heat insulation sheet is prevented from being influenced by excessive expansion of the air film.
Drawings
FIG. 1 is a schematic cross-sectional view of an air film insulation structure in an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of a further improved air film insulation in an embodiment of the present invention;
FIGS. 3a-g are schematic illustrations of 7 collations of flexible thermal insulating sheet material in an embodiment of the present invention;
FIG. 4 is an enlarged view of area A of FIG. 1;
FIG. 5 is an enlarged view of an alternative patchwork seam of area A of FIG. 1;
FIG. 6a is a schematic sectional view of an air film insulation structure with a sealing curtain added at a splicing seam in an embodiment of the invention;
FIG. 6b is an enlarged view of region C of FIG. 6 a;
FIG. 7 is a partial enlarged view of the self-adhesive heat-insulating tape added to the joint seam of the present invention;
FIG. 8 is an enlarged view of area B of FIG. 1;
FIG. 9 is an enlarged schematic view of an alternative configuration of region B of FIG. 1;
FIG. 10 is a schematic view of a structure of a gas film surface in an embodiment of the present invention;
FIG. 11 is a schematic view of another structure of the gas film surface in the embodiment of the present invention;
FIG. 12 is a schematic top view of a portion of a wire mesh in an embodiment of the present invention;
FIG. 13 is a schematic cross-sectional view taken along A-A of FIG. 12;
FIG. 14 is an exploded view of another modified embodiment of the securing assembly and the bowden cable according to the present invention.
Reference numerals: 1. a substrate; 2. a gas film; 3. a first differential pressure sensor; 5. a first pressurizing device; 6. a wire mesh; 7. a ground heat insulation layer; 8. splicing and sewing; 9. a thermally insulating cavity; 10. a building space; 11. a flexible thermal insulation sheet; 12. a second differential pressure sensor; 13. a second pressurizing device; 14. an activity space; 15. a first lap joint portion; 16. a second lap joint portion; 17. a sealing curtain; 18. a self-adhesive heat-insulating tape; 19. pressing a plate; 20. pre-burying a rod; 21. locking the nut; 22. an aluminum card slot member; 23. anticorrosive wood; 24. concave points; 25. a channel; 26. a fixing assembly; 27. a short steel cord; 28. a spring; 29. an end cap; 30. an inflation cavity; 31. a first edge; 32. a second edge; 33. and (5) protecting the film.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1, the air film insulation structure adapted to air pressure changes according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings, and the air film insulation structure according to the embodiment includes an air film 2, a first differential pressure sensor 3, a first pressurization device 5, and a control system.
Specifically, a base body 1 is formed on the ground in advance, the base body 1 can be formed by pouring concrete or can be a counterweight body, and the edge of an air film 2 is sealed on the base body 1 to define a building space 10 below the air film 2.
The first differential pressure sensor 3 is arranged on the air film 2, one air pipe of the first differential pressure sensor is communicated with the inside of the air film 2, and the other air pipe of the first differential pressure sensor is communicated with the outside of the air film 2 and is used for measuring the differential pressure between the air pressure in the air film 2 and the atmospheric pressure outside the air film 2; the first pressurizing device 5 is connected to the building space 10 for inflating the interior of the building space 10; the first differential pressure sensor 3 is connected with the control system and transmits a measured differential pressure value to the control system; the control system is also connected with the first pressurizing device, and controls the speed of the first pressurizing device 5 for inflating the building space 10 according to the pressure difference value measured by the first pressure difference sensor 3, so that the pressure difference between the inside and the outside of the air film is kept within a preset pressure difference range.
The control system may be an MCU (micro Controller Unit) or a PLC (Programmable logic Controller).
According to the air film heat preservation structure adapting to air pressure change, the first pressure difference sensor 3 is used for measuring the pressure difference between the inside and the outside of the air film 2, and the control system is used for controlling the speed of the first pressurizing device 5 for inflating the building space 10, so that the pressure difference between the inside and the outside of the air film 2 is always maintained within the preset pressure difference. Make air film 2 can keep expanding at last like this, even external atmospheric pressure changes still can keep supporting to the building subject to because the outer inside and outside pressure differential of air film 2 remains throughout in predetermineeing the pressure differential, air film 2 can not expand or contract because of external pressure variation repeatedly, improves air film 2's life.
It should be noted that the preset pressure difference is a pressure difference range, and can be determined according to various factors such as an influence factor of expansion of the air film 2, a pressure change range of the environment, and the like, in this embodiment, the preset pressure difference is 250Pa to 500Pa, that is, the pressure of the air inside the building space 10 is always greater than the pressure of the air outside the building space 10 by 250Pa to 500 Pa.
As a further improvement of this embodiment, as shown in fig. 2, the air film insulation structure provided in this embodiment further includes a protection film 33, an edge of the protection film 33 is sealed on the substrate 1, and the protection film 33 is located inside the air film 2 to divide the building space 10 into the insulation cavity 9 and the activity space 14.
A second differential pressure sensor 12 is arranged on the protective film 33, one air pipe of the second differential pressure sensor 12 is communicated with the heat insulation cavity 9, and the other air pipe is communicated with the movable space 14; measuring the differential pressure between the gas pressure in the heat insulation cavity 9 and the gas pressure in the active space 14 through a second differential pressure sensor 12; the heat insulation cavity 9 is also connected with a second pressurizing device 13 for inflating the heat insulation cavity 9; the second differential pressure sensor 12 is connected with the control system and transmits the measured differential pressure value to the control system; the control system is also connected with a second pressurizing device 13, and controls the speed of the second pressurizing device 13 for inflating the heat insulation cavity 9 according to the numerical values measured by the first pressure difference sensor 3 and the second pressure difference sensor 12, so that the pressure of the gas in the heat insulation cavity 9 is always greater than the atmospheric pressure outside the building space 10 and less than the pressure of the gas in the movable space 14, and is maintained under the preset pressure difference.
The gas film 2 is protected by the protective film 33, and the gas film 2 can be prevented from being damaged. A heat insulation cavity 9 is formed between the air film 2 and the protective film 33, the heat insulation cavity 9 is in a sealed state, and the heat insulation effect of the air film heat insulation structure is further improved through the heat insulation cavity 9. When the external atmospheric pressure changes, the heat insulation cavity 9 is used as a buffer, and under the condition that the air film 2 keeps supporting the building main body and avoids the excessive expansion and contraction of the air film 2, the required change of the air pressure in the activity space 14 is reduced as much as possible, the stability of the air pressure in the activity space 14 is ensured, and the influence on people or equipment in the activity space 14 is avoided.
Specifically, the preset pressure difference between the outside of the air film 2 and the heat insulation cavity 9 is 200-300 Pa, and the pressure difference between the heat insulation cavity 9 and the movable space 14 is 100-200 Pa. Assuming that the pressure difference between the outside of the air film 2 and the heat insulation cavity 9 is 250Pa and the pressure difference between the heat insulation cavity 9 and the movable space 14 is 150Pa at a certain moment, if the outside air pressure rises by 150Pa, the air pressure in the heat insulation cavity 9 needs to rise by 100Pa to maintain the preset pressure difference between the outside of the air film 2 and the heat insulation cavity 9, so as to ensure that the air film 2 supports the building main body and reduce the change amount of contraction; at this time, the pressure difference between the heat insulation cavity 9 and the movable space 14 can be maintained only by increasing the pressure in the movable space 14 by 50Pa, and the expansion of the protective film 33 is ensured, so that when the external air pressure changes, the heat insulation cavity 9 is used as a buffer, the change of the pressure in the movable space 14 required is small, the change of the body feeling of a person in the movable space 14 is ensured to be small, and the influence on equipment is small.
As a further improvement of this embodiment, the heat insulation chamber 9 can be filled with inert gas to form an inert gas heat insulation layer to improve the heat insulation effect, and the second pressurizing device 13 is connected with the container filled with inert gas, so that the heat insulation chamber 9 is always filled with inert gas
As a further improvement of this embodiment, the air film thermal insulation structure provided by this embodiment further includes a steel cable net 6, the steel cable net 6 is bound outside the air film 2, and a lower peripheral edge of the steel cable net 6 is fixed on the base body 1.
In this embodiment, the steel cable net 6 can be additionally arranged outside the air film 2, the air film 2 is covered by the steel cable net 6, the steel cable net 6 has a binding effect on the air film 2, and the tensile strength of the air film 2 can be improved, so that the air film 2 can be applied to large-span air film 2 buildings, for example, large-span air film 2 buildings such as a refrigerator.
As a further modification of the present embodiment, as shown in fig. 12 and 13, the steel cable net 6 includes a plurality of fixing members 26, and a short steel cable 27 for connecting adjacent fixing members 26; the fixing member 26 includes at least two sleeves, each of which is provided with a spring 28, and one end of the spring 28 is connected to the short steel cable 27 and the other end is connected to the center of the fixing member 26.
More specifically, when each anchoring element 26 comprises two sleeves, adjacent anchoring elements 26 are connected by short cables 27 to form a plurality of parallel long cable elements for restraining the air film 2, the cable mesh 6 of the above-described construction being suitable for use in a cylindrical air film insulation structure. Each fixing assembly 26 may further include a plurality of three, four, or more sleeves in order to accommodate other shapes of air film insulation structures and improve the binding effect on the air film 2; fig. 12 shows a schematic structural diagram of a part of the wire rope net 6 when each fixing component 26 comprises four sleeves, a spring 28 is respectively arranged in each sleeve, a central column for connecting with the spring 28 is arranged in the center of the wire rope net 6, one end of the spring 28 is connected with the central column, the other end of the spring 28 is connected with a short wire rope 27, and a plurality of fixing components 26 are respectively connected through the short wire ropes 27 to form the wire rope net 6 which is arranged in a staggered manner transversely and longitudinally.
If the steel cable net 6 is formed by directly binding long steel cables commonly used, the formed steel cable net 6 can bind the air film 2 with a specific expansion volume, when the air film 2 is too large, the steel cables are easy to break, and when the air film 2 is too small, the steel cable net 6 cannot well bind the air film 2; in the using process of the air film 2, when the external pressure intensity changes, a certain process is needed for adjusting the internal and external pressure intensities of the air film 2, and in the process, the air film 2 is difficult to expand or contract.
As a further improvement of this embodiment, as shown in fig. 14, an end cap 29 is respectively screwed to an end of each of the sleeves, a through hole for receiving the short steel cable 27 is formed in the middle of the end cap 29, the short steel cable 27 passes through the end cap 29 and then is wound into a knot in the sleeve, and the knot is used to limit the maximum extension length of the spring 28. By adjusting the length of the end cap 29 threaded onto the sleeve, the maximum extension of the spring 28 can be adjusted. The maximum expansion degree of the air film 2 at different positions can be changed by adjusting the maximum stretching length of the spring 28 at different positions in the steel cable net 6; the steel cable net 6 only covers outside the air film 2, and after the maximum expansion degree of the air film 2 at different positions is limited, the air film 2 can expand towards other positions, so that the expanded shape of the air film 2 can be finely adjusted to adapt to different building specific structures.
As a further improvement of this embodiment, the air film insulation structure provided by this embodiment further includes a thermal insulation layer, where the thermal insulation layer is attached to the inner wall of the air film 2, preferably to the inner wall of the air film 2, and the thermal insulation layer is protected by the air film 2 and the protection film 33 respectively; the heat insulation layer comprises a plurality of flexible heat insulation sheets 11, a splicing seam 8 is formed between every two adjacent flexible heat insulation sheets 11, and a gap filling adhesive is filled in the splicing seam 8.
It should be noted that the heat insulating layer may be made of a flexible heat insulating material with a low thermal conductivity coefficient, such as a flexible rubber and plastic heat insulating material, which is light in weight, and the flexible material has elasticity and can be bent to facilitate construction in a pasting manner.
Adopt the subsides of multi-disc flexible thermal-insulated sheet 11 to establish on air film 2, the thermal-insulated adhesive tape of being convenient for is laminated with air film 2, guarantees that thermal-insulated adhesive tape can cover air film 2 completely, avoids appearing the problem of insulation material disappearance between the adjacent thermal-insulated sheet. When external atmospheric pressure changes, even control aerifys in 14 and thermal-insulated chamber 9 and maintains thermal-insulated chamber 9 and external preset pressure differential, but atmospheric pressure changes and has certain process, still can't avoid the inflation or the shrink of air film 2 completely, adopt the flexible thermal-insulated sheet 11 of multi-disc to form thermal-insulated pad pasting, when air film 2 has certain inflation or shrink, because there is the piece seam 8 and flexible thermal-insulated sheet 11 itself to have certain elasticity between the flexible thermal-insulated sheet 11, make thermal-insulated pad pasting expansion or shrink that can be even, thereby avoid thermal-insulated pad pasting to warp inhomogeneously, guarantee thermal-insulated effect and the life on thermal-insulated pad pasting.
As a further improvement of this embodiment, referring to fig. 1, 2 and 3a-g, the present invention provides a thermal insulation paste in which each flexible thermal insulation sheet 11 is sequentially fixed to the inner wall of the air film 2 by adhesive in a predetermined direction according to a predetermined rule. Preferably, each flexible insulating sheet 11 has the dimensions: the length is 2 meters to 5 meters, and the width is 0.5 meters to 2 meters, so, through piecing together in proper order, make the inner wall of air film 2 evenly covered by flexible thermal-insulated sheet 11 completely, and, also, it is convenient to construct.
It should be noted that the tiling direction and the tiling rule of the plurality of flexible heat insulating sheets 11 can be freely selected as required, for example, the flexible heat insulating sheets 11 can be tiled sequentially in the longitudinal direction and the transverse direction, arranged side by side in multiple rows, and the like, and in addition, the flexible heat insulating sheets 11 with shapes can be cut as required at irregular positions such as three-dimensional arched surfaces and corners, and arranged in irregular arrangements, as shown in fig. 3a to 3g, 7 different tiling modes are shown.
Referring to fig. 3a to 3b, in one embodiment of the present invention, a plurality of flexible thermal insulation sheets 11 are arranged on the gas film 2 in a plurality of rows; each row of flexible heat insulation sheets 11 is formed by sequentially splicing the flexible heat insulation sheets 11 in one direction in the longitudinal direction and the transverse direction, the flexible heat insulation sheets 11 in multiple rows are sequentially spliced in the other direction in the longitudinal direction and the transverse direction, and splicing seams 8 on two adjacent rows of flexible heat insulation sheets 11 are arranged in a staggered mode.
That is, the plurality of flexible heat insulating sheets 11 are sequentially tiled in one of the longitudinal direction and the transverse direction to form a row of flexible heat insulating sheets 11, and then sequentially tiled in the other of the longitudinal direction and the transverse direction to form a plurality of rows of flexible heat insulating sheets 11, for example, the plurality of flexible heat insulating sheets 11 in the same row are sequentially tiled in the longitudinal direction, and the plurality of rows of flexible heat insulating sheets 11 are sequentially tiled in the transverse direction, so that a heat insulating layer can be tiled and completely covers the inner wall of the air film 2. Furthermore, the patchwork seams 8 on two adjacent rows of flexible insulating sheets 11 are staggered. The splicing seams 8 can be dispersed at different positions, and the tensile property is improved. It is to be understood that the tiling direction of the flexible thermal insulation sheet 11 is not limited to the transverse or longitudinal tiling described in the above embodiments, and any other tiling direction may be used, and the tiling direction of the flexible thermal insulation sheet 11 is not limited to the present application.
Furthermore, the patchwork seams 8 between two adjacent flexible insulating sheets 11 may be of different shapes, for example, a "straight" patchwork seam 8 (as shown in fig. 4), a "Z" or a stepped patchwork seam 8 (as shown in fig. 5).
As a further modification of the present embodiment, referring to fig. 5, a first overlapping portion 15 is formed along an extending projection on the splicing edge of one of the two adjacent flexible thermal insulation sheets 11, a second overlapping portion 16 is formed along an extending projection on the splicing edge of the other of the two adjacent flexible thermal insulation sheets 11, and the first overlapping portion 15 overlaps the second overlapping portion 16 and forms a zigzag-shaped splicing seam 8.
In this embodiment, utilize "Z" font patchwork seam 8 that first overlap joint portion 15 and the 16 looks overlap joints of second overlap joint portion formed, on the one hand, when connecting between two adjacent flexible thermal-insulated sheets 11 can be guaranteed, area of contact is bigger, when the joint filling adhesive is filled, it is more firm reliable to connect, on the other hand, when gas film 2 inflation, even relative motion distance is great between two adjacent flexible thermal-insulated sheets 11, patchwork seam 8 can not fracture completely, therefore, the holistic tensile strength of flexible thermal-insulated flitch layer has been improved, it is more reliable to guarantee thermal-insulated effect.
Referring to fig. 1, as a further improvement of this embodiment, the air film insulation structure further includes a ground insulation layer 7, the ground insulation layer 7 is laid on the ground in the building space 10, and the edge of the ground insulation layer 7 extends along the surface of the base body 1 and is connected with the insulation layer in a seamless manner.
In this embodiment, the ground heat insulating layer 7 extends upward from the surface of the base 1, and the lower peripheral edge of the flexible heat insulating sticker layer is seamlessly connected with the upward extending portion of the ground heat insulating layer 7, for example, bonded by an adhesive, so that the building space 10 of the whole air film 2 is completely wrapped by the heat insulating material (the flexible heat insulating sticker layer and the ground heat insulating layer 7), so that no gap exists at the joint, and further, the cold bridge phenomenon which may occur can be avoided, and the heat insulating effect is improved.
As a further improvement of this embodiment, as shown in fig. 6a and 6b, a plurality of sealing curtains 17 are disposed on the side of the thermal insulation layer facing away from the air film 2; each sealing curtain 17 covers the joint 8 between two adjacent rows of the flexible heat insulation sheets 11, and an air inflation cavity 30 is defined between each sealing curtain 17 and the heat insulation layer.
Specifically, a splicing seam 8 is formed between any two adjacent rows of flexible heat insulation sheets 11 in each row of flexible heat insulation sheets 11, and the splicing seam 8 is installed with a preset rule and extends in a certain preset direction; the number of the sealing curtains 17 is equal to the number of the abutted seams 8 formed between the rows of the flexible heat insulation sheets 11 and corresponds to one another; each sealing curtain 17 is provided with a first edge 31 and a second edge 32 which are opposite, wherein the first edge 31 is bonded on one of the two adjacent rows of the flexible heat insulation sheets 11, the second edge 32 is bonded on the other of the two adjacent rows of the flexible heat insulation sheets 11, an air inflation cavity 30 is defined between each sealing curtain 17 and each flexible heat insulation sheet 11, the extending direction of the air inflation cavity 30 is consistent with the extending direction of the splicing seams 8, so that the splicing seams 8 are sealed in the air inflation cavity 30, and inert gas is filled in the air inflation cavity 30.
The splicing seams 8 are sealed through the sealing curtains 17, so that the connection sealing effect of the splicing seams 8 is better, and the heat insulation effect is improved. On the other hand, as described above, in the use of the gas film 2 in construction, the gas film 2 may be changed in height and form, and the gas film 2 is subjected to tension in the transverse direction and the longitudinal direction, in which case, the adjacent two rows of the insulating sheets are also subjected to tension. Although in the foregoing embodiment, the filling of the joint adhesive in the patchwork seam 8 and the compression property of the thermal insulation material itself are adopted, which can effectively prevent the patchwork seam 8 from cracking and other problems to a certain extent, after long-term use, the flexible thermal insulation sheet 11 is aged, the patchwork seam 8 still has a possibility of cracking, and after cracking, the thermal insulation effect is reduced, and by arranging the sealing curtain 17 at the patchwork seam 8, even if the patchwork seam 8 cracks, because the patchwork seam 8 is sealed by the sealing curtain 17, and the inflation cavity 30 inside the patchwork seam is filled with inert gas, so that the good thermal insulation effect can be maintained, and the reliability and durability of the thermal insulation effect of the gas film thermal insulation structure are improved.
In addition, by using the sealing curtain 17 to form a bridging structure with the two adjacent rows of flexible heat insulation sheets 11, when the flexible heat insulation sheets 11 are subjected to a tensile force, the sealing curtain 17 can play a role in enhancing the connection strength, and cracking is avoided.
As another improvement of this embodiment, as shown in fig. 7, one side of the thermal insulation layer away from the air film 2 can also be covered by sticking the splicing seam 8 with the self-adhesive thermal insulation tape 18, so that the splicing seam 8 is protected by the self-adhesive thermal insulation tape 18, which can improve the joint strength of the splicing part and the thermal insulation effect of the splicing part.
It should be noted that the flexible heat insulation sheet 11 is generally made of a flexible heat insulation material, such as a flexible foamed rubber plastic heat insulation material with a closed-cell structure, which has good elasticity and 180-degree bending performance, does not break or bend, has a low thermal conductivity (λ ≦ 0.034W/m · K) and excellent fireproof performance (B1 grade), is applied at a temperature range of-50 ℃ to 105 ℃, is easy to install, safe, environment-friendly, does not absorb water, and is mold-proof and antibacterial.
As a further improvement of this embodiment, referring to fig. 8, the edge of the gas film 2 is press-sealed to the substrate 1 by a pressing assembly.
That is to say, the border of air film 2 compresses tightly through a subassembly and seals on base member 1, for example, the border of air film 2 compresses tightly through compressing tightly the subassembly and seals in the top surface of base member 1, so, air film 2 can form sealedly with base member 1, utilizes the compressing tightly effect of subassembly to 2 borders of air film, can reach better sealed effect, improves the gas tightness of air film 2.
Illustratively, the pressing assemblies may each include a pressing plate 19, a pre-embedded rod 20 and a locking nut 21, wherein the pressing plate 19 is located above the edge of the air film 210; the lower extreme of embedded rod 20 bury underground in the base member 1, the upper end of embedded rod 20 certainly base member 1 stretches out and passes in proper order the border and the clamp plate 19 of air film 2, lock nut 21 with the upper end screw-thread fit of embedded rod 20, and right clamp plate 19 is exerted pressure and will the border of air film 2 compresses tightly sealed on the base member 1, its simple structure, construction convenience, sealed effectual.
As another modification of this embodiment, referring to fig. 9, the edge of the air film 2 is fixed to the substrate 1 by pre-buried aluminum groove extrusion sealing. Pre-buried aluminium draw-in groove spare 22 in base member 1, the top of aluminium draw-in groove spare 22 has the opening, and the lower border of air film 2 is arranged in aluminium draw-in groove spare 22 to insert anticorrosive wood 23 from the opening part, utilize anticorrosive wood 23 with the lower border chucking of air film 2 in aluminium draw-in groove spare 22, realize the lower border of air film 2 and base member 1's sealed fixed, its simple structure, the construction is simple and convenient, and, sealed effect is better.
As a further improvement of this embodiment, the surface of the air film 2 attached to the heat insulating layer is a rough surface, so that the rough surface can make the bonding effect between the flexible heat insulating sheet 11 and the air film 2 firmer, and prevent the flexible heat insulating sheet 11 from falling off from the air film 2 after long-term use.
Optionally, as shown in fig. 10, a plum blossom-shaped arranged concave point 24 may be arranged on one side of the air film 2 attached to the heat insulating layer; the one side of thermal-insulated pad pasting and the laminating of air film 2 is provided with the bump with the shape of concave point 24, size adaptation, through the cooperation of concave point 24 and bump, avoids relative movement between air film 2 and the thermal-insulated pad pasting, guarantees that bonding is firm between air film 2 and the thermal-insulated pad pasting.
Optionally, as shown in fig. 11, the side of the air film 2 attached to the heat insulating layer may be provided with channels 25 arranged at intervals; thermal-insulated one side of pasting layer and the laminating of air film 2 is provided with channel 25 complex sand grip, through the cooperation of channel 25 and sand grip, avoids air film 2 and thermal-insulated relative movement between pasting the layer, guarantees that air film 2 and bonding between the thermal-insulated layer are firm.
Example 2
The embodiment provides a construction method for constructing the air film heat-insulating structure in the embodiment, which specifically comprises the following steps
Firstly, the edge of the air film 2 is hermetically fixed to the substrate 1 and a building space 10 is defined;
then, the building space 10 is inflated to expand the air film 2, and a heat insulation layer is attached to the inner wall of the air film 2.
As a further improvement of this embodiment, before the heat insulation layer is attached, air is inflated into the building space 10 to make the pressure difference between the inside of the building space 10 and the outside of the building space 10 greater than a preset pressure difference; then, a plurality of flexible heat insulation sheets 11 are sequentially attached to the inner wall of the air film 2 to form a heat insulation layer, and finally, the pressure intensity in the building space 10 is reduced, so that the pressure difference between the inside of the building space 10 and the outside of the building space 10 is maintained in a preset pressure difference state.
Before the heat insulation layer is attached, the pressure difference between the interior of the building space 10 and the exterior of the building space 10 is made larger than the preset pressure difference, and the volume of the air film 2 expanded in a normal state is larger; because the elasticity of the gas film 2 is larger than that of the flexible heat insulation sheet 11, the gas film 2 inevitably expands in the normal use process, the flexible heat insulation sheet 11 is attached under the condition that the expansion volume of the gas film 2 is larger, and the gas film 2 is restored to the normal state after the attachment is finished, so that a certain elongation is reserved on the flexible heat insulation sheet 11, and the flexible heat insulation sheet 11 is prevented from being excessively elongated to generate cracks.
As a further improvement of the present embodiment, the attaching of the plurality of flexible heat insulation sheets 11 on the inner wall of the air film 2 in sequence includes:
the inner wall of the gas film 2 is firstly purified.
And then coating a membrane surface treating agent base layer on the inner wall of the gas membrane 2, and coating an adhesive layer on the membrane surface treating agent base layer.
Finally, the flexible heat insulation sheet 11 is spread on the inner wall of the air film 2, so that the flexible heat insulation sheet 11 is fixedly adhered to the inner wall of the air film 2 through the adhesive layer.
The inner wall surface of the gas film 2 is free of impurities such as dust through purification treatment, the film surface treating agent base layer is convenient to brush, the binding force of the adhesive layer can be improved through the film surface treating agent base layer, the bonded flexible insulating sheet is not prone to falling off, and the bonding is firmer and more reliable.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the invention, and all the properties or uses are considered to be within the scope of the invention.

Claims (8)

1. A construction method for constructing an air film heat-insulating structure adapting to air pressure change comprises an air film (2), wherein the edge of the air film (2) is sealed on a base body (1) to define a building space (10); the method is characterized in that:
the air film heat preservation structure further comprises:
the heat insulation adhesive layer is adhered to the inner wall of the air film (2);
the first differential pressure sensor (3) is used for measuring the differential pressure between the gas pressure in the gas film (2) and the atmospheric pressure outside the gas film (2);
a first pressure device (5), said first pressure device (5) being connected to said building space (10) for inflating the building space (10);
a control system connected to the first differential pressure sensor (3) and the first pressure device (5), respectively; the control system controls the speed of the first pressurizing equipment (5) for inflating the building space (10) according to the numerical value measured by the first differential pressure sensor (3), so that the gas pressure in the gas film (2) and the atmospheric pressure outside the gas film (2) are always maintained under the preset differential pressure;
the construction method comprises the following steps:
-sealingly fixing the edge of the gas film (2) to the base body (1) and defining a building space (10);
inflating the building space (10) to expand the air film (2), and attaching a heat insulation layer on the inner wall of the air film (2);
before the heat insulation layer is attached, the building space (10) is inflated to ensure that the pressure difference between the inside of the building space (10) and the outside of the building space (10) is greater than the preset pressure difference; then sequentially sticking a plurality of flexible heat-insulating sheets (11) on the inner wall of the air film (2) to form a heat-insulating sticking layer; finally, the pressure intensity in the building space (10) is reduced, so that the pressure difference between the inside and the outside of the air film (2) is maintained in a preset pressure difference state.
2. The construction method for constructing the air film heat insulation structure adapting to the air pressure change as claimed in claim 1, wherein: still include protection film (33), the border of protection film (33) is sealed on base member (1), protection film (33) are located gas film (2) inboard is divided into heat-insulating chamber (9) and activity space (14) with building space (10).
3. The construction method for constructing the air film heat insulation structure adapting to the air pressure change according to claim 2, characterized in that: the gas film heat-insulating structure also comprises a second differential pressure sensor (12) for measuring the differential pressure between the gas pressure in the heat-insulating cavity (9) and the gas pressure in the movable space (14);
a second pressurizing device (13), wherein the second pressurizing device (13) is connected with the heat insulation cavity (9) and used for inflating the heat insulation cavity (9); the second differential pressure sensor (12) and the second pressurizing device (13) are respectively connected with a control system; the control system controls the speed of the second pressurizing device (13) for inflating the heat insulation cavity (9) according to the numerical values measured by the first pressure difference sensor (3) and the second pressure difference sensor (12) so that the atmospheric pressure outside the air film (2), the gas pressure inside the heat insulation cavity (9) and the gas pressure inside the movable space (14) are always kept at a preset pressure difference.
4. The construction method for constructing the air film heat insulation structure adapting to the air pressure change as claimed in claim 1, wherein: the heat insulation paste layer comprises a plurality of flexible heat insulation sheets (11), a splicing seam (8) is formed between every two adjacent flexible heat insulation sheets (11), and a gap filling adhesive is filled in the splicing seam (8).
5. The construction method for constructing the air film heat insulation structure adapting to the air pressure change as claimed in claim 4, wherein: a plurality of sealing curtains (17) are arranged on one side of the heat insulation paste layer, which is far away from the air film (2); each sealing curtain (17) covers a splicing seam (8) between two adjacent rows of the flexible heat insulation sheets (11), and an air filling cavity (30) is defined between each sealing curtain (17) and the heat insulation layer.
6. The construction method for constructing the air film heat insulation structure adapting to the air pressure change as claimed in claim 5, wherein: the sealing curtain (17) is provided with a first edge (31) and a second edge (32) which are opposite, the first edge (31) is adhered to one of the two adjacent rows of the flexible heat insulation sheets (11), and the second edge (32) is adhered to the other of the two adjacent rows of the flexible heat insulation sheets (11).
7. The construction method for constructing the air film heat insulation structure adapting to the air pressure change as claimed in claim 5, wherein: the gas-filled cavity (30) is filled with inert gas.
8. The construction method for constructing the air film heat insulation structure adapting to the air pressure change as claimed in claim 2, wherein: inert gas is filled in the heat insulation cavity (9).
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