CN114278050A - Segmental prefabricated heat-preservation and heat-insulation type fabricated structure air duct and construction method thereof - Google Patents
Segmental prefabricated heat-preservation and heat-insulation type fabricated structure air duct and construction method thereof Download PDFInfo
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- CN114278050A CN114278050A CN202210140788.0A CN202210140788A CN114278050A CN 114278050 A CN114278050 A CN 114278050A CN 202210140788 A CN202210140788 A CN 202210140788A CN 114278050 A CN114278050 A CN 114278050A
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Abstract
The invention belongs to the technical field of air ducts, and particularly relates to a segment prefabricated structure air duct and a construction method. The invention meets the requirements of ventilation, air conditioning and smoke prevention and exhaust, meets the requirements of heat preservation and heat insulation performance, fireproof performance and assembly type installation performance, can effectively solve the problems of more air duct installation procedures, long installation period, large occupied underground space, poor durability, inconvenient maintenance and the like, and also avoids the problem of damage to the overall performance of the insulating layer and the fireproof layer wrapped outside the air duct in the field installation process of the air duct.
Description
Technical Field
The invention belongs to the technical field of air ducts, and particularly relates to a segmental prefabricated structural air duct and a construction method.
Background
The technical standards of the three major systems of the fabricated building are released by the Ministry of housing and construction in 2017, requirements are provided for the materials of smoke-proof pipelines in buildings with different earthquake-resistant grades, the multi-storey buildings in the areas with the temperature of 8 ℃ and below 8 ℃ are required by the regulations, galvanized steel plates or steel plates are preferably adopted, and the high-storey buildings and the buildings in the areas with the temperature of 9 ℃ are made of hot galvanized steel plates or steel plates. The national standard building smoke prevention and exhaust system technical standard (GB 51251-2017) implemented in 8.1.2018 proposes specific fire-resistant time requirements and smoke prevention and exhaust pipeline material requirements for smoke prevention and exhaust pipelines. According to the technical standards, management methods and standard requirements, the ventilation and air conditioning and smoke discharge prevention pipeline not only needs to meet the requirements of fire resistance time, but also needs to meet the requirements of pipeline materials and also needs to meet the requirements of earthquake resistance. At present, the common method of the ventilation air conditioner and the smoke exhaust prevention pipeline is to complete the installation of a steel plate air pipe on a construction site, then wrap a heat preservation plate and a fireproof plate outside, and simultaneously, the vertical pipeline needs to be blocked by a concrete partition wall. This scheme construction process is loaded down with trivial details, construction cycle is long, later stage maintenance difficulty, needs civil engineering specialty construction after, just can carry out ventilation air conditioner and prevent the installation of exhaust pipe concurrently to the extravagant serious of material in the work progress, the holistic heat preservation heat-proof quality of tuber pipe and fire behavior can hardly obtain guaranteeing.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a segmental prefabricated heat-preservation heat-insulation type fabricated structure air duct which has the functions of heat preservation, heat insulation, fire resistance, segmental prefabrication and fabricated installation and is used for ventilating and air conditioning and discharging smoke and a construction method.
The technical scheme adopted by the invention for solving the problem is as follows:
the utility model provides a prefabricated heat preservation type fabricated construction wind channel of festival section, it is plugged into the cooperation by a plurality of festival tuber pipe main part sections end to end in proper order and forms, tuber pipe main part section is including the stainless steel inside lining that is used for forming tuber pipe main part frame, the cladding at the heat preservation insulating layer of stainless steel inside lining outer peripheral face and the cladding at the structural layer of heat preservation insulating layer outer peripheral face, connects through the overlap joint structural connection between the adjacent tuber pipe main part section.
Preferably, the inner wall of the stainless steel lining is smooth, and the heat insulation layer is a foamed cement board.
Further preferably, the heat insulation layer is fixed on the outer surface of the stainless steel lining through an epoxy resin glue layer.
Preferably, the structural layer is a concrete structure, and is fixed on the outer peripheral surface of the heat insulation layer by wrapping the bonding mortar layer.
Further preferably, the lap joint structure comprises an external expansion joint fixed on one side of the stainless steel lining, and the external expansion joint is in lap joint with the stainless steel lining of the other air duct main body section through self-tapping screws.
Preferably, the external expansion joint is a stainless steel plate, and the self-tapping screw is made of an angle steel material.
Further preferably, the fixed end of the external expansion joint is fixed on the inner wall of one side of the stainless steel lining, and the free end of the external expansion joint extends towards the direction far away from the stainless steel lining and is parallel to the stainless steel lining.
Preferably, the free end of the external expansion joint is in edge pressing lap joint with the stainless steel lining of the other air duct main body section through a self-tapping screw, and the outer surface of the free end of the external expansion joint is attached to the stainless steel lining of the other air duct main body section.
Preferably, the lap joint structure further comprises a plugging structure arranged on the outer peripheral surface of the outer expansion joint, and the plugging structure is flush with the outer surface of the structural layer.
Further preferably, the blocking structure is a concrete sealing glue for blocking the joint of the concrete structure.
The second object of the present invention is to: the construction method of the segmental prefabricated heat-preservation and heat-insulation type fabricated structure air duct comprises the following steps:
the method comprises the following steps: prefabricating the main body section of the air pipe according to design requirements in a prefabrication field;
step two: the air duct main body section consists of a stainless steel lining, a heat preservation and insulation layer coated on the peripheral surface of the stainless steel lining and a structural layer coated on the peripheral surface of the heat preservation and insulation layer;
step three: in the process of air duct field installation, a plurality of air duct main body sections are sequentially connected in an end-to-end connection fit manner through a lap joint structure;
step four: and (3) plugging concrete sealing glue at the joint of the concrete structure to form a complete segmental prefabricated heat-insulation fabricated structure air duct.
The invention has the advantages and positive effects that: according to the invention, the stainless steel lining, the heat-insulating material and the concrete structure are integrated to form the segmental prefabricated heat-insulating fabricated structure air duct which simultaneously meets the requirements of a ventilation air conditioner and smoke prevention and discharge, meets the requirements of the ventilation air conditioner and smoke prevention and discharge air duct on heat-insulating property, fireproof property and fabricated installation property, can effectively solve the problems of multiple air duct installation procedures, long installation period, large occupied underground space, poor durability, inconvenience in maintenance and the like, and also avoids the problem of damage to the air duct wrapped with the heat-insulating layer and the fireproof layer in the air duct field installation process.
Drawings
The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a schematic view of a segment prefabricated heat-insulating fabricated structural duct of the present invention;
FIG. 2 is a schematic cross-sectional view of a section of a prefabricated heat-insulating fabricated structural air duct according to the present invention after connection;
in the figure:
1. stainless steel lining 2, heat preservation and insulation layer 3, structural layer 4 and epoxy resin adhesive layer
5. Bonding mortar layer 6, external expansion joint 7, self-tapping screw 8 and plugging structure
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be specifically described below by way of example, but all the descriptions are for illustrative purposes only and should not be construed as limiting the present invention in any way. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations. The present invention will be described in detail with reference to the accompanying drawings.
Example 1:
the utility model provides a prefabricated heat preservation type fabricated construction wind channel of festival section, it is plugged into the cooperation by a plurality of festival tuber pipe main part sections end to end in proper order and forms, tuber pipe main part section is including the stainless steel inside lining 1 that is used for forming tuber pipe main part frame, the cladding at the heat preservation insulating layer 2 of 1 outer peripheral face of stainless steel inside lining and the cladding at the structural layer 3 of 2 outer peripheral faces of heat preservation insulating layer, through overlap joint structural connection between the adjacent tuber pipe main part section.
In this embodiment, as shown in fig. 1-2, a plurality of air-saving duct main body sections are sequentially connected end to form a complete structural air duct, and the air-saving duct main body section includes a stainless steel lining 1, a thermal insulation layer 2 and a structural layer 3, and has the advantages of being integrally formed, synchronously implemented, convenient to install, durable, free of maintenance, space-saving, attractive and practical, and the like. Simultaneously, connect through the overlap joint structure between the adjacent tuber pipe main part section, the advantage of make full use of assembled product through integrating stainless steel inside lining, heat preservation thermal insulation material and concrete structure into the prefabricated heat preservation type of thermal-insulated assembled structure wind channel of segment, has solved that tuber pipe installation procedure is many, installation cycle is long, occupy that underground space is big, the durability is poor, the inconvenient scheduling problem of maintenance.
The tuber pipe main part section is with the stainless steel inside lining, thermal insulation material and concrete structure integrate, can constitute one kind and satisfy the prefabricated thermal-insulated type fabricated construction wind channel of festival section that ventilation air conditioner and prevent the requirement of discharging fume simultaneously through the assembly, this structure wind channel adopts the prefabricated mode of festival section, the fabricated installation, simultaneously have heat preservation, it is thermal-insulated, functions such as fire prevention, satisfy ventilation air conditioner and prevent the tuber pipe thermal insulation performance of discharging fume concurrently, fire behavior and fabricated installation performance's requirement, it is many to effectively solve tuber pipe installation procedure, the installation cycle length, it is big to occupy the underground space, the durability is poor, the inconvenient scheduling problem of maintenance, also avoided in the on-the-spot installation of tuber pipe to tuber pipe outsourcing heat preservation, the destruction problem of flame retardant coating wholeness ability.
Furthermore, still consider in this embodiment, the inner wall of stainless steel inside lining 1 is smooth, and stainless steel inside lining 1 can select for use the stainless steel sheet of unnecessary wall thickness to make different sizes according to the on-the-spot requirement, the section of stainless steel inside lining 1 is rectangle, circular or oval or other geometric figure, can satisfy the requirement of ventilation air conditioner and prevent exhaust fume tuber pipe heat preservation heat-proof quality, fire behavior and assembled installation performance.
Furthermore, it can be considered in this embodiment that the thermal insulation layer 2 is a foamed cement board, the thermal insulation layer 2 is fixed on the outer surface of the stainless steel lining 1 through an epoxy resin glue layer 4, the material of the thermal insulation layer 2 is a commercially available thermal insulation material product such as a foamed cement board, and the thickness of the thermal insulation layer 2 is determined according to the thermal insulation performance and the thermal insulation requirement.
Furthermore, it can be considered in this embodiment that the structural layer 3 is of a concrete structure, the structural layer 3 is externally wrapped and fixed on the outer peripheral surface of the thermal insulation layer 2 through the adhesive mortar layer 5, and the structural layer 3 should meet the requirement of designing the fire-resistant time and ensure the requirement of the whole fire-resistant time of the segment prefabricated thermal insulation type fabricated structure air duct.
Furthermore, it can be considered in this embodiment that the overlapping structure includes an external expansion joint 6 fixed on one side of the stainless steel lining 1, and the external expansion joint 6 is in press-fit connection with the stainless steel lining 1 of another air duct main body section by a self-tapping screw 7. The two air pipe main body sections are named as a pipe section A and a pipe section B respectively, and the pipe section A and the pipe section B are connected through an external expansion joint 6 of the stainless steel lining 1, namely the pipe section A and the pipe section B are in edge pressing lap joint.
Further, it is also considered in this embodiment that the external expansion joint 6 is a stainless steel plate, and the self-tapping screw 7 is an angle steel material.
Further, it is also contemplated in this embodiment that, as shown in fig. 2, the fixed end of the outer expansion joint 6 is fixed on one side of the inner wall of the stainless steel liner 1, but it is not limited to the fixing manner by welding, and the free end of the outer expansion joint 6 extends away from the stainless steel liner 1 and is parallel to the stainless steel liner 1.
Furthermore, it can be considered in this embodiment that, as shown in fig. 2, an inner circumferential surface of a free end of the outward expansion joint 6 is in edge-pressing lap joint with the stainless steel lining 1 of the next segment and the stainless steel lining 1 of the other air duct main segment through a self-tapping screw 7, and an outer surface of the free end of the outward expansion joint 6 is attached to the stainless steel lining 1 of the other air duct main segment, so as to ensure the connection stability and connection tightness between the two adjacent air duct main segments.
Example 2:
For example: the external expansion joint 6 is an integral plate or a sectional plate. When expanding node 6 when whole panel outward, it is closed structure, and its section shape is similar with the section shape of stainless steel inside lining 1 and the size is slightly littleer for connect two adjacent tuber pipe main part sections, guarantee the stability of connecting between two adjacent tuber pipe main part sections and the seal of connection, guarantee then to connect the holistic fire resistance in back wind channel. When the external expansion joint 6 is a sectional plate, the external expansion joint 6 is a plurality of stainless steel plates distributed between the main body sections of the two air ducts.
Furthermore, it can be considered in embodiment 1 or 2 that the overlapping structure further includes a blocking structure 8 disposed on the outer peripheral surface of the outward expansion joint 6, and the blocking structure 8 is flush with the outer surface of the structural layer 3, so as to ensure the aesthetic appearance of the structural air duct.
Furthermore, it can be considered in embodiment 1 or 2 that the blocking structure 8 is a concrete sealing adhesive for blocking a joint of a concrete structure, that is, the joint of the concrete structure at the joint of the edge pressing is blocked by the concrete sealing adhesive, the outward expansion joint 6 is connected with the stainless steel lining of the next segment by a self-tapping screw 7, so as to ensure the overall fire resistance of the connected air duct, and the air duct should have integrity after the fabrication of each part of the segment prefabricated heat-insulation fabricated structural air duct is completed.
Example 3:
a construction method of a segment prefabricated heat-preservation heat-insulation type fabricated structure air duct comprises the following steps:
the method comprises the following steps: prefabricating the main body section of the air pipe according to design requirements in a prefabrication field;
step two: the air duct main body section consists of a stainless steel lining 1, a heat preservation and insulation layer 2 coated on the peripheral surface of the stainless steel lining 1 and a structural layer 3 coated on the peripheral surface of the heat preservation and insulation layer 2;
step three: in the process of air duct field installation, a plurality of air duct main body sections are sequentially connected in an end-to-end connection fit manner through a lap joint structure;
step four: the concrete sealing glue is sealed at the joint of the concrete structure, a complete segmental prefabricated heat-preservation heat-insulation type fabricated structure air duct is formed, a segmental prefabrication mode is adopted, fabricated installation is achieved, the functions of heat preservation, heat insulation, fire prevention and the like are achieved, the requirements of a ventilation air conditioner and a smoke-discharge-prevention air duct on heat preservation and heat insulation performance are met, the requirements of fire resistance and fabricated installation performance are met, the problems that air ducts are multiple in installation procedures, the installation period is long, occupied underground space is large, durability is poor, maintenance is inconvenient and the like can be effectively solved, and the problem of damage to the air duct outer wrapped heat preservation layer and the fire-proof layer overall performance in the air duct field installation process is also solved.
In conclusion, the invention integrates the stainless steel lining, the heat-insulating material and the concrete structure to form the segmental prefabricated heat-insulating fabricated structure air duct which simultaneously meets the requirements of ventilation air conditioning and smoke prevention and discharge, meets the requirements of the ventilation air conditioning and smoke prevention and discharge air duct on heat-insulating property, fireproof property and fabricated installation property, can effectively solve the problems of complicated field construction process, long construction period and difficult later maintenance of the ventilation air conditioning and smoke prevention and discharge air duct, and also avoids the problem of damage to the integral property of the heat-insulating layer and the fireproof layer wrapped outside the air duct in the field installation process of the air duct. The requirements on the heat preservation performance and the fireproof performance of the air pipe are met, and the problems that the construction process of heat preservation and insulation materials and fireproof materials is complicated, the construction period is long, the maintenance is difficult and the like are solved. Meanwhile, the material waste and the damage of different procedures to the integrity of the air pipe in the installation process of the air pipe in a construction site are avoided.
It should be noted that the protection scope of the present invention is not limited to the above specific examples, and the object of the present invention can be achieved by substantially the same structure according to the basic technical concept of the present invention, and embodiments that can be imagined by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a prefabricated thermal-insulated type fabricated construction wind channel that keeps warm of segmentation which characterized in that: it is plugged into the cooperation by a plurality of throttle tuber pipe main part sections head and tail in proper order and forms, tuber pipe main part section is including stainless steel inside lining (1) that is used for forming tuber pipe main part frame, cladding heat preservation insulating layer (2) and cladding at heat preservation insulating layer (2) outer peripheral face at stainless steel inside lining (1) outer peripheral face structural layer (3), connects through the overlap joint structure between the adjacent tuber pipe main part section.
2. The segment prefabricated heat-insulating and heat-insulating fabricated structural air duct of claim 1, wherein: the inner wall of the stainless steel lining (1) is smooth, and the heat insulation layer (2) is a foamed cement board.
3. The segmental prefabricated heat-preservation and heat-insulation fabricated structural air duct of claim 2, wherein: the heat insulation layer (2) is fixed on the outer surface of the stainless steel lining (1) through an epoxy resin adhesive layer (4).
4. The segment prefabricated heat-insulating and heat-insulating fabricated structural air duct of claim 3, wherein: the structural layer (3) is of a concrete structure, and the structural layer (3) is fixed on the outer peripheral surface of the heat insulation layer (2) in a wrapping mode through the bonding mortar layer (5).
5. The segmental prefabricated heat-preservation and heat-insulation fabricated structural air duct of claim 4, wherein: the overlap joint structure is including fixing outer node (6) that expands in one side of stainless steel inside lining (1), outer node (6) expand through self tapping screw (7) and stainless steel inside lining (1) blank pressing overlap joint of another festival tuber pipe main part section.
6. The segmental prefabricated heat-preservation and heat-insulation fabricated structural air duct of claim 5, wherein: the external expansion joint (6) is a stainless steel plate.
7. The segment prefabricated heat-insulating and heat-insulating fabricated structural air duct of claim 6, wherein: the stiff end of outer node (6) that expands is fixed on one side inner wall of stainless steel inside lining (1), the free end of outer node (6) that expands extends and is parallel to each other with stainless steel inside lining (1) towards keeping away from stainless steel inside lining (1) direction.
8. The segment prefabricated heat-insulating and heat-insulating fabricated structural air duct of claim 7, wherein: the free end of the external expansion joint (6) is in blank pressing lap joint with the stainless steel lining (1) of the other air duct main body section through a self-tapping screw (7), and the outer surface of the free end of the external expansion joint (6) is attached to the stainless steel lining (1) of the other air duct main body section.
9. The segmental prefabricated heat-preservation and heat-insulation fabricated structural air duct of claim 8, wherein: the lap joint structure further comprises a plugging structure (8) arranged on the outer peripheral surface of the outer expansion joint (6), and the plugging structure (8) is flush with the outer surface of the structural layer (3).
10. The construction method of the segmental prefabricated heat-preservation and heat-insulation type fabricated structural air duct according to any one of claims 1 to 9, characterized by comprising the following steps of: the method comprises the following steps:
the method comprises the following steps: prefabricating the main body section of the air pipe according to design requirements in a prefabrication field;
step two: the air duct main body section consists of a stainless steel lining (1), a heat preservation and insulation layer (2) coated on the peripheral surface of the stainless steel lining (1) and a structural layer (3) coated on the peripheral surface of the heat preservation and insulation layer (2);
step three: in the process of air duct field installation, a plurality of air duct main body sections are sequentially connected in an end-to-end connection fit manner through a lap joint structure;
step four: and (3) plugging concrete sealing glue at the joint of the concrete structure to form a complete segmental prefabricated heat-insulation fabricated structure air duct.
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| CN202210140788.0A CN114278050A (en) | 2022-02-16 | 2022-02-16 | Segmental prefabricated heat-preservation and heat-insulation type fabricated structure air duct and construction method thereof |
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| CN202210140788.0A CN114278050A (en) | 2022-02-16 | 2022-02-16 | Segmental prefabricated heat-preservation and heat-insulation type fabricated structure air duct and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962858A (en) * | 2022-06-23 | 2022-08-30 | 中亿丰建设集团股份有限公司 | Construction method for wrapping fireproof plate outside air duct |
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- 2022-02-16 CN CN202210140788.0A patent/CN114278050A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962858A (en) * | 2022-06-23 | 2022-08-30 | 中亿丰建设集团股份有限公司 | Construction method for wrapping fireproof plate outside air duct |
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