Non-combustible fiber tire body metal film coated lining air duct with prefabricated non-dismantling formwork

Abstract

The invention discloses a non-combustible fiber tire body metal film coated lining air duct with a prefabricated non-dismantling formwork. The non-combustible fiber tire body metal film coated liningair duct includes a wall body, and further comprises a lining air duct body; the wall body is internally provided with a wall body reinforcing steel bar, the lining air duct body includes the non-dismantling formwork, the outer side of the non-dismantling formwork is connected to the wall body reinforcing steel bar through a connecting member, a non-combustible fiber tire body is pasted to the inner side of the non-dismantling formwork, and a metal film face layer is arranged on the surface of the non-combustible fiber tire body; and the outer side of the non-dismantling formwork and the wallbody reinforcing steel bar are welded and connected through the connecting member, the non-combustible fiber tire body is made of non-combustible fiber cloth, the metal film face layer is made of an aluminum coated film, the non-dismantling formwork adopts tongue-and-groove connection, a metal film joint and a non-combustible fiber tire body joint are pasted and sealed on the inner side of the airduct with the same material (a metal coated film or the non-combustible fiber tire body). The non-combustible fiber tire body metal film coated lining air duct can greatly reduce the construction difficulty, reduce the construction cost, does not need to reserve the installation space, and avoids the air leakage phenomenon of the civil construction wind well and increases the ventilation amount.

Description

technical field [0001] The invention relates to the technical field of pressurized air supply ducts and smoke exhaust ducts for building buildings, in particular to a non-combustible fiber matrix-coated metal film-lined air duct with a prefabricated formwork that does not need to be disassembled. Background technique [0002] In the HVAC profession, the vertical air duct used to supply and exhaust air (smoke) generally adopts civil air wells, and the installation of metal (or other non-combustible composite material) air ducts in the civil wells is also adopted by the HVAC profession. Strictly speaking, it is not very commonly used, because its installation is more difficult, the cost is higher than that of civil wind shafts, and it occupies a large area on the building plane, so the projects using this method in the past are mainly concentrated in high-standard public buildings In the project, it is mainly used to transport air-conditioning air after temperature and humidit...

AI Technical Summary

Problems solved by technology

[0002] In the HVAC profession, the vertical air duct used to supply and exhaust air (smoke) generally adopts civil air wells, and the installation of metal (or other non-combustible composite material) air ducts in the civil wells is also adopted by the HVAC profession. Strictly speaking, it is not very commonly used, because its installation is more difficult, the cost is higher than that of civil wind shafts, and it occupies a large area on the building plane, so the projects using this method in the past are mainly concentrated in high-standard public buildings In the project, it is mainly used to transport air-conditioning air after over-temperature and humidity treatment (to avoid cold bridges, condensation and air leakage in civil air shafts)

However, with the implementation of the new "Technical Standards for Smoke Prevention and Smoke Exhaust Systems in Buildings" GB51251-2017 on August 1, 2018, the smoke prevention and exhaust pipes of all projects should adopt the method of setting air ducts in civil wells according to the requirements of the code. method, the air duct is required to be made of non-combustible materials, and the inner wall is smooth, so the situation of setting metal and non-metal air ducts in civil wells will increase significantly in the future; the construction of lining air ducts in civil air wells is difficult for high-rise buildings, because for For high-rise buildings, stairwells and front rooms are the key parts of escape, but the stairwells lack horizontal support in structure, resulting in most of the walls being reinforced concrete walls (ie shear walls). There are generally shear walls at the location of the well, and some may have two or even three shear walls, which will greatly increase the installation space and construction difficulty that need to be reserved for the installation of metal air ducts

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