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Segmental prefabricated heat preservation and insulation type fabricated structure air duct and construction method thereof

A technology of thermal insulation and thermal insulation layer, applied in the field of air ducts, can solve the problems of difficult maintenance in the later stage, cumbersome construction procedures, long construction period, etc.

Pending Publication Date: 2022-04-05
CHINA RAILWAY DESIGN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction process of this scheme is cumbersome, the construction period is long, and the later maintenance is difficult. It is necessary to install the ventilation, air conditioning and smoke exhaust pipes after the professional civil engineering construction is completed. In addition, the waste of materials during the construction process is serious. The overall thermal insulation performance of the air ducts and Fire performance is difficult to guarantee

Method used

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  • Segmental prefabricated heat preservation and insulation type fabricated structure air duct and construction method thereof
  • Segmental prefabricated heat preservation and insulation type fabricated structure air duct and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A segmental prefabricated thermal insulation type assembled structural air duct, which is formed by connecting and matching the main sections of several air ducts sequentially. The main sections of the air duct include a stainless steel lining 1 for forming the main frame of the air duct 1. The thermal insulation layer 2 coated on the outer peripheral surface of the stainless steel lining 1 and the structural layer 3 coated on the outer peripheral surface of the thermal insulation layer 2, and the adjacent air duct main sections are connected by a lap joint structure.

[0031] In this example, if Figure 1-2 As shown, the main sections of several air ducts are connected end to end in turn to form a complete structural air duct. The main section of the air duct includes stainless steel lining 1, thermal insulation layer 2 and structural layer 3, which has the characteristics of integral molding, simultaneous implementation, and easy installation. , Durable, maintenance-f...

Embodiment 2

[0041] Embodiment 2 of the present invention is further improved on the basis of Embodiment 1, so as to fully exert the technical advantages of the present invention, which will be illustrated below.

[0042] For example: the expansion node 6 is an integral board or a segmented board. When the expansion node 6 is an integral plate, it is a closed structure, and its cross-sectional shape is similar to that of the stainless steel lining 1 and its size is slightly smaller. It is used to connect the main sections of two adjacent air ducts to ensure that the adjacent The stability of the connection between the main sections of the two air ducts and the airtightness of the connection ensure the overall fire resistance of the air duct after the connection. When the expansion node 6 is a segmented plate, the expansion node 6 is a plurality of stainless steel plates distributed between the main sections of the two air ducts.

[0043] Furthermore, it can also be considered in Embodimen...

Embodiment 3

[0046] A construction method for segmental prefabricated thermal insulation type assembled structural air duct, comprising the following steps:

[0047] Step 1: Prefabricate the main section of the air duct in the prefabrication yard according to the design requirements;

[0048] Step 2: The main section of the air duct is composed of a stainless steel lining 1, a thermal insulation layer 2 coated on the outer peripheral surface of the stainless steel inner lining 1, and a structural layer 3 coated on the outer peripheral surface of the thermal insulation layer 2;

[0049] Step 3: During the on-site installation of the air duct, the main sections of several air ducts are sequentially connected through the end-to-end connection of the overlapping structure;

[0050] Step 4: Seal the concrete sealant at the joints of the concrete structure to form a complete segmental prefabricated thermal insulation type prefabricated structural air duct, which adopts segmental prefabrication a...

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Abstract

The invention belongs to the technical field of air ducts, and particularly relates to a segment prefabricated assembly type structure air duct and a construction method. The segment prefabricated assembly type structure air duct is formed by sequentially connecting and matching a plurality of air pipe main body segments end to end; each air pipe main body section comprises a stainless steel lining used for forming an air pipe main body frame, a heat preservation and insulation layer wrapping the peripheral face of the stainless steel lining and a structural layer wrapping the peripheral face of the heat preservation and insulation layer, and the adjacent air pipe main body sections are connected through lap joint structures. According to the invention, the requirements of ventilation, air conditioning and smoke prevention and exhaust are simultaneously met, the requirements of thermal insulation performance, fireproof performance and assembly type installation performance are met, and the problems of many air pipe installation procedures, long installation period, large occupied underground space, poor durability, inconvenience in maintenance and the like can be effectively solved; and the problem of damage to the overall performance of a heat preservation layer and a fireproof layer wrapped outside the air pipe in the field installation process of the air pipe is also avoided.

Description

technical field [0001] The invention belongs to the technical field of air ducts, in particular to a segmental prefabricated structural air duct and a construction method. Background technique [0002] In January 2017, the Ministry of Housing and Urban-Rural Development issued the technical standards for the three major systems of prefabricated buildings, which put forward requirements for the materials of the smoke exhaust pipes in buildings with different earthquake resistance levels. Zinc steel plate or steel plate, high-rise buildings and buildings in 9-degree areas should be made of hot-dip galvanized steel plate or steel plate. The national standard "Technical Standards for Smoke Prevention and Smoke Exhaust Systems in Buildings" (GB 51251-2017), which was implemented on August 1, 2018, puts forward specific fire resistance time requirements and material requirements for smoke prevention and exhaust pipes. According to the above-mentioned technical standards, manageme...

Claims

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Application Information

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IPC IPC(8): E04F17/04E04F17/02E04G21/00F24F13/02F16L57/04F16L59/02
Inventor 刘越李爱东张春雷韩平武磊那艳玲刘英杰张建国程茀刘学志
Owner CHINA RAILWAY DESIGN GRP CO LTD
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