Installation method of horizontal air pipe

Abstract

The invention relates to the technical field of constructional engineering, in particular to a horizontal air duct mounting method which comprises the steps that a connecting lead screw is machined, and an L-shaped special hanging piece is prefabricated; the connecting lead screw is fixedly connected to the lower portion of the building structure body; an L-shaped special hanging piece is fixed to the connecting lead screw; splicing to form an air pipe section hoisting unit; the air pipe section hoisting units are fixed to the L-shaped special hanging pieces; the remaining air pipe section hoisting units are correspondingly fixed to the L-shaped special hanging pieces, and all the air pipe section hoisting units are connected together to form a horizontal air pipe; after an air pipe surface heat preservation layer / fireproof layer is formed on the outer surface of the horizontal air pipe, a flange surface heat preservation layer / fireproof layer is formed on the outer surface of the air pipe flange; by means of the installation method, the installation efficiency of the horizontal air pipe can be improved, the use amount of sectional materials for air pipe installation is reduced, the construction difficulty of a heat preservation or fire prevention method is reduced, meanwhile, the height of the space occupied by air pipe system installation is reduced, and the clearance below the air pipe is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a method for installing a horizontal air duct. Background Art

[0002] The common installation method of horizontal air ducts is to use screw rods and cross arms to form a bracket to support the air ducts to be hung in the building. The cross arms can be angle steel, channel steel or other profiles. This method requires the use of a large number of profiles as cross arms, and the processing of cross arms also requires a lot of labor. For air ducts with insulation or fireproofing methods, it is also difficult to install insulation or fireproofing methods at the bracket. The installation of brackets and pads will also occupy the net height of the building. These are all undesirable to those skilled in the art. Summary of the invention

[0003] In view of the above-mentioned problems, the present invention provides a method for installing a horizontal air duct to solve the problem in the prior art that the installation of the horizontal air duct requires the use of a large number of profiles as cross arms, consumes a lot of manpower and is difficult to construct thermal insulation or fire protection.

[0004] A method for installing a horizontal air duct comprises the following steps:

[0005] Step S1, processing a connecting screw rod and prefabricating an L-shaped special hanger according to the installation height of the horizontal air duct, and bolt holes are opened on the horizontal part and the vertical part of the L-shaped special hanger, and the bolt holes on the horizontal part of the L-shaped special hanger are matched with the connecting screw rod, and the bolt holes on the vertical part of the L-shaped special hanger are matched with the lengthened bolts on the air duct flange;

[0006] Step S2, according to the design drawing, the connecting screw is fixedly connected to the bottom of the building structure;

[0007] Step S3, after the L-shaped special hanger is sleeved on the connecting screw rod from the bottom end of the connecting screw rod through the bolt hole on the horizontal part of the L-shaped special hanger, the L-shaped special hanger is fixed on the connecting screw rod by using a screw nut;

[0008] Step S4, pre-assembling to form at least two duct segment hanging units, each of the duct segment hanging units being formed by at least two duct segments connected by duct flanges and bolts, and the flange bolt holes at the hanging points in each of the duct segment hanging units are not bolted;

[0009] Step S5, aligning the flange bolt holes of the duct section hanging unit at the hanging point with the bolt holes on the vertical portion of the L-shaped special hanger, and sequentially passing the flange extension bolts through the bolt holes on the vertical portion of the L-shaped special hanger and the flange bolt holes at the hanging point and then fixing them with locking nuts, so as to fix the duct section hanging unit on the L-shaped special hanger;

[0010] Step S6, repeating step S5 to fix the remaining duct section hanging units to the L-shaped special hanger accordingly, and connecting the duct section hanging units together to form a horizontal duct;

[0011] Step S7, after forming the duct surface insulation layer / fireproof layer on the outer surface of the horizontal duct, forming the flange surface insulation layer / fireproof layer on the outer surface of the duct flange.

[0012] In some of the embodiments, the L-shaped special hanger is made of glass fiber material and has load-bearing, fire-proof and heat-insulating properties.

[0013] In some of the embodiments, each of the air duct sections is a square cylindrical structure.

[0014] In some of the embodiments, a gasket is provided between the screw nut and the horizontal portion of the L-shaped special hanger.

[0015] In some of the embodiments, a gasket is provided between the locking nut and the air duct flange.

[0016] In some of the embodiments, the connecting screw is fixedly connected to the bottom of the building structure by expansion bolts.

[0017] Compared with the prior art, the present invention has at least one of the following advantages or beneficial effects:

[0018] The invention discloses a method for installing a horizontal air duct. The method can improve the installation efficiency of the horizontal air duct, reduce the amount of profiles used in the installation of the air duct, reduce the difficulty of thermal insulation or fire prevention construction, and at the same time reduce the height of the space occupied by the installation of the air duct system and increase the clearance below the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0020] Figure 1 Flow chart of the installation method of the horizontal air duct in the embodiment of the present invention;

[0021] Figure 2 A three-dimensional diagram of the installation structure of the horizontal air duct in an embodiment of the present invention;

[0022] Figure 3 It is a cross-sectional view of the installation structure of the horizontal air duct without the thermal insulation layer / fireproof layer in the embodiment of the present invention;

[0023] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 5 It is a side view of the installation structure of the horizontal air duct in an embodiment of the present invention;

[0025] Figure 6 Schematic diagram of the insulation / fire protection method of the duct flange and the hanging point in the embodiment of the present invention;

[0026] In the figure: 1. Duct section; 2. Connecting screw; 3. Duct flange; 4. L-shaped special hanger; 5. Screw nut; 6. Flange extension bolt; 7. Locking nut; 8. Flange surface insulation layer / fireproof layer. DETAILED DESCRIPTION

[0027] The present invention is further described below with reference to the accompanying drawings and specific embodiments, but is not intended to be limiting of the present invention:

[0028] like Figure 1 The present invention discloses a method for installing a horizontal air duct. Specifically, the method comprises the following steps:

[0029] Step S1, such as Figure 4 As shown, the connecting screw rod 2 is processed according to the installation height of the horizontal air duct and the L-shaped special hanger 4 is prefabricated, and bolt holes are opened on the horizontal part and the vertical part of the L-shaped special hanger 4, and the bolt holes on the horizontal part of the L-shaped special hanger 4 are matched with the connecting screw rod 2, and the bolt holes on the vertical part of the L-shaped special hanger 4 are matched with the extended bolts on the air duct flange 3; and when in use, the horizontal part of the L-shaped special hanger 4 is located above the vertical part.

[0030] Specifically, the L-shaped special hanger 4 is made of glass fiber material, and has load-bearing, fire-proof and heat-insulating properties, and can meet the fire resistance limit requirements and duct insulation requirements. The height of the L-shaped special hanger 4 can be set according to the actual needs of the project. The thickness of the L-shaped special hanger 4 should meet the load-bearing force requirements, and the width of the L-shaped special hanger 4 can be uniformly set to 50mm, and the hanger height is 100mm to protrude the insulation layer or the fire-proof layer.

[0031] Step S2, according to the design drawings, the connecting screw rod 2 is fixedly connected to the bottom of the building structure by expansion bolts, and the fixed position and quantity of the connecting screw rod 2 are arranged according to the lifting points in the design drawings. It should be noted here that the connecting screw rod 2 and expansion bolts should be selected according to the specifications and design requirements to meet the load-bearing requirements.

[0032] Step S3, after the L-shaped special hanger 4 is sleeved on the connecting screw rod 2 from the bottom end of the connecting screw rod 2 through the bolt hole on the horizontal part of the L-shaped special hanger 4, the L-shaped special hanger 4 is fixed on the connecting screw rod 2 by using the screw nut 5; and a gasket (not shown in the figure) is arranged between the screw nut 5 and the horizontal part of the L-shaped special hanger 4, such as Figure 3 and 4 shown.

[0033] Step S4, pre-assemble at least two duct segment hanging units, each of which is composed of at least two duct segments 1 connected by duct flanges 3 and bolts, and the flange bolt holes at the hanging points in each duct segment hanging unit are not bolted to facilitate the subsequent threading of flange extension bolts; specifically, each duct segment 1 is a square cylindrical structure, and a duct flange 3 protruding from the surface of the duct segment 1 is fixed to the connecting end of the duct segment 1.

[0034] It should be noted here that the duct flange 3 located at the lifting point should, on the basis of meeting the design and specifications, appropriately enlarge the flange profile specifications to meet the load-bearing requirements.

[0035] Step S5, align the flange bolt holes of the duct section hanging unit at the hanging point with the bolt holes on the vertical part of the L-shaped special hanger 4, and sequentially pass the flange extension bolts 6 through the bolt holes on the vertical part of the L-shaped special hanger 4 and the flange bolt holes of the two duct flanges at the hanging point, and then fix them with the locking nuts 7, so as to fix the duct section hanging unit on the L-shaped special hanger 4; a gasket is provided between the locking nut 7 and the duct flange 3; Figure 2 , 4 and 6.

[0036] The specifications of the above-mentioned flange extension bolts 6 should meet the load-bearing requirements, and the length should be determined according to the duct flange 3, the thickness of the flange gasket, the thickness of the locking nut 7, and the allowable exposed thread length. The locking nut 7 and gasket used to lock the flange extension bolts 6 should match the extension bolts.

[0037] Step S6, repeating step S5, to fix the remaining duct section hanging units correspondingly on the L-shaped special hanger 4, and connecting the duct section hanging units together to form a horizontal duct; Figure 2 shown.

[0038] Step S7, after forming a duct surface insulation layer / fireproof layer (not shown) on the outer surface of the horizontal duct, forming a flange surface insulation layer / fireproof layer 8 on the outer surface of the duct flange 3; Figure 2 , 5 and the structure shown in 6 (the insulation layer / fireproof layer on the surface of the duct is not shown in the figure); only separate treatment is required at the duct flange 3, and the duct is installed without a cross arm. Compared with the conventional installation method, the separate treatment of the insulation layer / fireproof layer at the cross arm of the duct is reduced.

[0039] In summary, the present invention discloses a method for installing a horizontal air duct, in which a screw rod is connected to the air duct flange through an L-shaped special hanger to achieve the purpose of suspending the air duct in a building space. The installation method can improve the installation efficiency of the horizontal air duct and reduce the amount of profiles used in the installation of the air duct; and after the installation of the air duct is completed, insulation or fireproof wrapping is performed. Since there is no crossbeam on the lower surface of the air duct, the insulation or fireproof wrapping can be directly laid flat for installation, thereby reducing the construction difficulty of the insulation or fireproofing method.

[0040] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0041] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A method for installing a horizontal air duct, characterized in that: The steps include: Step S1, processing a connecting screw rod and prefabricating an L-shaped special hanger according to the installation height of the horizontal air duct, and bolt holes are opened on the horizontal part and the vertical part of the L-shaped special hanger, and the bolt holes on the horizontal part of the L-shaped special hanger are matched with the connecting screw rod, and the bolt holes on the vertical part of the L-shaped special hanger are matched with the lengthened bolts on the air duct flange; Step S2, according to the design drawing, the connecting screw is fixedly connected to the bottom of the building structure; Step S3, after the L-shaped special hanger is sleeved on the connecting screw rod from the bottom end of the connecting screw rod through the bolt hole on the horizontal part of the L-shaped special hanger, the L-shaped special hanger is fixed on the connecting screw rod by using a screw nut; Step S4, pre-assembling to form at least two duct segment hanging units, each of the duct segment hanging units being formed by at least two duct segments connected by duct flanges and bolts, and the flange bolt holes at the hanging points in each of the duct segment hanging units are not bolted; Step S5, aligning the flange bolt holes of the duct section hanging unit at the hanging point with the bolt holes on the vertical portion of the L-shaped special hanger, and sequentially passing the flange extension bolts through the bolt holes on the vertical portion of the L-shaped special hanger and the flange bolt holes at the hanging point and then fixing them with locking nuts, so as to fix the duct section hanging unit on the L-shaped special hanger; Step S6, repeating step S5 to fix the remaining duct section hanging units to the L-shaped special hanger accordingly, and connecting the duct section hanging units together to form a horizontal duct; Step S7, after forming the duct surface insulation layer / fireproof layer on the outer surface of the horizontal duct, forming the flange surface insulation layer / fireproof layer on the outer surface of the duct flange.

2. The method for installing a horizontal air duct according to claim 1, characterized in that: The L-shaped special hanging piece is made of glass fiber material.

3. The method for installing a horizontal air duct according to claim 1, characterized in that: Each of the air duct sections is a square cylinder structure.

4. The method for installing a horizontal air duct according to claim 1, characterized in that: A gasket is arranged between the screw nut and the horizontal portion of the L-shaped special hanging piece.

5. The method for installing a horizontal air duct according to claim 1, characterized in that: A gasket is arranged between the locking nut and the air duct flange.

6. The method for installing a horizontal air duct according to claim 1, characterized in that: The connecting screw rod is fixedly connected to the bottom of the building structure through expansion bolts.

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