Integrated structure of smoke prevention and exhaust air pipe and cast-in-place reinforced concrete wall

Abstract

The utility model belongs to the technical field of smoke prevention and exhaust air pipe installation, and particularly relates to a smoke prevention and exhaust air pipe and cast-in-place reinforced concrete wall integrated structure which comprises a smoke prevention and exhaust air pipe body, and a cast-in-place reinforced concrete wall body is installed outside the smoke prevention and exhaust air pipe body. The cast-in-place reinforced concrete wall body comprises a steel bar layer on the inner side and a cast-in-place concrete wall layer on the outer side, and the two ends of the smoke prevention and exhaust air pipe body are welded to the steel bar layer. The smoke prevention and exhaust air duct body is directly placed in the civil air shaft to serve as an inner formwork of a cast-in-place reinforced concrete wall, and then the cast-in-place reinforced concrete wall body is poured on the outer side of the smoke prevention and exhaust air duct body, so that the construction and installation space is saved, the smoke prevention and exhaust civil air duct area is reduced, and the ordinary actual use area of a building is increased; and the smoke prevention and exhaust air pipe main body and the cast-in-place reinforced concrete wall on the outer layer are integrated, so that noise can be reduced when the air pipe supplies air or exhausts smoke in a pressurized manner.

Description

Technical Field

[0001] The utility model relates to the technical field of installation of smoke prevention and exhaust air ducts, in particular to an integrated structure of a smoke prevention and exhaust air duct and a cast-in-place reinforced concrete wall. Background Technique

[0002] The method of lining an air duct with a civil air duct is described in Chapter 4 of the national standard atlas "Review and Installation of Smoke Prevention, Exhaust and HVAC Fire Protection Design" 20K607. For the installation requirements of steel sheet air ducts in civil air ducts, the well wall of the civil air duct where the steel sheet air duct is laid should preferably follow the principle of installing the metal air duct first and then building the civil air duct wall. Try to avoid installing the metal air duct in a civil air duct with cast-in-place reinforced concrete walls on multiple sides. When the metal air duct is installed in a civil air duct with a single-sided cast-in-place reinforced concrete wall and the long side of the metal air duct is less than 1000mm, it is required to reserve a construction and installation space of 200mm between the cast-in-place reinforced concrete wall and the metal air duct. When the long side of the air duct is greater than or equal to 1000mm, a 450mm access installation space needs to be reserved on one side of the cast-in-place reinforced concrete wall. When the civil air duct has cast-in-place reinforced concrete walls on multiple sides, the installation space requirement is greater. This also requires that the smoke prevention and exhaust civil air ducts set in the building should preferably have as few cast-in-place reinforced concrete walls around as possible.

[0003] However, most of the high-rise and super high-rise buildings designed and constructed in our daily life adopt the reinforced concrete shear wall structure, and it is very difficult to meet the requirement that there are no cast-in-place reinforced concrete walls around the smoke prevention and exhaust air ducts, and only as few as possible can be achieved. This results in a very large area of the smoke prevention and exhaust civil air ducts in the building, greatly occupying the normal use space in the building and reducing the actual use efficiency of the building. Content of the Utility Model

[0004] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background technique.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows: The integrated structure of the smoke exhaust and supply air duct and the cast-in-place reinforced concrete wall of the utility model includes a main body of the smoke exhaust and supply air duct. An outer main body of the cast-in-place reinforced concrete wall is installed on the outside of the main body of the smoke exhaust and supply air duct. The main body of the cast-in-place reinforced concrete wall includes a reinforcing layer on the inner side and a cast-in-place concrete wall layer on the outer side. The two ends of the main body of the smoke exhaust and supply air duct are welded to the reinforcing layer. Welding the main body of the smoke exhaust and supply air duct to the reinforcing layer does not require additional fixing components, reducing costs. Welding grooves are respectively opened at the upper and lower ends of the main body of the smoke exhaust and supply air duct. The main bodies of the smoke exhaust and supply air duct are vertically connected in sequence by welding. An internal support is installed inside the main body of the smoke exhaust and supply air duct. An air outlet is opened on the side wall of the main body of the smoke exhaust and supply air duct. A connecting pipe is fixedly connected inside the air outlet. The connecting pipe passes through the main body of the cast-in-place reinforced concrete wall. During installation, the main body of the smoke exhaust and supply air duct is directly placed in the civil air shaft to act as the inner formwork of the cast-in-place reinforced concrete wall. Subsequently, the main body of the cast-in-place reinforced concrete wall is poured on the outside of the main body of the smoke exhaust and supply air duct, thereby saving construction and installation space, reducing the area of the smoke exhaust and supply air civil air duct, increasing the actual usable area of the building during normal times, and the integration of the main body of the smoke exhaust and supply air duct and the outer cast-in-place reinforced concrete wall can reduce noise when the air duct is pressurized for air supply or smoke exhaust. This device synchronizes the construction of the cast-in-place reinforced concrete air shaft and the inner lining air duct, avoiding cross-operation of different trades and accelerating the construction progress.

[0006] Preferably, the single installation height of the main body of the smoke exhaust and supply air duct is the same as the construction height of the main body of the cast-in-place reinforced concrete wall. The main body of the smoke exhaust and supply air duct and the main body of the cast-in-place reinforced concrete wall are gradually vertically superimposed for construction, saving construction and installation space.

[0007] Preferably, the main body of the smoke exhaust and supply air duct is made of a steel plate with a thickness of greater than or equal to 1.5 mm.

[0008] Preferably, the connecting pipe is connected to the pressurized air supply pipe or the smoke exhaust pipe for pressurized air supply or smoke exhaust.

[0009] Preferably, the height of the internal support is longer than that of the main body of the smoke exhaust and supply air duct, and the internal support matches the inner diameter size of the main body of the smoke exhaust and supply air duct to support the main body of the smoke exhaust and supply air duct.

[0010] Preferably, a limiting layer is fixedly connected to the lower part of the inner wall of the main body of the smoke exhaust and supply air duct. During pouring, the internal support is placed inside the main body of the smoke exhaust and supply air duct, and the internal support is blocked by the limiting layer for limiting to prevent it from falling into the lower air duct, so that the internal support supports the main body of the smoke exhaust and supply air duct, avoiding the main body of the smoke exhaust and supply air duct from being crushed during concrete pouring. When the strength of the concrete meets the requirements, the internal support can be taken out and reused.

[0011] Preferably, the internal support is made of a wooden square or a precast metal support member.

[0012] Preferably, a rain-proof component is installed on the uppermost smoke exhaust and supply air duct main body. The rain-proof component includes an umbrella cap, which is welded to the uppermost smoke exhaust and supply air duct main body. The flue gas inside the smoke exhaust and supply air duct main body is discharged through a rain-proof pipe. The cooperation of the umbrella cap and the rain-proof pipe avoids the entry of rainwater.

[0013] Preferably, rain-proof pipes with downward-sloping openings are fixedly connected to both sides of the umbrella cap respectively.

[0014] Preferably, a triangular diversion layer is fixedly connected inside the umbrella cap. The diversion layer is made of sound-absorbing material. The diversion layer faces the airflow direction inside the smoke exhaust and supply air duct main body, which can guide the airflow to flow obliquely, reduce wind resistance, and absorb a certain amount of noise at the same time.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. By directly placing the smoke exhaust and supply air duct main body in the civil air shaft to act as the inner formwork of the cast-in-place reinforced concrete wall, and then pouring the cast-in-place reinforced concrete wall main body outside the smoke exhaust and supply air duct main body, the present utility model saves the construction and installation space, reduces the area of the smoke exhaust and supply air civil air duct, increases the actual usable area of the building usually, and the integration of the smoke exhaust and supply air duct main body and the outer cast-in-place reinforced concrete wall can reduce the noise when the air duct is pressurized for air supply or smoke exhaust. By synchronously constructing the cast-in-place reinforced concrete air shaft and the inner lining air duct, the present device avoids cross-operation of different trades and speeds up the construction progress.

[0017] 2. By placing the inner support inside the smoke exhaust and supply air duct main body and using the limiting layer to block the inner support for limiting to prevent it from falling into the lower air duct, the inner support supports the smoke exhaust and supply air duct main body, avoiding the smoke exhaust and supply air duct main body from being crushed during the concrete pouring. When the strength of the concrete meets the requirements, the inner support can be taken out and reused. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is a schematic diagram of the unfolded structure of the smoke exhaust and supply air duct main body and the rain-proof component of the present utility model;

[0021] Figure 3This is a cross-sectional view of the cast-in-place reinforced concrete wall main body and the smoke prevention and exhaust air duct main body of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of the steel bar layer and the cast-in-place concrete wall layer of the present utility model;

[0023] Figure 5 This is a cross-sectional view of the rainproof component of the present utility model.

[0024] In the figure: 1. Smoke prevention and exhaust air duct main body; 2. Cast-in-place reinforced concrete wall main body; 21. Steel bar layer; 22. Cast-in-place concrete wall layer; 4. Welding groove; 5. Inner support; 6. Rainproof component; 61. Umbrella cap; 62. Rainproof pipe; 63. Diversion layer; 7. Connecting pipe; 8. Limiting layer; 9. Air outlet. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1

[0027] Please refer to Figures 1-4As shown in the figure, the integrated structure of the smoke prevention and exhaust air duct and the cast-in-place reinforced concrete wall includes the main body 1 of the smoke prevention and exhaust air duct. The outside of the main body 1 of the smoke prevention and exhaust air duct is installed with the main body 2 of the cast-in-place reinforced concrete wall. The main body 2 of the cast-in-place reinforced concrete wall includes a steel bar layer 21 on the inner side and a cast-in-place concrete wall layer 22 on the outer side. Both ends of the main body 1 of the smoke prevention and exhaust air duct are welded to the steel bar layer 21. Welding the main body 1 of the smoke prevention and exhaust air duct to the steel bar layer 21 does not require additional fixing components, which reduces costs. Moreover, welding grooves 4 are respectively opened at the upper and lower ends of the main body 1 of the smoke prevention and exhaust air duct. The welding grooves 4 can leave welding space for the welding between the main bodies 1 of the smoke prevention and exhaust air ducts and the welding between the main body 1 of the smoke prevention and exhaust air duct and the steel bar layer 21. The main bodies 1 of the smoke prevention and exhaust air ducts are vertically connected in sequence by welding. An internal support 5 is installed inside the main body 1 of the smoke prevention and exhaust air duct. An air outlet 9 is opened on the side wall of the main body 1 of the smoke prevention and exhaust air duct. A connecting pipe 7 is fixedly connected inside the air outlet 9. The connecting pipe 7 passes through the main body 2 of the cast-in-place reinforced concrete wall. During installation, the main body 1 of the smoke prevention and exhaust air duct is directly placed in the civil air shaft to serve as the inner formwork of the cast-in-place reinforced concrete wall. Subsequently, the main body 2 of the cast-in-place reinforced concrete wall is poured outside the main body 1 of the smoke prevention and exhaust air duct, thereby saving construction and installation space, reducing the area of the smoke prevention and exhaust civil air duct, increasing the actual usable area of the building during normal times, and the integration of the main body 1 of the smoke prevention and exhaust air duct and the outer cast-in-place reinforced concrete wall can reduce noise when the air duct is pressurized for air supply or smoke exhaust. This device synchronizes the construction of the cast-in-place reinforced concrete air shaft and the inner lining air duct, avoids cross-operation of different trades, and speeds up the construction progress.

[0028] The single installation height of the main body 1 of the smoke prevention and exhaust air duct is the same as the construction height of the main body 2 of the cast-in-place reinforced concrete wall. The main body 1 of the smoke prevention and exhaust air duct and the main body 2 of the cast-in-place reinforced concrete wall are gradually vertically stacked for construction, saving construction and installation space.

[0029] The main body 1 of the smoke prevention and exhaust air duct is made of steel plate with a thickness of greater than or equal to 1.5 mm.

[0030] The connecting pipe 7 is connected to the pressurized air supply pipe or the smoke exhaust pipe for pressurized air supply or smoke exhaust.

[0031] The height of the internal support 5 is longer than that of the main body 1 of the smoke prevention and exhaust air duct, and the internal support 5 is matched with the inner diameter of the main body 1 of the smoke prevention and exhaust air duct to support the main body 1 of the smoke prevention and exhaust air duct.

[0032] A limiting layer 8 is fixedly connected to the lower part of the inner wall of the main body 1 of the smoke prevention and exhaust air duct. During pouring, the internal support 5 is placed inside the main body 1 of the smoke prevention and exhaust air duct, and the internal support 5 is blocked by the limiting layer 8 for limiting to prevent it from falling into the lower air duct, so that the internal support 5 supports the main body 1 of the smoke prevention and exhaust air duct, avoiding the main body 1 of the smoke prevention and exhaust air duct from being crushed during concrete pouring. When the strength of the concrete meets the requirements, the internal support 5 can be taken out and reused.

[0033] The internal support 5 is made of wooden square or prefabricated metal support components.

[0034] Embodiment 2

[0035] Comparing with Comparative Example 1, please refer to Figure 5 As shown, the present utility model provides another implementation manner. A rain-proof component 6 is installed on the topmost smoke exhaust and ventilation duct main body 1. The rain-proof component 6 includes an umbrella cap 61, and the umbrella cap 61 is welded to the topmost smoke exhaust and ventilation duct main body 1. The flue gas inside the smoke exhaust and ventilation duct main body 1 is discharged through a rain-proof pipe 62. The cooperation of the umbrella cap 61 and the rain-proof pipe 62 avoids the entry of rainwater.

[0036] Rain-proof pipes 62 with openings inclined downward are respectively and fixedly connected to both sides of the umbrella cap 61.

[0037] A triangular flow guiding layer 63 is fixedly connected inside the umbrella cap 61. The flow guiding layer 63 is made of sound-absorbing material. The flow guiding layer 63 faces the air flow direction inside the smoke exhaust and ventilation duct main body 1, can guide the air flow to flow obliquely, reduce wind resistance, and absorb a certain amount of noise at the same time.

[0038] Parts not involved in this device are the same as the prior art or can be implemented by using the prior art.

[0039] Working principle: During installation, the smoke exhaust and ventilation duct main body 1 is directly placed in the civil engineering air shaft to serve as the inner formwork of the cast-in-place reinforced concrete wall. Subsequently, the cast-in-place reinforced concrete wall main body 2 is poured outside the smoke exhaust and ventilation duct main body 1, thereby saving construction and installation space, reducing the area of the smoke exhaust and ventilation civil engineering air duct, increasing the actual usable area of the building during normal times, and the integration of the smoke exhaust and ventilation duct main body 1 and the outer cast-in-place reinforced concrete wall can reduce noise when the air duct is pressurized for air supply or smoke exhaust. This device synchronizes the construction of the cast-in-place reinforced concrete air shaft and the lining air duct, avoids cross-operation of different trades, and speeds up the construction progress.

[0040] During pouring, the inner support 5 is placed inside the smoke exhaust and ventilation duct main body 1, and the inner support 5 is blocked by the limiting layer 8 for limiting to prevent it from falling into the lower air duct, so that the inner support 5 supports the smoke exhaust and ventilation duct main body 1, avoiding the smoke exhaust and ventilation duct main body 1 from being crushed during concrete pouring. When the strength of the concrete meets the requirements, the inner support 5 can be taken out and reused.

[0041] The flue gas inside the smoke exhaust and ventilation duct main body 1 is discharged through the rain-proof pipe 62. The cooperation of the umbrella cap 61 and the rain-proof pipe 62 avoids the entry of rainwater, and the flow guiding layer 63 faces the air flow direction inside the smoke exhaust and ventilation duct main body 1, can guide the air flow to flow obliquely, reduce wind resistance, and absorb a certain amount of noise at the same time.

[0042] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0043] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. An integrated structure of a smoke exhaust duct and a cast-in-place reinforced concrete wall, comprising a smoke exhaust duct body (1), characterized in that: A cast-in-place reinforced concrete wall body (2) is installed outside the smoke exhaust duct body (1), and the cast-in-place reinforced concrete wall body (2) includes an inner steel layer (21) and an outer cast-in-place concrete wall layer (22). Both ends of the smoke exhaust duct body (1) are welded to the steel layer (21), and welding grooves (4) are respectively provided at the upper and lower ends of the smoke exhaust duct body (1). The smoke exhaust duct body (1) is vertically connected in sequence by welding. An inner support (5) is installed inside the smoke exhaust duct body (1). An air outlet (9) is provided on the side wall of the smoke exhaust duct body (1). A connecting pipe (7) is fixedly connected inside the air outlet (9), and the connecting pipe (7) passes through the cast-in-place reinforced concrete wall body (2).

2. The integrated structure of smoke exhaust duct and cast-in-place reinforced concrete wall according to claim 1 is characterized in that: The height of a single installation of the smoke exhaust duct body (1) is consistent with the construction height of the cast-in-place reinforced concrete wall body (2).

3. The integrated structure of smoke exhaust duct and cast-in-place reinforced concrete wall according to claim 1 is characterized in that: The smoke exhaust duct body (1) is made of a steel plate with a thickness greater than or equal to 1.5 mm.

4. The integrated structure of smoke exhaust duct and cast-in-place reinforced concrete wall according to claim 1 is characterized in that: The connecting pipe (7) is connected to a pressurized air supply pipe or a smoke exhaust pipe for pressurized air supply or smoke exhaust.

5. The integrated structure of smoke exhaust duct and cast-in-place reinforced concrete wall according to claim 1 is characterized in that: The height of the inner support (5) is longer than the smoke exhaust duct body (1), and the inner support (5) matches the inner diameter of the smoke exhaust duct body (1) for supporting the smoke exhaust duct body (1).

6. The integrated structure of smoke exhaust duct and cast-in-place reinforced concrete wall according to claim 1 is characterized in that: A limiting layer (8) is fixedly connected to the lower part of the inner wall of the smoke exhaust duct body (1).

7. The integrated structure of smoke exhaust duct and cast-in-place reinforced concrete wall according to claim 1 is characterized in that: The inner support (5) is made of wood or prefabricated metal support components.

8. The integrated structure of smoke exhaust duct and cast-in-place reinforced concrete wall according to claim 1 is characterized in that: A rainproof component (6) is installed on the uppermost smoke exhaust duct body (1), and the rainproof component (6) comprises an umbrella cap (61), and the umbrella cap (61) is welded to the uppermost smoke exhaust duct body (1).

9. The integrated structure of smoke exhaust duct and cast-in-place reinforced concrete wall according to claim 8 is characterized in that: Rainproof pipes (62) with downwardly inclined openings are respectively fixedly connected to both sides of the umbrella cap (61).

10. The integrated structure of smoke exhaust duct and cast-in-place reinforced concrete wall according to claim 8 is characterized in that: A triangular-shaped guide layer (63) is fixedly connected to the interior of the umbrella cap (61), and the guide layer (63) is made of sound-absorbing material.

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