Connecting structure of underground space smoke exhaust air pipe and air valve

Abstract

The utility model discloses a connecting structure of an underground space smoke exhaust air pipe and an air valve. The connecting structure comprises the air pipe and the air valve, an air valve flange is arranged at one end of the air valve, and a first structure connected with the air valve flange in a sealed mode, a second structure connecting the inner wall and the outer wall of the air pipe together and an air pipe flange connecting the second structure with the air valve flange are arranged on the inner wall of the air pipe. According to the first structure, the inner wall layer of the air pipe extends to the outer side of the end face of the air pipe, and a turned-over edge attached to an air valve flange in a sealed mode is arranged at the outer end of the inner wall layer. The second structure is a Z-shaped sealing plate which is synchronously connected with the outer wall layer, the end face, the inner wall layer and the air pipe flange of the air pipe in an attached mode. The inner wall face of the air pipe is directly connected with the air valve flange through the first structure, the assembling clearance of riveting of an existing aluminum alloy flange is reduced, and therefore the leakage problem is solved. The inner wall and the outer wall of the air pipe are jointly connected through the second structure, the integrity and stability of connection with the air pipe are improved, and then the problem that looseness is likely to be caused during later operation is solved.

Description

Technical Field

[0001] The present application relates to the technical field of underground space smoke exhaust, and in particular to a connection structure between an underground space smoke exhaust air duct and an air valve. Background Art

[0002] Underground spaces, such as urban underground rail transit stations and section tunnels, are long and narrow underground buildings. The entrances and exits of the stations and the air supply and exhaust shafts are connected to the outside world to achieve exhaust requirements. As people's quality of life continues to improve, subways have become the main means of transportation in cities. During subway operations, stations gather and disperse a large number of passengers. In order to provide a comfortable riding environment, the safe and stable operation of the ventilation and air-conditioning system is particularly important.

[0003] The public area of ​​the station hall and platform is the activity area for passengers to get on and off the train. The air-conditioning supply duct, return air and smoke exhaust duct, and pressurized air supply duct in the public area are installed on the upper part of the decoration ceiling. During normal operation, the air-conditioning supply and return ducts play an air conditioning role to achieve the purpose of a comfortable environment. In the event of an emergency fire, the smoke prevention and exhaust system is activated, and the smoke in the station is discharged to the outside through the smoke prevention and exhaust composite duct, which buys time for passengers to escape and effectively controls the safety of life and property.

[0004] At present, the connection structure of the aluminum alloy flange of the station smoke exhaust double-sided color steel fiberglass composite air duct and the steel flange of the air valve is as shown in the attached manual. Figure 1-2 As shown, its main shortcomings are:

[0005] 1. The thickness and strength of the flange of the air duct (aluminum alloy profile) do not match the flange of the air valve, which may easily cause uneven force on the flange and deformation of the flange, affecting the use function of the air valve.

[0006] 2. After the flange gasket is tightened with bolts, uneven force appears locally on the gasket, causing air leakage.

[0007] 3. The double-sided color steel fiberglass composite air duct and the aluminum alloy flange are riveted together, and the long-term operation of the air-conditioning system may easily cause the flange to loosen.

[0008] 4. Leakage is prone to occur at the riveted joints between the double-sided color steel fiberglass composite air duct and the aluminum alloy flange. Summary of the invention

[0009] In response to the above-mentioned problems, the present application aims to provide a connection structure between an underground smoke exhaust duct and an air valve, which reduces the current assembly gap of the aluminum alloy flange riveting, thereby solving the leakage problem, and at the same time connects the inner and outer walls of the duct together, thereby improving the integrity and stability of the connection with the duct, thereby overcoming the problem of looseness that may easily occur during later operation.

[0010] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: a connection structure between an underground space smoke exhaust duct and an air valve, comprising an air duct and an air valve, wherein an air valve flange is provided at one end of the air valve, and characterized in that: a structure 1 is provided on the inner wall of the air duct and is closed and connected to the air valve flange, a structure 2 connects the inner and outer walls of the air duct together, and a duct flange connects the structure 2 to the air valve flange.

[0011] Preferably, the first structure is to extend the inner wall layer of the air duct to the outside of its end surface, and to provide a flange at the outer end of the inner wall layer that is tightly fitted with the air valve flange.

[0012] Preferably, the second structure is a Z-shaped sealing plate that is synchronously connected to the outer wall layer of the air duct, the end face of the air duct, the inner wall layer of the air duct and the flange of the air duct.

[0013] Preferably, a flange gasket is sandwiched between the air valve flange and the air duct flange, and the flange gasket and the flange are embedded in a plane.

[0014] The beneficial effect of the present application is that the present application directly connects the inner wall surface of the air duct with the air valve flange through structure 1, thereby reducing the assembly gap of the current aluminum alloy flange riveting, thereby solving the leakage problem.

[0015] The inner and outer walls of the air duct are connected together through structure 2, thereby improving the integrity and stability of the connection with the air duct, thereby overcoming the problem of looseness that may occur during later operation.

[0016] The problems of uneven force, easy deformation and easy leakage of the currently used aluminum alloy flange can be solved by using the duct flange and flange gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram showing the current connection between the air duct and the air valve.

[0018] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0019] Figure 3 This is a disassembled diagram of the connection structure of this application.

[0020] Figure 4 The connection structure for this application is shown in the figure for connecting the air duct and the air valve.

[0021] Figure 5 This is a physical illustration of the flange that is extended and set on the inner wall layer of the air duct in this application.

[0022] In the figure: 6-aluminum alloy profile; 7-rivet; 8-bolt. DETAILED DESCRIPTION

[0023] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Refer to the attached Figures 1 to 4 The connection structure between an underground smoke exhaust duct and an air valve shown in the figure comprises an air duct 1 and an air valve 2. One end of the air valve 2 is provided with an air valve flange 21. The air valve flange 21 is a flange structure formed by flanging the end of the air valve body and having a connection hole.

[0025] In order to solve the problem of leakage that is prone to occur when the air duct is currently riveted with an aluminum alloy flange (riveting creates an assembly gap between the aluminum alloy flange and the air duct), a structure 1 that is closed and connected to the air valve flange 21 is provided on the inner wall of the air duct 1. This structure 1 directly connects the inner wall surface of the air duct with the air valve flange 21, thereby reducing the current assembly gap of the riveted aluminum alloy flange, thereby solving the leakage problem.

[0026] At present, the aluminum alloy flange is connected to the outer wall of the air duct by single-sided riveting, which may easily cause the flange to loosen during long-term operation. Therefore, in order to solve this problem, the present application is provided with a second structure that connects the inner and outer walls of the air duct 1 together. The inner and outer walls of the air duct are connected together through the second structure, thereby improving the integrity and stability of the connection with the air duct, thereby overcoming the problem of looseness that may occur during later operation.

[0027] In order to solve the problem that the thickness and strength of the flange (aluminum alloy profile) of the current air duct and the flange of the air valve do not match, the connection structure includes an air duct flange 3 connecting the structure 2 with the air valve flange 21. The air duct flange 3 is preferably a structure that matches the specifications of the air valve flange 21, and the air duct and the air valve can be firmly connected through the structure 2, thereby solving the problem that the aluminum alloy flange currently used is unevenly stressed and easy to deform.

[0028] Specifically, Figure 3-4 As shown in FIG. 1 , the structure 1 is to extend the inner wall layer of the air duct 1 to the outside of its end face, and to provide a flange 11 at the outer end of the inner wall layer to seal and fit the air valve flange 21. After the inner wall layer of the air duct is extended, it is directly attached and connected to the air valve flange 21 through the flange 11, solving the problem of leakage caused by excessive gap in the current aluminum alloy flange assembly. The specific connection structure is as follows Figure 4 shown.

[0029] Specifically, Figure 3-4 As shown, the second structure is a Z-shaped sealing plate 4 that is synchronously attached to the outer wall layer of the air duct 1, the end face of the air duct, the inner wall layer of the air duct and the air duct flange 3. One side of the Z-shaped sealing plate 4 is attached to the outer surface of the outer wall of the air duct, and is preferably fixed by rivets; then the Z-shaped sealing plate 4 is attached to the end face of the air duct, and then continues to attach to the surface of the inner wall layer of the air duct, and at the same time, one side of the Z-shaped sealing plate 4 is flatly clamped between the inner wall layer of the air duct and the air duct flange 3, and the three are preferably connected by rivets, as shown in FIG. Figure 4 As shown, the Z-shaped sealing plate 4 is used to synchronously connect the inner and outer walls of the air duct and the air duct flange 3, which can greatly improve the stability of the air duct connection compared to the current single-sided connection of the aluminum alloy flange and the air duct. After the connection, the air duct flange 3 is connected to the air valve flange 21 by bolts.

[0030] To achieve the closure after the air duct flange 3 and the air valve flange 21 are connected, as shown in FIG. Figure 3-4 As shown, a flange gasket 5 is sandwiched between the air valve flange 21 and the air duct flange 3, and the flange gasket 5 is used to achieve a sealing effect at the connection between the air duct flange 3 and the air valve flange 21.

[0031] Since the flange 11 of the inner wall layer of the air duct is embedded between the air valve flange 21 and the air duct flange 3, in order to avoid the influence of the flange 11 on the sealing of the flange gasket 5, as shown in FIG. Figure 3-4 As shown, the flange gasket 5 and the flange 11 are embedded in a plane, that is, a step for embedding the flange 11 is provided on the flange gasket 5, so that the surfaces of the two can be flush after being embedded with each other, which is convenient for the duct flange 3 to be flat and sealed.

[0032] The principle of the present application is: the connection structure extends the inner wall layer of the air duct and then directly adheres to and connects with the air valve flange 21 through the flange 11; then the Z-shaped sealing plate 4 is adhered to the end face of the air duct, and then continues to adhere to the surface of the inner wall layer of the air duct, and at the same time, one side edge of the Z-shaped sealing plate 4 is flatly clamped between the inner wall layer of the air duct and the air duct flange 3, and the three are preferably connected by rivets, and a flange gasket 5 is clamped between the air valve flange 21 and the air duct flange 3. After the connection, the air duct flange 3 is connected to the air valve flange 21 by bolts to achieve a stable connection and sealing effect between the air duct and the air valve.

[0033] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. A connection structure between an underground smoke exhaust air duct and an air valve, comprising an air duct (1) and an air valve (2), wherein one end of the air valve (2) is provided with an air valve flange (21), characterized in that: The inner wall of the air duct (1) is provided with a structure 1 which is closed and connected to the air valve flange (21), a structure 2 which connects the inner and outer walls of the air duct (1), and an air duct flange (3) which connects the structure 2 to the air valve flange (21).

2. The connection structure according to claim 1, characterized in that: The first structure is to extend the inner wall layer of the air duct (1) to the outside of its end surface, and to provide a flange (11) at the outer end of the inner wall layer that is tightly fitted with the air valve flange (21).

3. The connection structure according to claim 2, characterized in that: The second structure is a Z-shaped sealing plate (4) which is synchronously connected to the outer wall layer of the air duct (1), the end face of the air duct, the inner wall layer of the air duct and the air duct flange (3).

4. The connection structure according to claim 3, characterized in that: A flange gasket (5) is sandwiched between the air valve flange (21) and the air duct flange (3), and the flange gasket (5) and the flange (11) are embedded in a plane.

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