Protective device suitable for combined air valve of urban railway tunnel ventilation system

Abstract

A protective device suitable for a combined air valve of an urban railway tunnel ventilation system is fixedly arranged on concrete and used for preventing the air valve from falling off, and comprises an air valve support, an air valve, a protective cover and a protective cover, and the air valve is fixedly arranged in the air valve support; the air valve bracket bottom frame is fixedly connected with the bottom of the air valve bracket and is used for bearing the air valve bracket; the top of the reinforcing support is fixedly connected with the air valve support bottom frame, the bottom of the reinforcing support is fixedly arranged on concrete, and a protective net mounting chamber is formed in the reinforcing support; the protection assembly is connected with the reinforcing support and used for preventing the air valve from falling off; the reinforced installation mode is adopted for solving the problem of driving safety in later operation, the protective net is additionally arranged, the high-altitude falling risk of air valve components is effectively reduced, other objects such as air valve blades are prevented from falling into a rail-mounted area, and the driving safety coefficient is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of electromechanical installation engineering, in particular to the field of installation of a combined air valve of a tunnel ventilation system. Background Art

[0002] The tunnel ventilation system usually includes piston / mechanical ventilation shafts, air ducts, tunnel fans and combined air valves. The system can switch between piston ventilation and mechanical ventilation by opening and closing the relevant combined air valves to achieve the requirements of normal working conditions, ventilation and heat exhaust in blocked working conditions or smoke exhaust in fire conditions in the tunnels adjacent to the station.

[0003] At present, the design wind pressure of domestic tunnel ventilation systems is usually -2000pa~+2000pa, and the driving speed is 80~100km / h. Especially in some urban rail projects, the driving speed reaches 160km / h, the wind valve wind pressure reaches -5000~+5000pa, the wind valves have no reinforcement measures, and are directly installed on the concrete foundation. The valve blades are located directly above the track area, and there are no anti-falling measures. There is a high risk of falling during the construction process, and there are problems such as valve blades and other components falling without protection during the later operation and driving stage. Utility Model Content

[0004] The utility model aims to provide a protective device for a combined air valve of a ventilation system of a tunnel of an urban railway, which has the advantage of preventing valve leaves and other objects from falling.

[0005] To achieve the above-mentioned purpose, the utility model provides a protective device for a combined air valve of a ventilation system in an urban railway tunnel, which is fixedly mounted on concrete and is used to prevent the air valve from falling. The device comprises: an air valve bracket, in which the air valve is fixedly mounted; a bottom frame of the air valve bracket, which is fixedly connected to the bottom of the air valve bracket and carries the air valve bracket; a reinforcement bracket, in which the top of the reinforcement bracket is fixedly connected to the bottom frame of the air valve bracket and the bottom is fixedly mounted on concrete, and a protective net installation chamber is formed inside the reinforcement bracket; a protective component, which is connected to the reinforcement bracket and is used to prevent the air valve from falling; wherein the protective component comprises: at least one layer of protective net and / or reinforcement connecting piece, in which at least one layer of the protective net is arranged in the protective net installation chamber; and the reinforcement connecting piece is arranged at the fixed connection between the reinforcement bracket and the bottom frame of the air valve bracket.

[0006] Preferably, at least one layer of protection net may be provided at the bottom of the air valve support and / or inside the bottom frame of the air valve support.

[0007] Preferably, the reinforcing connector includes: a plurality of L-shaped connecting pieces, wherein the first side surface of any L-shaped connecting piece is tightly connected to the reinforcing bracket to form a first sealing surface, and the second side surface of any L-shaped connecting piece is tightly connected to the bottom frame of the air valve bracket to form a second sealing surface.

[0008] Preferably, the protective device further comprises: a plurality of embedded steel plates, the lower half of each embedded steel plate is vertically fixed in the concrete, and the upper half of each embedded steel plate is fixedly connected to the bottom of the reinforcement bracket.

[0009] Preferably, a plurality of the embedded steel plates are equidistantly and vertically arranged in the concrete, and are respectively fixedly connected to the bottom of the reinforcement bracket.

[0010] Preferably, the reinforcement bracket and the embedded steel plate are fixedly connected by welding.

[0011] Preferably, a damper buffer is formed inside to provide space for opening and closing of the damper.

[0012] Preferably, there are several bolts, and the first sealing surface and the second sealing surface are both compressed by at least one bolt.

[0013] Preferably, the air valve bracket and the air valve, the air valve bracket bottom frame and the air valve bracket, and the reinforcement bracket and the air valve bracket bottom frame are all fixedly connected by welding.

[0014] Preferably, the air valve bracket and the air valve, the air valve bracket bottom frame and the air valve bracket, and the reinforcement bracket and the air valve bracket bottom frame are all fixedly connected by bolts.

[0015] In summary, compared with the prior art, the protective device for the combined air valve of the ventilation system of the urban railway tunnel provided by the utility model has the following beneficial effects:

[0016] First, the utility model adopts a reinforced installation method to solve the driving safety in later operation.

[0017] Secondly, the utility model adds a protective net to effectively reduce the risk of the air valve falling from a high altitude, prevent the air valve blades and the like from falling into the track area, and greatly reduce the driving safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the utility model.

[0019] Figure 2 It is a front view of the utility model.

[0020] Figure 3 It is a schematic diagram of the reinforcement connecting piece of the present invention.

[0021] Reference numerals;

[0022] 1- bottom frame of air valve bracket, 2- protective net, 3- reinforcement bracket, 4- embedded steel plate, 5- concrete, 6- air valve, 7- air valve buffer zone, 8- air valve bracket, 9- reinforcement connector, 91- L-type connector, 92- bolt, 10- protective net installation room. DETAILED DESCRIPTION

[0023] The following will be combined with the appended examples in the present utility model Figure 1 ~Attached Figure 3 , the technical scheme, structural features, objectives achieved and effects in the embodiments of the utility model are described in detail.

[0024] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the implementation methods of the utility model, and are not used to limit the conditions for the implementation of the utility model. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the utility model without affecting the efficacy and purpose that can be achieved by the utility model.

[0025] It should be noted that, in the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only the elements explicitly listed, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] The utility model provides a protective device for a combined air valve of a ventilation system in an urban railway tunnel. The protective device is fixedly arranged on a piston air hole at the top of the tunnel, and is mainly used to prevent the air valve 6 on the piston air hole from falling off. Specifically, the protective device is fixedly arranged on the concrete 5 around the piston air hole, and is used to prevent the air valve 6 and other objects from falling off and affecting the driving safety in the track area.

[0027] like Figures 1-2 As shown, the protective device comprises:

[0028] The air valve bracket 8, the air valve 6 is fixedly arranged in the air valve bracket 8, specifically, the two ends of the air valve 6 are respectively fixedly arranged on the opposite frames of the air valve bracket 8;

[0029] The air valve 6 includes: a plurality of valve leaves, which are components for opening and closing the air outlet; a plurality of valve leaf rotating rods, which are the same as the number of valve leaves, and any valve leaf rotating rod is horizontally fixed on the relative frame of the air valve bracket 8, and any valve leaf is penetrated on the valve leaf rotating rod, and the valve leaf can be rotated 90° with the valve leaf rotating rod as the axis. It should be clearly stated here that when the valve leaf is penetrated on the valve leaf rotating rod, it should be noted that the valve leaf area on both sides of the valve leaf rotating rod as the center line should be kept equal, so as to ensure that the valve leaf can be opened and closed normally more smoothly when the ventilation system is in operation.

[0030] The bottom frame 1 of the air valve support is fixedly connected to the bottom of the air valve support 8, and supports the air valve support 8 and further supports the air valve 6; since the bottom frame 1 of the air valve support is a frame structure, a air valve buffer zone 7 is formed inside it, which can prevent the air valve 6 from contacting other components below (such as the protective net 2, etc.) due to insufficient rotation space of the valve leaf during the opening and closing process of the air valve 6, thereby causing unnecessary damage to the valve leaf; in practice, the height of the bottom frame 1 of the air valve support can be designed according to actual conditions. The height ratio in the figure here is only for display, which is convenient for clear description, and its ratio is only used for explanation;

[0031] The reinforcement bracket 3 has a top fixedly connected to the bottom frame 1 of the air valve bracket, and a bottom fixedly set on the concrete 5; since the reinforcement bracket 3 is a frame structure, a protective net installation room 10 is formed inside it, and the reinforcement bracket 3 can firmly fix the air valve 6 at the required installation position.

[0032] The protection component is connected to the reinforcement bracket 3 and is used to prevent the air valve 6 from falling.

[0033] Wherein, the protection component comprises:

[0034] The protective net 2 and / or the reinforcement connector 9 are arranged in the protective net installation room 10 and fixedly connected to the reinforcement bracket 3; that is, the protective net 2 is arranged below the bottom of the bottom frame 1 of the air valve bracket to prevent the air valve 6 from falling by physical interception. The reinforcement connector 9 is arranged at the fixed connection between the top of the reinforcement bracket 3 and the bottom frame 1 of the air valve bracket to reduce the possibility of the air valve 6 falling by reinforcing the connection. When the protective net 2 and the reinforcement connector 9 are used together, once the air valve 6 falls, its impact on the protective net 2 can be reduced to avoid damage to the protective component.

[0035] It can be seen that the protection component here achieves the corresponding technical effects through two paths. The first is to use the protection net 2 to physically intercept the valve blades of the air valve 6 or other falling objects (such as soil residues, garbage in the ventilation system pipes, etc.); the second is to take further reinforcement measures to ensure the stability of the bottom frame 1 of the air valve bracket during the operation of the air valve 6, reduce vibration, and then reduce the vibration of the air valve 6, thereby reducing the possibility of the air valve 6 falling.

[0036] Based on the above, the operator can choose to use the protective net 2 and the reinforcement connector 9 alone or together according to the specific situation.

[0037] In a preferred embodiment, a plurality of layers of protective nets 2 may be arranged in the protective device, and at least one layer of protective nets 2 may be installed in a protective net installation room 10. One or more layers of protective nets 2 may be arranged at the bottom of the air valve bracket 8 or / and inside the bottom frame 1 of the air valve bracket (i.e., the air valve buffer zone 7); wherein, when arranged at the bottom of the air valve bracket 8 or / and inside the bottom frame 1 of the air valve bracket, it should be noted that the setting of the protective net 2 must not interfere with the rotation of the valve leaf, and the operator can achieve a stable setting of the protective net 2 by adjusting the size of the valve leaf.

[0038] The material and connection method of the protective net 2 are not limited. The reinforcement bracket 3 is used as an example for description here, and the rest are similar. Specifically, the wire mesh can be installed by welding it to the frame of the reinforcement bracket 3; or a nylon net can be tied to the frame of the reinforcement bracket 3 for installation; or a number of ring buckles are set on the frame of the reinforcement bracket 3, and the aforementioned technical effects are achieved by connecting the nylon net and the ring buckles. As mentioned above, a multi-layer design can be adopted, and different types of protective nets 2 can be combined for design. Here, it can be installed according to the actual situation without special restrictions. It should be noted that the operator should regularly clean up the fallen objects on the protective net 2 to prevent excessive accumulation and damage to the protective net 2.

[0039] like Figure 3 As shown, the reinforcement connector 9 includes:

[0040] A plurality of L-shaped connecting pieces 91, the first side surface of any L-shaped connecting piece 91 is tightly fitted with the top surface of the reinforcement bracket 3 to form a first sealing surface, and the second side surface of any L-shaped connecting piece 91 is tightly fitted with the side surface of the bottom frame 1 of the air valve bracket to form a second sealing surface; the first sealing surface and the second sealing surface are further tightly fitted by at least one bolt 92; that is, different bolts 92 respectively press the first side surface of the L-shaped connecting piece 91 with the top surface of the reinforcement bracket 3 and press the second side surface of the L-shaped connecting piece 91 with the side surface of the bottom frame 1 of the air valve bracket, so as to further fix the reinforcement bracket 3 and the bottom frame 1 of the air valve bracket.

[0041] In addition, the bottom of the aforementioned reinforcement bracket 3 is fixed on the concrete 5. If ordinary methods such as drilling holes in the concrete 5 and then driving steel bars into the concrete 5 are used directly, the reinforcement bracket 3 may become unstable. Here, a specific embodiment is introduced as a reference for the fixing method.

[0042] The operator can vertically bury the lower halves of several embedded steel plates 4 in the concrete 5 in advance, and achieve a fixed connection by welding the bottom of the reinforcement bracket 3 to the upper halves of the embedded steel plates 4 respectively. In this way, the embedded steel plates 4 and the reinforcement bracket 3 will be fixed in the concrete 5 in an integrated manner.

[0043] In addition, in a preferred embodiment, the plurality of embedded steel plates 4 are equidistantly and vertically arranged in the concrete 5 and are fixedly connected to the bottom of the reinforcement bracket 3 to achieve a better reinforcement effect.

[0044] It should be noted here that because the embedded steel plate 4 needs to be partially embedded in the concrete 5, the upper half must ensure flatness and the lower half must ensure verticality, and too much or too little margin cannot be reserved to affect the fixing effect.

[0045] Finally, the air valve bracket 8 and the air valve 6, the air valve bracket bottom frame 1 and the air valve bracket 8, and the reinforcement bracket 3 and the air valve bracket bottom frame 1 can be fixedly connected by welding or bolts, and the operator can choose according to the actual situation.

[0046] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A protective device for a combined air valve in a ventilation system of a metropolitan railway tunnel, fixedly mounted on concrete (5) to prevent the air valve (6) from falling, characterized in that: The device comprises: An air valve bracket (8), wherein the air valve (6) is fixedly arranged in the air valve bracket (8); The air valve bracket bottom frame (1) is fixedly connected to the bottom of the air valve bracket (8) and supports the air valve bracket (8); A reinforcement bracket (3), wherein the top of the reinforcement bracket (3) is fixedly connected to the bottom frame (1) of the air valve bracket, and the bottom is fixedly arranged on the concrete (5), and a protective net installation chamber (10) is formed inside the reinforcement bracket (3); A protection component is connected to the reinforcement bracket (3) and is used to prevent the air valve (6) from falling; wherein the protection component comprises: At least one layer of protective net (2) and / or reinforcing connector (9), at least one layer of the protective net (2) is arranged in the protective net installation room (10); the reinforcing connector (9) is arranged at the fixed connection between the reinforcing bracket (3) and the bottom frame (1) of the air valve bracket.

2. A protective device for a combined air valve in a ventilation system of a metropolitan railway tunnel according to claim 1, characterized in that: At least one layer of protection net (2) may be provided at the bottom of the air valve support (8) or / and inside the air valve support bottom frame (1).

3. A protective device for a combined air valve in a ventilation system of a metropolitan railway tunnel according to claim 2, characterized in that: The reinforcing connector (9) comprises: A plurality of L-shaped connecting pieces (91), wherein a first side surface of any L-shaped connecting piece (91) is tightly fitted and connected to the reinforcing bracket (3) to form a first sealing surface, and a second side surface of any L-shaped connecting piece (91) is tightly fitted and connected to the bottom frame (1) of the air valve bracket to form a second sealing surface.

4. A protective device for a combined air valve in a ventilation system of a metropolitan railway tunnel according to claim 3, characterized in that: The protective device further comprises: a plurality of embedded steel plates (4), the lower half of each embedded steel plate (4) being vertically fixed in the concrete (5), and the upper half of each embedded steel plate (4) being fixedly connected to the bottom of the reinforcement bracket (3).

5. A protective device for a combined air valve in a ventilation system of a metropolitan railway tunnel according to claim 4, characterized in that: A plurality of embedded steel plates (4) are vertically arranged at equal intervals in the concrete (5) and are respectively fixedly connected to the bottom of the reinforcement bracket (3).

6. A protective device for combined air valves in a ventilation system of a metropolitan railway tunnel according to claim 5, characterized in that: The reinforcement bracket (3) and the embedded steel plate (4) are both fixedly connected by welding.

7. A protective device for a combined air valve in a ventilation system of a metropolitan railway tunnel according to claim 6, characterized in that: An air valve buffer zone (7) is formed inside to provide space for the opening and closing of the air valve (6).

8. A protective device for combined air valves in a ventilation system of a metropolitan railway tunnel according to claim 7, characterized in that: A plurality of bolts (92), wherein the first sealing surface and the second sealing surface are both compressed by at least one bolt (92).

9. A protective device for combined air valves in a ventilation system of a metropolitan railway tunnel according to claim 8, characterized in that: The air valve bracket (8) and the air valve (6), the air valve bracket bottom frame (1) and the air valve bracket (8), and the reinforcement bracket (3) and the air valve bracket bottom frame (1) are all fixedly connected by welding.

10. A protective device for combined air valves in a ventilation system of a metropolitan railway tunnel according to claim 8, characterized in that: The air valve bracket (8) and the air valve (6), the air valve bracket bottom frame (1) and the air valve bracket (8), and the reinforcement bracket (3) and the air valve bracket bottom frame (1) are all fixedly connected by bolts.

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