Natural ventilation and mechanical ventilation interconvertible road tunnel ventilation system

Abstract

The invention discloses a natural ventilation and mechanical ventilation interconvertible road tunnel ventilation system, which is arranged in a one-way driving road tunnel and comprises a tunnel road natural ventilation facility and a tunnel road mechanical ventilation facility, the tunnel road natural ventilation facility comprises a natural ventilation duct, a natural ventilation shaft and a natural ventilation valve; the tunnel road mechanical ventilation facility comprises a mechanical ventilation duct, a mechanical ventilation shaft, a mechanical ventilation valve and a ventilator. A natural ventilation opening of the one-way driving road tunnel is sequentially connected with a natural ventilation valve and a natural ventilation shaft through an air duct. The natural ventilation duct between the natural ventilation valve and the natural ventilation opening is sequentially connected with a tunnel mechanical ventilation valve, a ventilator and a mechanical ventilation shaft through a tee joint; the road tunnel mechanical ventilation valve and the ventilator are in a chain opening and closing relation. The invention provides a tunnel ventilation system which not only can meet the tunnel ventilation requirement, but also can solve the problems of land acquisition, landscape, environment and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of the construction of road tunnel ventilation systems, and particularly to a road tunnel ventilation system in which natural ventilation and mechanical ventilation can be converted into each other. Background Art

[0002] With the increasing awareness of the public about ecological environment indicators such as high-quality air quality year by year, the emission of polluted air in road tunnels has also become one of the most sensitive issues in tunnel construction.

[0003] The main scheme for the emission of polluted air in tunnels is centralized emission. Centralized emission is divided into high-altitude centralized emission and portal centralized emission. High-altitude centralized emission is to discharge polluted air through a high wind tower, which is conducive to the diffusion and dilution of pollutants and has the least impact on the surrounding environment; centralized emission at the portal is not conducive to the dilution and diffusion of pollutants and has a greater impact on the surrounding environment.

[0004] Whether it is high-altitude emission or portal emission, it poses great challenges to the construction of urban tunnels: high-altitude emission requires the setting of a high wind tower. The primary problem is land acquisition, and the secondary problem is the impact on the surrounding landscape and environment of the high wind tower; limited by the density of sensitive urban buildings, it is impossible to use the portal for the emission of polluted air.

[0005] Therefore, how to provide a tunnel ventilation system that can not only meet the tunnel ventilation requirements but also solve problems including land acquisition, landscape, environment, etc. has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0006] In view of the above-mentioned defects of the prior art, the present invention provides a road tunnel ventilation system in which natural ventilation and mechanical ventilation can be converted into each other, and the purpose achieved is to provide a tunnel ventilation system that can not only meet the tunnel ventilation requirements but also solve problems including land acquisition, landscape, environment, etc.

[0007] To achieve the above purpose, the present invention discloses a road tunnel ventilation system in which natural ventilation and mechanical ventilation can be converted into each other, which is arranged in a one-way road tunnel and includes a natural ventilation facility for the tunnel road and a mechanical ventilation facility for the tunnel road;

[0008] The natural ventilation facility for the tunnel road includes a natural ventilation duct, a natural ventilation shaft, and a natural ventilation valve;

[0009] The mechanical ventilation facility for the tunnel road includes a mechanical ventilation duct, a mechanical ventilation shaft, a mechanical ventilation valve, and a ventilator;

[0010] The one-way road tunnel is provided with a natural ventilation opening;

[0011] The natural ventilation opening is connected to the natural ventilation valve and the natural ventilation shaft in sequence through a duct;

[0012] The air duct provided between the natural ventilation valve and the natural ventilation opening and up to the natural ventilation shaft is the natural ventilation duct;

[0013] The natural ventilation duct between the natural ventilation valve and the natural ventilation opening is sequentially connected to the road tunnel mechanical ventilation valve, the ventilator, and the mechanical ventilation shaft through a tee;

[0014] The air ducts provided between the road tunnel mechanical ventilation valve and the tee, between the road tunnel mechanical ventilation valve and the ventilator, and between the ventilator and the mechanical ventilation shaft are the mechanical ventilation ducts;

[0015] The road tunnel mechanical ventilation valve and the ventilator are in an interlocked opening and closing relationship.

[0016] Preferably, the ventilator is a road tunnel jet fan.

[0017] Preferably, the natural ventilation shaft and the mechanical ventilation shaft respectively use independent ventilation shafts.

[0018] Preferably, the natural ventilation shaft and the mechanical ventilation shaft share the same ventilation shaft.

[0019] Preferably, when the vehicles in the one-way road tunnel are running normally, the natural ventilation valve is opened, the road tunnel mechanical ventilation valve and the ventilator are closed, and the tunnel road natural ventilation facility is switched to. The air enters and exits the one-way road tunnel through the natural ventilation opening, the natural ventilation valve, the ventilation shaft, and the corresponding air duct;

[0020] When the pollutant concentration in the one-way road tunnel exceeds the standard or there is a blockage, the road tunnel mechanical ventilation valve and the ventilator are opened, the natural ventilation valve is closed, and the tunnel road mechanical ventilation facility is switched to. The air enters and exits the one-way road tunnel through the natural ventilation opening, the ventilation shaft, the road tunnel mechanical ventilation valve, the ventilator, and the corresponding air duct.

[0021] Preferably, the ventilator is a unidirectional or bidirectional rotating fan.

[0022] Preferably, according to requirements, two or more road tunnel ventilation systems capable of mutually converting natural ventilation and mechanical ventilation are provided in the one-way road tunnel.

[0023] Advantages of the present invention:

[0024] The present invention provides a tunnel ventilation system that can not only meet the tunnel ventilation requirements but also solve problems including land acquisition, landscape, environment, etc.

[0025] When the present invention has a certain quantity and combination, the tunnel can be constructed without a windless tower. This ventilation system is universal and can be extended to other similar projects.

[0026] The present invention can overcome the biases of the prior art. Establishing a wind tower is considered a necessary technical means. After applying the present invention, in a one-way road tunnel, more than two sets of road tunnel ventilation systems that can be mutually converted between natural ventilation and mechanical ventilation are set up. Forming a mutually convertible road tunnel ventilation system can make the air quality inside and outside the one-way road tunnel meet the standards, and the tunnel can be constructed without a wind tower.

[0027] The application of the present invention makes the urban tunnel exhaust system technology more reliable. It can not only meet the tunnel ventilation but also solve the problem of setting up the exhaust tower in the tunnel ventilation system. It has general applicability to the tunnel ventilation system and is convenient to be extended to similar projects.

[0028] The following will further illustrate the concept, specific structure and technical effects of the present invention with reference to the accompanying drawings to fully understand the purpose, features and effects of the present invention. Brief Description of the Drawings

[0029] Figure 1 The schematic diagram of the tunnel exhaust system showing an embodiment of the present invention is shown.

[0030] In the figure: 1. One-way road tunnel; 2. Natural ventilation opening; 3. Natural ventilation valve; 4. Air shaft; 5. Mechanical ventilation valve; 6. Ventilator; 7. Air duct. Detailed Embodiments

[0031] Embodiment

[0032] As Figure 1 shown, a road tunnel ventilation system that can be mutually converted between natural ventilation and mechanical ventilation is set in the one-way road tunnel 1, including the natural ventilation facilities and mechanical ventilation facilities of the tunnel road;

[0033] The natural ventilation facilities of the tunnel road include a natural ventilation duct, a natural ventilation shaft, and a natural ventilation valve 3;

[0034] The mechanical ventilation facilities of the tunnel road include a mechanical ventilation duct, a mechanical ventilation shaft, a mechanical ventilation valve 5, and a ventilator 6;

[0035] The one-way road tunnel 1 is provided with a natural ventilation opening 2;

[0036] The natural ventilation opening 2 is connected to the natural ventilation valve 3 and the natural ventilation shaft in sequence through the air duct 7;

[0037] The air duct 7 provided between the natural ventilation valve 3 and the natural ventilation opening 2 and up to the natural ventilation shaft is a natural ventilation duct;

[0038] The natural ventilation duct between the natural ventilation valve 3 and the natural ventilation opening 2 is sequentially connected to the road tunnel mechanical ventilation valve 5, the ventilator 6, and the mechanical ventilation shaft through a tee joint;

[0039] The air ducts 7 provided between the road tunnel mechanical ventilation valve 5 and the tee joint, between the road tunnel mechanical ventilation valve 5 and the ventilator 6, and between the ventilator 6 and the mechanical ventilation shaft are mechanical ventilation ducts;

[0040] The road tunnel mechanical ventilation valve 5 and the ventilator 6 are in an interlocking opening and closing relationship.

[0041] The technical solution adopted by the present invention is: a one-way driving tunnel, a jet fan, a diversion air duct, a diversion fan, a diversion combined air valve, a tunnel exhaust fan, and a tunnel exhaust combined air valve.

[0042] The natural ventilation facilities of the tunnel road include a natural ventilation opening 2 provided in the one-way driving road tunnel 1; the natural ventilation opening 2 is connected to the mechanical ventilation valve 5 through an air duct 7; the mechanical ventilation valve 5 is connected to the natural ventilation shaft through an air duct 7.

[0043] The mechanical ventilation facilities of the tunnel road include a mechanical ventilation opening provided in the one-way driving road tunnel 1; the mechanical ventilation opening is connected to the mechanical ventilation valve 5 through an air duct 7; the mechanical ventilation valve 5 is connected to the ventilator 6 through an air duct 7; the ventilator 6 is connected to the mechanical ventilation shaft through an air duct 7.

[0044] In some embodiments, the ventilator 6 is a road tunnel jet fan.

[0045] In some embodiments, the natural ventilation shaft and the mechanical ventilation shaft respectively use independent ventilation shafts.

[0046] In some embodiments, the natural ventilation shaft and the mechanical ventilation shaft share the same ventilation shaft 4.

[0047] In practical applications, the natural ventilation shaft can share the same ventilation shaft 4 with the mechanical ventilation shaft, or can respectively use independent ventilation shafts.

[0048] The natural ventilation shaft can share the natural ventilation opening 2 with the mechanical ventilation shaft, or can respectively use independent air openings.

[0049] At least one of sharing the same ventilation shaft 4 and sharing the natural ventilation opening 2 exists.

[0050] In some embodiments, when the vehicles in the one-way driving road tunnel 1 are running normally, the natural ventilation valve 3 is opened, the road tunnel mechanical ventilation valve 5 and the ventilator 6 are closed, and the tunnel road natural ventilation facilities are switched. The air enters and exits the one-way driving road tunnel 1 through the natural ventilation opening 2, the natural ventilation valve 3, the ventilation shaft 4, and the corresponding air ducts 7;

[0051] When the pollutant concentration in the one-way road tunnel 1 exceeds the standard or a blockage occurs, the mechanical ventilation valve 5 and the ventilator 6 of the road tunnel are opened, and the natural ventilation valve 3 is closed, switching to the mechanical ventilation facility of the tunnel road. Air enters and exits the one-way road tunnel 1 through the natural ventilation opening 2, the air shaft 4, the mechanical ventilation valve 5 of the road tunnel, the ventilator 6, and the corresponding air ducts 7.

[0052] In practical applications, according to the vehicle driving conditions or the magnitude of the indoor pollutant concentration, it is determined whether the ventilation system is switched to the natural ventilation facility or the mechanical ventilation facility of the tunnel road. That is, when the pollutant concentration in the one-way road tunnel 1 exceeds the standard or a blockage occurs, the mechanical ventilation valve 5 and the ventilator 6 of the road tunnel are opened, and the natural ventilation valve 3 is closed, switching to the mechanical ventilation facility of the tunnel road. When the vehicles are running normally in the one-way road tunnel 1, the natural ventilation valve 3 is opened, the mechanical ventilation valve 5 and the ventilator 6 of the road tunnel are closed, and it is switched to the natural ventilation facility of the tunnel road, which can naturally discharge or mechanically discharge the pollutants in the one-way road tunnel 1, and naturally introduce or mechanically send the fresh air of the atmosphere outside the one-way road tunnel 1.

[0053] In some embodiments, the ventilator 6 is a unidirectional or bidirectional rotating fan.

[0054] In some embodiments, according to the requirements, two or more road tunnel ventilation systems that can be mutually converted between natural ventilation and mechanical ventilation are provided in the one-way road tunnel 1.

[0055] In the existing one-way road tunnel 1, building a wind tower is considered a necessary technical means. After applying the present invention, by providing two or more road tunnel ventilation systems that can be mutually converted between natural ventilation and mechanical ventilation in the one-way road tunnel 1, forming a mutually convertible road tunnel ventilation system can make the air quality inside and outside the one-way road tunnel 1 meet the standards, and there is no need to build a wind tower.

[0056] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. A road tunnel ventilation system that can convert natural ventilation and mechanical ventilation into each other; characterized in that: A tunnel (1) provided in a one-way road includes a natural ventilation facility for the tunnel road and a mechanical ventilation facility for the tunnel road; The tunnel road natural ventilation facilities include natural ventilation ducts, natural ventilation shafts, and natural ventilation valves (3); The tunnel road mechanical ventilation facilities include a mechanical ventilation duct, a mechanical ventilation shaft, a mechanical ventilation valve (5), and a ventilator (6); The one-way road tunnel (1) is provided with a natural ventilation opening (2); The natural ventilation port (2) is connected to the natural ventilation valve (3) and the natural ventilation well in sequence through an air duct (7); The air duct (7) provided from the natural ventilation valve (3) to the natural ventilation port (2) and to the natural ventilation shaft is the natural ventilation duct; The natural ventilation passage between the natural ventilation valve (3) and the natural ventilation port (2) is connected in sequence to the tunnel mechanical ventilation valve (5), the ventilator (6) and the mechanical ventilation shaft via a tee; The air duct (7) provided from the road tunnel mechanical ventilation valve (5) to the tee, from the road tunnel mechanical ventilation valve (5) to the ventilator (6), and from the ventilator (6) to the mechanical ventilation shaft is the mechanical ventilation duct; The road tunnel mechanical ventilation valve (5) and the ventilator (6) are in an interlocking opening and closing relationship.

2. The road tunnel ventilation system with convertible natural ventilation and mechanical ventilation according to claim 1 is characterized in that: The ventilator (6) is a road tunnel jet fan.

3. The road tunnel ventilation system with convertible natural ventilation and mechanical ventilation according to claim 1 is characterized in that: The natural ventilation shaft and the mechanical ventilation shaft use independent air shafts respectively.

4. The road tunnel ventilation system with convertible natural ventilation and mechanical ventilation according to claim 1 is characterized in that: The natural ventilation shaft and the mechanical ventilation shaft share the same air shaft (4).

5. The road tunnel ventilation system with mutual conversion between natural ventilation and mechanical ventilation according to claim 4 is characterized in that: When the vehicle in the one-way road tunnel (1) is operating normally, the natural ventilation valve (3) is opened, the road tunnel mechanical ventilation valve (5) and the ventilator (6) are closed, and the natural ventilation facilities of the tunnel road are switched to, and the air enters and exits the one-way road tunnel (1) through the natural ventilation port (2), the natural ventilation valve (3), the air shaft (4), and the corresponding air duct (7); When the pollutant concentration in the one-way road tunnel (1) exceeds the standard or is blocked, the road tunnel mechanical ventilation valve (5) and the ventilator (6) are opened, the natural ventilation valve (3) is closed, and the tunnel road mechanical ventilation facilities are switched to, and air enters and exits the one-way road tunnel (1) through the natural ventilation port (2), the air shaft (4), the road tunnel mechanical ventilation valve (5), the ventilator (6), and the corresponding air duct (7).

6. The road tunnel ventilation system with mutual conversion between natural ventilation and mechanical ventilation according to claim 1 is characterized in that: The ventilator (6) is a unidirectional or bidirectional operating fan.

7. The road tunnel ventilation system with mutual conversion between natural ventilation and mechanical ventilation according to claim 1 is characterized in that: In the one-way road tunnel (1), two or more road tunnel ventilation systems are provided, in which natural ventilation and mechanical ventilation can be switched to each other.

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