Intensive supply and exhaust type tunnel air tower

Abstract

The present invention discloses an intensive supply and exhaust type tunnel air tower, which includes an air tower main body. A vertical middle partition is arranged inside the air tower main body, dividing the air tower main body into a supply air duct and an exhaust air duct. The bottom of the supply air duct and the bottom of the exhaust air duct are respectively connected to an underground fan room through connection fans; the tops of the supply air duct and the exhaust air duct both exceed the designed ground line. An air supply opening is arranged in an overhanging manner on one side of the top of the supply air duct, and an air exhaust opening is arranged in an overhanging manner on one side of the top of the exhaust air duct. The orientation of the air exhaust opening is opposite to that of the air supply opening. On the premise of meeting the ventilation area, the present invention arranges the air supply opening and the air exhaust opening on the air tower main body in an overhanging manner, which can reduce the overall height of the air tower main body. Moreover, the overhanging contours of the air supply opening and the air exhaust opening are both set as arcs, further reducing the overall height of the air tower main body, thereby greatly reducing the occupied area of the above-ground structure of the air tower main body, reducing the impact on the surrounding environment and reducing the construction cost.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel ventilation, and particularly to an intensive supply and exhaust type tunnel air tower. Background Art

[0002] In recent years, with the deepening of infrastructure construction, tunnels have become longer and their cross-sections have become larger, and tunnel operation ventilation technology has also been continuously developing in the direction of longer and larger.

[0003] According to the tunnel length, cross-section, vehicle types, etc., an operation ventilation method that combines one or more ventilation methods is usually adopted. For mined tunnels in China with a length exceeding 5 km, a combined ventilation method of "ventilation shaft supply and exhaust type + jet fan" is mostly used. The ventilation shaft supply and exhaust type system generally includes ventilation shafts, fan rooms, connecting air ducts, air towers above the ground, etc. Typical examples are the Zhongnanshan Tunnel and the Huayingshan Tunnel.

[0004] The site selection of the air tower for long tunnels with supply and exhaust ventilation generally needs to be determined in combination with terrain, geology, environment, etc. The above-ground buildings such as air towers should be convenient for construction and conducive to waste gas emission and fresh air introduction. However, the above-ground air towers of typical tunnels occupy a large area. For example, the supply and exhaust air outlets of the air tower of the extra-long Huayingshan Tunnel with a total length of 8.2 km are separately arranged. The horizontal distances between the supply and exhaust air outlets of the left and right line tunnels are 18 m and 25 m respectively, and the exhaust air outlet faces upward and is placed 10 m above the supply air outlet; this results in a large area occupied by the above-ground structures of the air tower, a large impact of the above-ground structures on the surrounding environment, and also an increase in construction costs.

[0005] Therefore, how to reduce the floor area of the above-ground structures of the air tower to reduce the impact on the surrounding environment and construction costs 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 technical object of the present invention is to provide an intensive supply and exhaust type tunnel air tower to significantly reduce the floor area of the above-ground structures of the air tower, and achieve the purpose of reducing the impact of the above-ground structures on the surrounding environment and construction costs.

[0007] To achieve the above technical object, the present invention provides an intensive supply and exhaust type tunnel air tower, including an air tower main body. A vertical middle partition is arranged inside the air tower main body, dividing the air tower main body into a supply air duct and an exhaust air duct. The bottom of the supply air duct and the bottom of the exhaust air duct are respectively connected to an underground fan room through connecting fans;

[0008] The tops of the supply air duct and the exhaust air duct both exceed the designed ground line. One side of the top of the supply air duct is provided with an outward projection for a supply air outlet, and one side of the top of the exhaust air duct is provided with an outward projection for an exhaust air outlet. The orientation of the exhaust air outlet is opposite to that of the supply air outlet.

[0009] Preferably, the outlines of the overhanging parts of the air supply opening and the air exhaust opening are both arc-shaped.

[0010] Preferably, the bottom of the air exhaust opening is at least 6 meters higher than the top of the air supply opening, and the horizontal distance between the air supply opening and the air exhaust opening is at least 5 meters.

[0011] Preferably, a waterproof louver is arranged on the outside of the air supply opening, a wire mesh is arranged on the outside of the air exhaust opening, and a wind direction guiding sill is arranged on the bottom plate of the air exhaust opening.

[0012] Preferably, anti-falling and anti-rat nets are respectively arranged inside the air supply opening and the air exhaust opening.

[0013] Preferably, drainage slopes are respectively arranged on the bottom plates of the air supply opening and the air exhaust opening.

[0014] Preferably, guide vanes and fairing plates are respectively arranged at the corners of the air supply opening and the air exhaust opening.

[0015] Preferably, a maintenance ladder is arranged on one side of the wind tower main body where the air exhaust opening is located, a maintenance opening is arranged on the bottom plate of the air exhaust opening, and a cover plate is further arranged above the maintenance opening.

[0016] Preferably, a lock ring is arranged on the outer periphery of the part of the wind tower main body below the designed ground line.

[0017] Preferably, a circular ring beam is arranged on the outer periphery of the air supply opening, a semi-circular ring beam is arranged on the outer periphery of the air exhaust opening, air supply opening columns are fixedly arranged between the bottom plate and the top plate of the air supply opening, and air exhaust opening columns are fixedly arranged between the bottom plate and the top plate of the air exhaust opening.

[0018] Advantages of the present invention:

[0019] Due to the above structural design of the present invention, on the premise of meeting the ventilation area, the air supply opening and the air exhaust opening are arranged on the wind tower main body in an overhanging manner, which can reduce the overall height and floor area of the wind tower main body, and the overhanging outlines of the air supply opening and the air exhaust opening are both set as arc-shaped, further reducing the overall height of the wind tower main body, thereby greatly reducing the land occupation of the above-ground structures of the wind tower main body, reducing the impact on the surrounding environment and reducing the construction cost. Description of the drawings

[0020] Figure 1 is a schematic structural diagram of the front view of the present invention;

[0021] Figure 2 is a schematic structural diagram of the top view of the present invention;

[0022] Figure 3 is Figure 1 a schematic cross-sectional structural diagram at A-A in

[0023] Figure 4 For Figure 1 Schematic cross-sectional structure diagram at section B-B in

[0024] Figure 5 For Figure 1 Schematic cross-sectional structure diagram at section C-C in

[0025] Figure 6 Schematic structure diagram of the circular ring beam in the present invention;

[0026] Figure 7 Schematic structure diagram of the semi-circular ring beam in the present invention.

[0027] In the figure: 1 Wind tower main body, 2 Middle partition board, 3 Locking ring, 4 Air supply opening, 5 Air exhaust opening, 6 Circular ring beam, 7 Air supply opening column, 8 Semi-circular ring beam, 9 Air exhaust opening column, 10 Air supply opening top plate, 11 Air supply opening bottom plate, 12 Air exhaust opening top plate, 13 Air exhaust opening bottom plate, 14 Maintenance ladder, 15 Anti-falling and anti-rat net, 16 Design ground line, 17 Drainage slope, 18 Wind direction guiding sill, 19 Maintenance opening. Specific implementation mode

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

[0029] Embodiment:

[0030] As Figures 1-7 shown, the intensive air supply and exhaust type tunnel wind tower includes a wind tower main body 1. Due to the reasonable circular stress, the outline of the wind tower main body 1 is generally circular. A vertical middle partition board 2 is arranged inside the wind tower main body 1 to divide the wind tower main body 1 into an air supply duct and an air exhaust duct. The bottom of the air supply duct and the bottom of the air exhaust duct are respectively connected to the underground fan room through a connection fan to facilitate the ventilation and smoke exhaust of the main line tunnel;

[0031] The tops of the air supply duct and the air exhaust duct both exceed the design ground line 16. An air supply opening 4 is provided on the outer projection of one side of the top of the air supply duct, and an air exhaust opening 5 is provided on the outer projection of one side of the top of the air exhaust duct. Among them, the air supply opening 4 faces the annual main wind direction of the area where it is located, and the orientation of the air exhaust opening 5 is opposite to that of the air supply opening 4.

[0032] The main innovation of the present invention is that the air supply opening 4 and the air exhaust opening 5 are arranged in an outer projection manner, which can reduce the overall height of the wind tower main body 1, reduce the impact on the surrounding environment, and reduce the rainwater from entering the wind tower main body.

[0033] In this embodiment, in order to further reduce the height of the air supply opening 4 and thus reduce the overall height of the wind tower main body 1, the outer projection outlines of the air supply opening 4 and the air exhaust opening 5 are both arc-shaped to minimize the vertical height of the air supply opening 4.

[0034] The bottom of the exhaust air outlet 5 is at least 6 meters higher than the top of the supply air outlet 4, meeting the "Technical Standard for Building Smoke Prevention and Exhaust Systems" (GB 51251-2017); the horizontal distance between the supply air outlet 4 and the exhaust air outlet 5 is at least 5 meters, meeting the "Design Rules for Highway Tunnel Ventilation", so as to prevent the mixing of supply and exhaust air.

[0035] To avoid flooding and to prevent the intake of nearby fallen leaves during air supply, the bottom elevation of the supply air outlet 4 should be at least 1 meter higher than the surrounding design ground line 16.

[0036] A waterproof louver is provided outside the supply air outlet 4, and a wire mesh is provided outside the exhaust air outlet 5. A wind direction guide sill 18 is provided on the bottom plate of the exhaust air outlet 5 to effectively enhance the upward diffusion of the exhaust air speed.

[0037] Anti-falling and anti-rat nets 15 are respectively provided inside the supply air outlet 4 and the exhaust air outlet 5 to prevent people and animals from straying in.

[0038] Drainage slopes 17 are respectively provided on the bottom plates of the supply air outlet 4 and the exhaust air outlet 5 to reduce the entry of rainwater and the like into the main body 1 of the wind tower.

[0039] Flow guide vanes and fairing plates are respectively provided at the corners of the supply air outlet 4 and the exhaust air outlet 5 to avoid the generation of cross-flow, backflow, eddy current, etc.

[0040] An inspection ladder 14 is provided on one side of the main body 1 of the wind tower where the exhaust air outlet 5 is located. An inspection opening 19 is provided on the bottom plate of the exhaust air outlet 5, and a cover plate is also provided above the inspection opening 19 to meet the inspection requirements during the operation stage.

[0041] In some embodiments, to improve the structural stability of the main body 1 of the wind tower, a locking ring 3 is provided on the outer periphery of the part of the main body 1 of the wind tower below the design ground line 16.

[0042] In other embodiments, when the size of the main body 1 of the wind tower is large and the overall height is high, a circular ring beam 6 is provided on the outer periphery of the supply air outlet 4, a semi-circular ring beam 8 is provided on the outer periphery of the exhaust air outlet 5, and a supply air outlet column 7 is fixedly provided between the supply air outlet bottom plate 11 and the supply air outlet top plate 10 of the supply air outlet 4, and an exhaust air outlet column 9 is fixedly provided between the exhaust air outlet bottom plate 13 and the exhaust air outlet top plate 12 of the exhaust air outlet 5 to enhance the force-bearing performance and seismic performance of the structure of the main body 1 of the wind tower.

[0043] 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 efforts. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field according to the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall fall within the protection scope determined by the claims.

Claims

1. The intensive supply and exhaust type tunnel air tower, including the air tower main body, It is characterized in that: A vertical middle partition is arranged inside the air tower main body, dividing the air tower main body into a supply air duct and an exhaust air duct. The bottom of the supply air duct and the bottom of the exhaust air duct are respectively connected to the underground fan room through connection fans; The tops of the supply air duct and the exhaust air duct both exceed the designed ground line. One side of the top of the supply air duct is cantilevered to be provided with a supply air outlet, and one side of the top of the exhaust air duct is cantilevered to be provided with an exhaust air outlet. The orientation of the exhaust air outlet is opposite to that of the supply air outlet; The contours of the cantilevered parts of the supply air outlet and the exhaust air outlet are both arc-shaped; A waterproof louver is arranged outside the supply air outlet, a wire mesh is arranged outside the exhaust air outlet, and a wind direction guide sill is arranged on the bottom plate of the exhaust air outlet; Drainage slopes are respectively arranged on the bottom plates of the supply air outlet and the exhaust air outlet; Deflection vanes and fairing plates are respectively arranged at the corners of the supply air outlet and the exhaust air outlet.

2. The intensive supply and exhaust type tunnel air tower according to claim 1, It is characterized in that: The bottom of the exhaust air outlet is at least 6 meters higher than the top of the supply air outlet, and the horizontal distance between the supply air outlet and the exhaust air outlet is at least 5 meters.

3. The intensive supply and exhaust type tunnel air tower according to claim 1, It is characterized in that: Anti-falling and anti-rat nets are respectively arranged inside the supply air outlet and the exhaust air outlet.

4. The intensive supply and exhaust type tunnel air tower according to claim 1, It is characterized in that: An inspection ladder is arranged on one side of the air tower main body where the exhaust air outlet is located. An inspection opening is arranged on the bottom plate of the exhaust air outlet, and a cover plate is further arranged above the inspection opening.

5. The intensive supply and exhaust type tunnel air tower according to claim 1, It is characterized in that: A collar is arranged on the outer periphery of the part of the air tower main body below the designed ground line.

6. The intensive supply and exhaust type tunnel air tower according to claim 1, It is characterized in that: A circular ring beam is arranged on the outer periphery of the supply air outlet, a semi-circular ring beam is arranged on the outer periphery of the exhaust air outlet, a supply air outlet column is fixedly arranged between the bottom plate and the top plate of the supply air outlet, and an exhaust air outlet column is fixedly arranged between the bottom plate and the top plate of the exhaust air outlet.

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