Novel tunnel ventilation device

Abstract

The utility model provides a novel tunnel ventilation device which comprises a plurality of ventilation boxes, every two adjacent ventilation boxes can form a tunnel ventilation box through a plurality of connecting bolts on the four sides of the ventilation boxes, and the head end and the tail end of each tunnel ventilation box are installed at the entrance position of a tunnel and the deepest position of the tunnel respectively. Wind power is generated after the exhaust fan and the air inlet fan are powered on and run, fresh air outside the tunnel is exhausted, dirty air inside the tunnel is exhausted, the first cavity and the second cavity are separated through the partition plate, an air inlet system and an air exhaust system do not repel each other and belong to a whole, and when the workload is large, the air inlet system and the air exhaust system can work normally. And ventilation tasks, air exhaust or air inlet can be automatically adjusted and selected according to the change of the construction progress, the air exhaust device and the air inlet device serve as two independent systems and do not interfere with each other, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a novel tunnel ventilation device, belonging to the field of tunnel ventilation. Background Art

[0002] In the construction of mountain tunnels, drilling and blasting methods and trackless transportation are mainly used. Due to the large excavation section, a large amount of dust will appear during the construction. As the project goes deeper into the mountain, the oxygen content in the tunnel becomes less, and it is mixed with a lot of harmful gases, resulting in poor air quality in the tunnel. In order to ensure the safety of construction workers and the smooth progress of construction, it is necessary to circulate air supply and exhaust in the tunnel to achieve a suitable working environment. In the past, ventilation equipment can generally circulate the air in the channel and prevent the just-exhausted gas from being transported back into the pipeline as fresh air. However, in the actual construction process, this process is carried out dynamically. Existing equipment generally treats the exhaust system and the air intake as a whole. When encountering a relatively large workload, interference will be formed between the exhaust system and the air intake system, affecting the normal operation of the equipment.

[0003] Therefore, the utility model provides a novel tunnel ventilation device in which air intake and air exhaust do not interfere with each other. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a novel tunnel ventilation device in which air intake and air exhaust do not interfere with each other.

[0005] The utility model is achieved in this way:

[0006] A novel tunnel ventilation device comprises a plurality of ventilation boxes, wherein two adjacent ventilation boxes are connected head to tail to form a tunnel ventilation box, and the head and tail ends of the tunnel ventilation box are respectively installed at the tunnel entrance and the deepest part of the tunnel;

[0007] Each ventilation box is provided with a first cavity and a second cavity separated by a partition;

[0008] An exhaust fan, an inlet fan and several line pipes, an exhaust fan is installed on one side of the first cavity, and the exhaust fan is installed on the top of the ventilation box through the line pipe, an inlet fan is installed on one side of the second cavity, and the inlet fan is installed on the steel plate through the line pipe, and the inlet fan and the exhaust fan are electrically connected to the external substation.

[0009] As a further improvement, the horizontal length L1 of the ventilation box is 8-12 meters.

[0010] As a further improvement, a fixing plate fixed to the side of the tunnel is welded to one side of the bottom of each ventilation box, and the bottom of the fixing plate is welded to the other side of the bottom of the ventilation box through an inclined pressure-bearing steel plate.

[0011] As a further improvement, the angle between the pressure-bearing steel plate and the horizontal plane is 45°-60°.

[0012] As a further improvement, the exhaust fan and the inlet fan located inside the ventilation box are on the same vertical axis and in opposite directions.

[0013] As a further improvement, the vertical width L2 of the ventilation box is 1.25 times the diameter of the exhaust fan or the inlet fan.

[0014] As a further improvement, filters are provided at the tunnel entrance and on the sides of the ventilation box at the deepest part of the tunnel.

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

[0016] ① The utility model generates wind after the exhaust fan and the air inlet fan are powered on, so as to exhaust fresh air from the outside of the tunnel and exhaust the dirty air from the inside of the tunnel. The first cavity and the second cavity separated by the partition plate are used to realize that the air inlet and exhaust systems do not exclude each other and belong to the same whole. When the workload is large, the ventilation task, exhaust or air inlet, can be adjusted and selected according to the changes in the construction progress, so that the exhaust device and the air inlet device are two independent systems without interfering with each other, thereby improving the working efficiency.

[0017] ② The utility model is provided with filter screens at the tunnel entrance and the side of the ventilation box at the deepest part of the tunnel, which can prevent foreign matter from affecting the operation of the machine.

[0018] ③ The ventilation box of the utility model is welded by a number of ordinary thin steel plates, and due to the humid environment in the tunnel, the surface is painted, and the paint here includes but is not limited to waterproof paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a new type of tunnel ventilation device provided by an embodiment of the utility model.

[0021] Figure 2 It is a plan view of a novel tunnel ventilation device provided by an embodiment of the utility model.

[0022] Figure 3It is a schematic diagram of the internal structure of a new type of tunnel ventilation device provided by an embodiment of the utility model.

[0023] Figure 4 It is a structural perspective schematic diagram of a novel tunnel ventilation device provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0025] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] Reference Figure 1-Figure 4 As shown, this embodiment provides a specific implementation method for a novel tunnel ventilation device, including ventilation boxes 1, a plurality of which are connected head to tail to form a tunnel ventilation box, and the head and tail ends of the tunnel ventilation box are respectively installed at the tunnel entrance and the deepest part of the tunnel; each ventilation box 1 is provided with a first cavity 101 and a second cavity 102 separated by a partition;

[0027] An exhaust fan 3, an inlet fan 4 and several line pipes 7 are provided. An exhaust fan 3 is installed on one side of the first cavity 101, and the exhaust fan 3 is installed on the top of the ventilation box 1 through the line pipe 7. An inlet fan 4 is installed on one side of the second cavity 102, and the inlet fan 4 is installed on the steel plate through the line pipe 7. The inlet fan 4 and the exhaust fan 3 are electrically connected to the external substation.

[0028] The utility model generates wind force after the exhaust fan 3 and the inlet fan 4 are powered on to run, so that fresh air outside the tunnel is discharged and the polluted air inside the tunnel is discharged. The first cavity 101 and the second cavity 102 separated by the partition plate are used to realize that the air inlet and exhaust systems do not exclude each other and belong to the same whole. When the workload is relatively large, the ventilation task, exhaust or air inlet, can be adjusted and selected according to the changes in the construction progress, so that the exhaust device and the air inlet device are two independent systems without interfering with each other, thereby improving the working efficiency.

[0029] Furthermore, the horizontal length L1 of the ventilation box 1 is 8-12 meters. For tunnels with relatively long distances, it can be completed by installing it a few times, which reduces the construction steps and improves the construction efficiency. The optimal horizontal length L1 of the ventilation box 1 is 10 meters, which is convenient for calculating and spacing the ventilation box 1.

[0030] Furthermore, the vertical width L2 of the ventilation box 1 is 1.25 times the diameter of the exhaust fan 3 or the inlet fan 4. While ensuring that the exhaust fan 3 or the inlet fan 4 can operate normally, the gap between the exhaust fan 3 or the inlet fan 4 and the inner wall of the ventilation box 1 will not generate vortices due to the flow velocity.

[0031] As a possible specific implementation of the utility model, a fixing plate 8 fixed to the side of the tunnel is welded on one side of the bottom of each ventilation box 1, and the bottom of the fixing plate 8 is welded to the other side of the bottom of the ventilation box 1 through an inclined pressure-bearing steel plate 6. The design of the fixing plate 8 and the pressure-bearing steel plate 6 can bear the overall weight of the ventilation box 1 and improve the stability of the installation.

[0032] Furthermore, the angle between the pressure steel plate 6 and the horizontal plane is 45°-60°, wherein the optimum angle is 45°. The pressure steel plate 6, the fixing plate 8 and the bottom surface of the ventilation box 1 form a triangular support, an equilateral triangular support, and a more stable structure.

[0033] As a possible specific implementation method of the utility model, the exhaust fan 3 and the inlet fan 4 located inside the ventilation box 1 are on the same vertical axis and in opposite directions, which is convenient for the placement of the exhaust fan 3 and the inlet fan 4. During the installation process, it is also convenient for comparison to prevent the wrong direction installation, which may cause adverse reverse effects during actual operation.

[0034] As a possible specific implementation of the utility model, a filter screen 2 is provided at the tunnel entrance and on the side of the ventilation box 1 at the deepest part of the tunnel to prevent foreign matter from affecting the operation of the machine.

[0035] In one specific embodiment, the filter screen 2 is rectangular, which is convenient for direct installation into the ventilation box 1 without the need for a medium to connect.

[0036] As a possible specific implementation of the utility model, two adjacent ventilation boxes 1 can be connected via a ventilation hose 10, and the distance between the ventilation boxes 1 can be adjusted automatically according to the tunnel construction distance.

[0037] As a possible specific implementation of the utility model, two adjacent ventilation boxes 1 can be connected by a number of bolts 9 on the four sides of the ventilation box 1 to construct a tunnel ventilation box of relatively long length, which is suitable for tunnels of different lengths.

[0038] As a possible specific implementation of the utility model, the ventilation box 1 is welded from a number of ordinary thin steel plates, and due to the humid environment in the tunnel, the surface is painted to prevent rust, and the paint here includes but is not limited to waterproof paint.

[0039] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A new type of tunnel ventilation device, characterized in that: It comprises a plurality of ventilation boxes (1), wherein two adjacent ventilation boxes (1) are connected head to tail to form a tunnel ventilation box, wherein the head and tail ends of the tunnel ventilation box are respectively installed at the tunnel entrance and the deepest part of the tunnel; Each ventilation box (1) is provided with a first cavity (101) and a second cavity (102) separated by a partition plate; An exhaust fan (3), an inlet fan (4) and a plurality of line pipes (7), wherein an exhaust fan (3) is installed on one side of a first cavity (101), and the exhaust fan (3) is installed on the top of an interior of a ventilation box (1) via a line pipe (7); an inlet fan (4) is installed on one side of a second cavity (102), and the inlet fan (4) is installed on a steel plate via a line pipe (7); the inlet fan (4) and the exhaust fan (3) are electrically connected to an external substation.

2. The novel tunnel ventilation device according to claim 1 is characterized in that: The horizontal length L1 of the tunnel ventilation box is 8-12 meters.

3. The novel tunnel ventilation device according to claim 1 is characterized in that: A fixing plate (8) fixed to the side of the tunnel is welded to one side of the bottom of each ventilation box (1), and the bottom of the fixing plate (8) is welded to the other side of the bottom of the ventilation box (1) via an inclined pressure-bearing steel plate (6).

4. The novel tunnel ventilation device according to claim 3 is characterized in that: The angle between the pressure-bearing steel plate (6) and the horizontal plane is 45°-60°.

5. The novel tunnel ventilation device according to claim 1 is characterized in that: The exhaust fan (3) and the intake fan (4) located inside the ventilation box (1) are on the same vertical axis and in opposite directions.

6. The novel tunnel ventilation device according to claim 2 is characterized in that: The vertical width L2 of the ventilation box (1) is 1.25 times the diameter of the exhaust fan (3) or the intake fan (4).

7. The novel tunnel ventilation device according to claim 1 is characterized in that: Filter screens (2) are arranged at the tunnel entrance and on the side of the ventilation box (1) at the deepest part of the tunnel.

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