Loess tunnel ventilation device

Abstract

The utility model belongs to the technical field of ventilation devices, and particularly relates to a loess tunnel ventilation device which comprises a ventilation pipe and two fan sets, the two fan sets are communicated with the two ends of the ventilation pipe respectively, the ventilation pipe comprises an air inlet pipe and an air outlet pipe, and bent pipes are symmetrically arranged in the middle of the air inlet pipe. The air inlet pipe communicates with the air outlet pipe through the two bent pipes, the side wall of the air outlet pipe fixedly communicates with an air outlet assembly, and the air outlet pipe is fixedly connected to the bottom of the air inlet pipe. According to the loess tunnel ventilation device, the fan set pumps air outside the loess tunnel into the air inlet pipe, the air flows along the air inlet pipe, and the air flowing to the middle of the air inlet pipe enters the middle of the air outlet pipe along the bent pipe and then flows from the middle of the air outlet pipe to the end of the air outlet pipe, so that the air is firstly exhausted from the middle of the tunnel through the ventilation mode; and the air is gradually exhausted to the end part of the tunnel, so that sufficient air circulation in the middle of the tunnel is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation devices, and in particular relates to a ventilation device for a loess tunnel. Background Art

[0002] Tunnels are special tubular structures. Due to their small space and closed nature, the exhaust gas emitted by vehicles passing through tunnels, if not ventilated promptly and properly, will cause the accumulation of carbon monoxide and suspended particulate matter, which will directly affect the personal safety of vehicle drivers, passengers and maintenance staff passing through the tunnel.

[0003] The commonly used tunnel ventilation device is to send air from the outside of the tunnel into the tunnel. The air supply pipe is equipped with an air outlet starting from the end. During ventilation, the air starts to be discharged from the air outlet near the end of the tunnel. After reaching the middle of the tunnel, the air flow is small, which affects the ventilation effect in the middle of the tunnel. Utility Model Content

[0004] The purpose of the utility model is to provide a loess tunnel ventilation device, which can ensure sufficient air circulation in the middle of the tunnel and improve the ventilation effect, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a loess tunnel ventilation device, comprising a ventilation pipe and a fan group, wherein there are two fan groups, and the two fan groups are respectively connected to the two ends of the ventilation pipe, and the ventilation pipe comprises an air inlet pipe and an air outlet pipe, and a bend pipe is symmetrically arranged in the middle of the air inlet pipe, and the air inlet pipe is connected to the air outlet pipe through the two bend pipes, and the side wall of the air outlet pipe is fixedly connected to an air outlet component.

[0006] Furthermore, the air outlet pipe is fixedly connected to the bottom of the air inlet pipe, the air inlet pipe, the air outlet pipe and the elbow are connected in one piece, and both ends of the air outlet pipe are open.

[0007] Furthermore, both ends of the air inlet pipe are provided with air collecting hoppers, and the ends of the air inlet pipe are connected to the fan unit through the air collecting hoppers.

[0008] Furthermore, the air outlet assembly includes a connecting pipe, the connecting pipe is fixedly connected to the side wall of the air outlet pipe, and one end of the connecting pipe is fixedly connected to a cone bucket.

[0009] Furthermore, one end of the cone bucket is fixedly connected to a wind hood, and one side of the wind hood is provided with equidistantly distributed grilles.

[0010] Furthermore, an air fan is provided inside the air hood near the end of the air outlet pipe, and the number of air hoods equipped with air fans accounts for one quarter to one third of the total number of air hoods.

[0011] Compared with the prior art, the beneficial effect of the present invention is that the fan unit pumps the air outside the loess tunnel into the inside of the air inlet pipe, the air flows along the air inlet pipe, and the air flowing to the middle of the air inlet pipe enters the middle of the air outlet pipe along the bend pipe, and then flows from the middle of the air outlet pipe to the end of the air outlet pipe. This ventilation method will cause the air to be discharged from the middle of the tunnel first and gradually discharged to the end of the tunnel, so that the middle of the tunnel will have sufficient air circulation and improve the ventilation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 It is a top view of the utility model;

[0014] Figure 3 For this utility model Figure 2 Sectional view of the AA plane;

[0015] Figure 4 For this utility model Figure 2 Cross-sectional view of the middle BB plane.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0017] 1. Ventilation duct; 11. Air inlet duct; 12. Air outlet duct; 13. Elbow pipe; 14. Air collecting scoop; 2. Fan unit; 3. Air outlet assembly; 31. Connecting pipe; 32. Cone scoop; 33. Air hood; 34. Air fan; 35. Grille. DETAILED DESCRIPTION

[0018] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0019] like Figure 1-3 As shown, a loess tunnel ventilation device includes a ventilation pipe 1 and a fan group 2. There are two fan groups 2, and the two fan groups 2 are respectively connected to the two ends of the ventilation pipe 1. The ventilation pipe 1 includes an air inlet pipe 11 and an air outlet pipe 12. Bend pipes 13 are symmetrically arranged in the middle of the air inlet pipe 11. The air inlet pipe 11 is connected to the air outlet pipe 12 through the two bend pipes 13. The side wall of the air outlet pipe 12 is fixedly connected to the air outlet component 3.

[0020] According to the above structure, when in use, the air outside the loess tunnel is pumped into the interior of the air inlet pipe 11 through the fan unit 2, and the air flows along the air inlet pipe 11. The air flowing to the middle of the air inlet pipe 11 enters the middle of the air outlet pipe 12 along the bend 13, and then flows from the middle of the air outlet pipe 12 to the end of the air outlet pipe 12. This ventilation method will cause the air to be discharged from the middle of the tunnel first and gradually discharged to the end of the tunnel, so that the middle of the tunnel will get sufficient air circulation and improve the ventilation effect.

[0021] like Figure 2 and 3 As shown, the air outlet pipe 12 is fixedly connected to the bottom of the air inlet pipe 11, the air inlet pipe 11, the air outlet pipe 12 and the elbow 13 are connected in one piece, both ends of the air outlet pipe 12 are open, and both ends of the air inlet pipe 11 are provided with air collecting scoops 14, and the end of the air inlet pipe 11 is connected to the fan unit 2 through the air collecting scoops 14.

[0022] According to the above structure, the integrated structure of the air inlet pipe 11, the air outlet pipe 12 and the bend pipe 13 is easy to produce, and the end of the air inlet pipe 11 is connected to the fan unit 2 through the air collecting hopper 14, so that more air can enter the interior of the air inlet pipe 11.

[0023] like Figure 2 and 3 As shown, the air outlet assembly 3 includes a connecting pipe 31, which is fixedly connected to the side wall of the air outlet pipe 12. One end of the connecting pipe 31 is fixedly connected to a cone hopper 32, and one end of the cone hopper 32 is fixedly connected to a wind cover 33. One side of the wind cover 33 is provided with equidistantly distributed grilles 35.

[0024] According to the above structure, air enters the interior of the air outlet pipe 12 and is ejected outward through the connecting pipe 31. The air passes through the cone hopper 32 and enters the wind cover 33. Then, the air is ejected through the guidance of the grille 35 at the end of the wind cover 33, thereby achieving the ventilation effect for the tunnel.

[0025] like Figure 2 and 3 As shown, an air fan 34 is provided inside the air cover 33 near the end of the air outlet pipe 12 , and the number of the air covers 33 equipped with the air fan 34 accounts for one quarter to one third of the total number of the air covers 33 .

[0026] According to the above structure, the air flowing into the outlet pipe 12 flows out from the outlet assembly 3 in the middle of the outlet pipe 12, and the air flow rate gradually decreases. After the air reaches the end of the outlet pipe 12, the air pressure and flow rate are lost. At this time, the air fan 34 inside the wind cover 33 is started to absorb the air at the end of the outlet pipe 12 into the tunnel, thereby improving the ventilation effect at the end of the tunnel.

[0027] The working principle of the utility model is as follows: when in use, the air outside the loess tunnel is pumped into the interior of the air inlet pipe 11 through the fan unit 2, and the air flows along the air inlet pipe 11. The air flowing to the middle of the air inlet pipe 11 enters the middle of the air outlet pipe 12 along the bend pipe 13, and then flows from the middle of the air outlet pipe 12 to the end of the air outlet pipe 12. This ventilation method will cause the air to be discharged from the middle of the tunnel first and then gradually discharged to the end of the tunnel. In this way, the middle of the tunnel will get sufficient air circulation, improve the ventilation effect, and the air entering the inner of the air outlet pipe 12 will be The air is then ejected outwards through the connecting pipe 31, and the air passes through the cone hopper 32 into the wind hood 33, and is then ejected through the guidance of the grille 35 at the end of the wind hood 33, thereby ventilating the tunnel. The air flowing into the outlet pipe 12 flows out from the air outlet assembly 3 in the middle of the outlet pipe 12, and the air flow rate gradually decreases. After the air reaches the end of the outlet pipe 12, the air pressure and flow rate are lost. At this time, by starting the air fan 34 inside the wind hood 33, the air at the end of the outlet pipe 12 is sucked into the tunnel, thereby improving the ventilation effect at the end of the tunnel.

[0028] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A loess tunnel ventilation device, comprising a ventilation pipe (1) and a fan unit (2), characterized in that: There are two fan units (2), and the two fan units (2) are respectively connected to the two ends of the ventilation pipe (1). The ventilation pipe (1) includes an air inlet pipe (11) and an air outlet pipe (12). A bend pipe (13) is symmetrically provided in the middle of the air inlet pipe (11). The air inlet pipe (11) is connected to the air outlet pipe (12) through the two bend pipes (13). The side wall of the air outlet pipe (12) is fixedly connected to an air outlet assembly (3).

2. The loess tunnel ventilation device according to claim 1, characterized in that: The air outlet pipe (12) is fixedly connected to the bottom of the air inlet pipe (11); the air inlet pipe (11), the air outlet pipe (12) and the bent pipe (13) are integrally connected; and both ends of the air outlet pipe (12) are open.

3. The loess tunnel ventilation device according to claim 2, characterized in that: Both ends of the air inlet pipe (11) are provided with air collecting hoppers (14), and the ends of the air inlet pipe (11) are connected to the fan unit (2) through the air collecting hoppers (14).

4. The loess tunnel ventilation device according to claim 3, characterized in that: The air outlet assembly (3) comprises a connecting pipe (31), wherein the connecting pipe (31) is fixedly connected to the side wall of the air outlet pipe (12), and one end of the connecting pipe (31) is fixedly connected to a cone bucket (32).

5. The loess tunnel ventilation device according to claim 4, characterized in that: One end of the cone bucket (32) is fixedly connected to a wind hood (33), and one side of the wind hood (33) is provided with equally spaced grids (35).

6. The loess tunnel ventilation device according to claim 5, characterized in that: An air fan (34) is provided inside the wind cover (33) near the end of the air outlet pipe (12), and the number of wind covers (33) equipped with the air fan (34) accounts for one quarter to one third of the total number of wind covers (33).

Images