CN207609440U - A device for dust removal, ventilation and purification of tunnels based on smoke concentration - Google Patents

Abstract

The device of tunnel dedusting ventilation cleaning based on dust concentration, including the dust concentration detector being arranged on tunnel side wall and wind pipe, side is provided with the first cable trough in tunnel, and the other side is provided with the second cable trough, and is both provided with slab culvert above the first cable trough and the second cable trough；It is provided with atomization babinet in first cable trough, atomising device is provided in atomization box body, the air intake device for purifying air in tunnel is provided in the second cable trough, air intake device is connected with the transverse drain in tunnel.The device can reach continual ventilation effect for a long time in the process of running, and the big present situation of the particle concentration in improvement tunnel improves the air quality in tunnel.The noise that the device generates in the process of running is small, reduces the influence to staff in tunnel, increases the comfort of driving.

Description

A device for dust removal, ventilation and purification of tunnels based on smoke concentration

technical field

The utility model relates to the technical field of tunnel ventilation, in particular to a device for dust removal, ventilation and purification of tunnels based on smoke concentration.

Background technique

With the successful convening of the 19th National Congress of the Communist Party of China, the country's requirements for the service level of transportation infrastructure have been further improved, and it is bound to vigorously develop underground space projects. As an important control project of transportation infrastructure, tunnels will face the challenge of ventilation during operation. The exhaust gas emitted by cars contains many harmful components, such as carbon monoxide, smoke, nitrogen oxides, lead, sulfur dioxide, phosphides, etc. , is a mixture of gaseous and floating solid particles. The tunnel is a closed space, generally only the entrance and exit are connected to the atmosphere, and pollutants cannot diffuse quickly, so the concentration of polluted air in the tunnel will gradually accumulate. These harmful gases have a stimulating effect on the respiratory tract, and when the concentration is too high, the human body will produce different degrees of poisoning symptoms. Particulate matter in the air can also cause lung disease and affect driving vision.

At present, the ventilation of tunnels is basically achieved by installing large jet fans, which discharge polluted air and particles out of the tunnel. But if the tunnel length is long, the air inside can only move a limited distance even if the jet fans are activated at the same time. The effect of tunnel ventilation is very unsatisfactory, especially the discharge of particulate matter. Therefore, it is very urgent and necessary to propose tunnel ventilation technology to ensure the safety of tunnel operation.

Utility model content

The purpose of this utility model is to provide a tunnel dust removal, ventilation and purification device based on smoke concentration, which is used to solve the problems of poor ventilation effect, endangering the health of personnel in the tunnel and affecting driving safety existing in the existing ventilation device.

In order to achieve the above object, the utility model adopts the following technical solutions:

The device for dust removal, ventilation and purification of tunnels based on smoke concentration includes an air outlet duct arranged on the side wall of the tunnel, a first cable groove is arranged on one side of the tunnel, a second cable groove is arranged on the other side, and the first cable groove and the second cable groove are arranged on the other side of the tunnel. The top of the second cable trough is provided with a cover culvert; the first cable trough is equipped with an atomizing box, the two ends of the atomizing box are connected with the air outlet pipe, the atomizing box is equipped with an atomizing device, and the second cable trough A suction device for purifying the air in the tunnel is arranged inside, and the suction device is connected with the horizontal drainage pipe in the tunnel.

The further improvement of the utility model is that the suction device includes a suction box, an adsorption device and a plurality of suction fans, the top of the suction box is open, and a plurality of suction fans are installed on the inner wall of the suction box. The wind fan makes the polluted air in the tunnel enter the suction box. The adsorption device is installed in the suction box and is located at the end of the suction box. The adsorption device is connected to the horizontal drain pipe of the tunnel. The air sucked by the suction fan passes through the adsorption device. After purification, it flows out of the tunnel through the horizontal drain.

The further improvement of the utility model is that a protective cover is arranged above each suction fan.

The further improvement of the utility model is that the side wall of the second cable trough is provided with a cable trough air intake hole, and the cover culvert above the second cable trough is provided with a number of air intake holes.

The further improvement of the utility model is that the adsorption device is connected with the horizontal drainage pipe of the tunnel, and a water spray nozzle is installed above the adsorption device.

The further improvement of the utility model is that both ends of the atomizing box are connected with the air outlet pipe through the pressurized pipe.

The further improvement of the utility model is that an air outlet hole is arranged every 2m on the air outlet pipe, and is located at the bottom of the air outlet pipe; the air outlet hole is circular.

The further improvement of the utility model is that it also includes a smoke and dust concentration detector arranged on the side wall of the tunnel, and the smoke and dust concentration detector is located above the air outlet duct.

The further improvement of the utility model is that the top of the atomization box is open, the bottom of the atomization box is provided with several ultrasonic spray heads, one side of the atomization box is provided with tunnel fire-fighting pipes, and several ultrasonic spray heads are connected with the tunnel fire-fighting pipes through connecting pipes .

The further improvement of the utility model is that a booster device is arranged in the atomization box, and the booster device is connected with the booster pipeline; one end of the fire-fighting pipeline is connected with the booster device, and the booster device is also connected with an exhaust pipeline.

Compared with the prior art, the utility model has beneficial effects: the utility model arranges an atomizing box in the first cable trough in the tunnel, and an atomizing device is arranged in the atomizing box, and in the second cable trough Set up a suction device, the wet and cold air discharged from the atomization box reaches the bottom of the tunnel and meets the hot polluted air generated by the vehicle to generate convection, and makes the dust and exhaust brought up by the vehicle contact with the wet and cold air, and is sucked by the other side of the tunnel The wind device absorbs and flows out of the tunnel along the drain pipe, making the air in the tunnel fresh, purifying the air in the tunnel, and ensuring the health of people in the tunnel. The device can achieve a long-term uninterrupted ventilation effect during operation, improve the current situation of high particle concentration in the tunnel, and improve the air quality in the tunnel. The device generates little noise during operation, reduces the impact on people in the tunnel, and increases driving comfort.

Furthermore, since one end of the fire-fighting pipeline is connected to the supercharging device, and the supercharging device is also connected to an exhaust pipe, when a fire occurs, the supercharging device can directly pressurize the water in the fire-fighting pipeline and enter the exhaust pipe to carry out tunnel fire extinguishing. , to ensure the safety of personnel in the tunnel.

Further, the side wall of the second cable trough is provided with a cable trough air intake hole, and the cover culvert is provided with a number of air suction holes, which is beneficial to increase the air intake area and improve the purification effect.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a layout diagram of the air outlet duct;

Fig. 3 is a top view of the internal structure of the atomization box;

Fig. 4 is a side view of the internal structure of the atomization box;

Fig. 5 is a schematic diagram of opening several air intake holes on the cover culvert;

Fig. 6 is a perspective view of the side of the suction device.

In the figure: 1-tunnel, 2-atomization box, 3-pressurization pipe, 4-air outlet, 5-air outlet pipe, 6-first cable tray, 7-cover culvert, 8-smoke concentration detection Instrument, 9-cable trough intake hole, 10-cover plate culvert intake hole, 11-suction device, 12-horizontal drain pipe, 13-longitudinal drain pipe, 14-ultrasonic atomizing nozzle, 15-fire pipe, 16 - Inner wall of atomizing box, 17 - Connecting pipe, 18 - Booster device, 19 - High frequency vibrator, 20 - Suction fan, 21 - Protective cover, 22 - Suction box, 23 - Adsorption device, 24 - Second cable channel.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 1-Fig. 6, one side of the tunnel 1 in the utility model is provided with a first cable groove 6, and the other side is provided with a second cable groove 24, and the first cable groove 6 and the second cable groove 24 Cover culverts 7 are arranged above. The tunnel 1 is provided with a tunnel fire-fighting pipe 15 , a horizontal drainage pipe 12 and a vertical drainage pipe 13 .

The device for dust removal, ventilation and purification of tunnels based on smoke concentration provided by the utility model includes a smoke concentration detector 8 and an air outlet duct 5 arranged on the side wall of the tunnel 1, and the smoke concentration detector 8 is located above the outlet duct 5. The first The atomizing box 2 is arranged in the cable trough 6, and the air suction device 11 is arranged in the second cable trough 24. As shown in FIG.

As shown in Figure 6, the suction device 11 includes a suction box body 22, a protective cover 21, an adsorption device 23 and a plurality of suction fans 20. The top of the suction box 22 is open, and a plurality of suction fans 20 are arranged on the inner wall of the suction box 22. A protective cover 21 is arranged above each suction fan 20 for filtering particulate pollutants in the air. The wind fan 20 makes the polluted air in the tunnel 1 enter the air suction box 22 . The adsorption device 23 is installed in the suction box 22 and is located at the end of the suction box 22. The adsorption device 23 is connected to the horizontal drain pipe 12 of the tunnel. The gas sucked by the suction fan 20 is purified by the adsorption device 23 and then passes through the horizontal Drain pipe 12 flows out of the tunnel.

The second cable trough 24 side walls are provided with a cable trough air intake 9, and the cover plate culvert 7 above the second cable trough 24 is provided with a cover plate culvert air intake 10, which is conducive to increasing the air intake area and improving the purification effect .

A water spray nozzle is installed above the adsorption device 23, and the water spray nozzle can regularly clean the adsorption device 23. The polluted air sucked in gathers on the wall surface of the adsorption device 23, and finally the water droplets and fine dust are mixed. Tunnel transverse drain pipe 12 flows out.

As shown in FIG. 2 , half of the space along the length direction in the first cable groove 6 is used for placing the atomizing box 2 . Both ends of the atomizing box 2 are connected to the air outlet duct 5 through the booster duct 3 . A circular air outlet hole 4 is arranged every 2m on the air outlet duct 5, and is located at the bottom of the air outlet duct 5, and the air is discharged downward. The inner wall 16 of the atomizing box is made of a steel plate, and the surface of the steel plate is waterproofed to protect the first cable duct 6 from water vapor erosion. The air outlet pipe 5 and the booster pipe 3 are all made of PVC pipes.

As shown in Figure 3, the top opening of the atomization box body 2 is provided with an atomization device in the atomization box body 2, and the atomization device is an existing device, including a water tank, a water inlet pipe, a high frequency vibrator 19 and several An ultrasonic atomizing nozzle 14, the water spray pipe, high-frequency electronic oscillation circuit and ultrasonic atomizing nozzle 14 are placed at the bottom of the atomizing box 2; several ultrasonic spraying heads 14 are located at the bottom of the atomizing box 2, and the atomizing box One side of the body 2 is provided with a tunnel fire-fighting pipeline 15, and several connecting pipes 17 are arranged on the tunnel fire-fighting pipeline 15. One end of each connecting pipe 17 is connected with the tunnel fire-fighting pipeline 15, and the other end is connected with the ultrasonic spray nozzle 14, and the ultrasonic atomizing nozzle 14 The water inside is sent in by the fire-fighting pipeline 15 through the connecting pipe 17, and the ultrasonic spraying fog head 14 discharges into the atomizing box body 2 after atomizing the water, and the ultrasonic spraying heads 14 are arranged at intervals. The smoke and dust concentration detector 8 is installed in the middle of the tunnel arch waist, and the number and power of the ultrasonic atomizing nozzles 14 are controlled by the data obtained by the smoke and dust concentration detector 8, so as to achieve the purpose of energy saving.

The utility model controls the exhaust volume of the atomization box installed on one side of the tunnel through the smoke concentration detector 8, and discharges low-temperature mist to combine with polluted air and particulate matter. Through the suction device installed on the other side of the tunnel, the mixture of mist, polluted air and particulate matter is sucked into the suction device, and then the adsorption device in the suction device sprays the mixture of mist, polluted air and particulate matter into liquid form , discharged out of the tunnel through the drainage pipe.

As shown in Fig. 4, a booster device 18 is arranged in the atomization box 2, and the booster device 18 is connected with the booster pipeline 3, and the mist in the atomization box 2 is boosted by the booster device 18 and then passed through the booster pipeline. 3 into the air outlet duct 5.

In addition, one end of the fire-fighting pipeline 15 is connected with a supercharging device 18, and the supercharging device 18 is also connected with an exhaust pipe. When a fire occurs, the supercharging device 18 can directly pressurize the water in the fire-fighting pipeline 15 and enter the exhaust pipe. Extinguish tunnel fires.

The horizontal drainage pipe 12 in the tunnel is connected with the vertical drainage pipe 13 .

Compared with the prior art, the utility model has some advantages as follows:

(1) The device can achieve a long-term uninterrupted ventilation effect during operation, improve the current situation of high particle concentration in the tunnel, and improve the air quality in the tunnel.

(2) When a fire breaks out in the tunnel, the air outlet on the exhaust pipe can be used as a fire sprinkler, and water can be delivered from the fire pipe to extinguish the fire to ensure the safety of personnel in the tunnel.

(3) The device generates little noise during operation, reduces the impact on personnel in the tunnel, and increases driving comfort.

The above descriptions are only preferred embodiments of the utility model, and are 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 principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. the device of the tunnel dedusting ventilation cleaning based on dust concentration, which is characterized in that including being arranged on tunnel (1) abutment wall Wind pipe (5), tunnel (1) interior side is provided with the first cable trough (6), and the other side is provided with the second cable trough (24), and And first is both provided with slab culvert (7) above cable trough (6) and the second cable trough (24)；It is provided with mist in first cable trough (6) Change babinet (2), atomization babinet (2) both ends are connected with wind pipe (5), and atomising device, the second electricity are provided in atomization babinet (2) The air intake device (11) for purifying air in tunnel, air intake device (11) and the lateral row in tunnel are provided in cable slot (24) Water pipe (12) is connected.

2. the device of the tunnel dedusting ventilation cleaning according to claim 1 based on dust concentration, which is characterized in that air draught Device (11) includes air draught babinet (22), adsorbent equipment (23) and multiple induced draught fans (20), is opened at the top of air draught babinet (22) Mouthful, multiple induced draught fans (20) are mounted on air draught babinet (22) inner wall, and multiple induced draught fans (20) make the pollution in tunnel (1) Air enters in air draught babinet (22), and adsorbent equipment (23) is installed in air draught babinet (22), and is located at air draught babinet (22) End, adsorbent equipment (23) is connected with tunnel lateral direction drainpipe (12), and the gas of induced draught fan (20) inspiration is through adsorbent equipment (23) it is flowed out outside tunnel by transverse drain (12) after purifying.

3. the device of the tunnel dedusting ventilation cleaning according to claim 2 based on dust concentration, which is characterized in that each It is provided with protective cover (21) above induced draught fan (20).

4. the device of the tunnel dedusting ventilation cleaning according to claim 1 based on dust concentration, which is characterized in that second Cable trough air admission hole (9) is offered on cable trough (24) side wall, the slab culvert (7) above the second cable trough (24) if on offer Dry air admission hole.

5. the device of the tunnel dedusting ventilation cleaning according to claim 1 based on dust concentration, which is characterized in that absorption Device (23) is connected with the transverse drain (12) in tunnel, and adsorbent equipment is equipped with sprinkler head above (23).

6. the device of the tunnel dedusting ventilation cleaning according to claim 1 based on dust concentration, which is characterized in that atomization The both ends of babinet (2) are connected by pressure pipeline (3) with wind pipe (5).

7. the device of the tunnel dedusting ventilation cleaning according to claim 1 based on dust concentration, which is characterized in that outlet air One exhaust vent (4) is set every 2m on pipeline (5), and positioned at the bottom of wind pipe (5)；Exhaust vent (4) is circle.

8. the device of the tunnel dedusting ventilation cleaning according to claim 1 based on dust concentration, which is characterized in that also wrap The dust concentration detector (8) being arranged on tunnel (1) abutment wall is included, dust concentration detector (8) is located on wind pipe (5) Side.

9. the device of the tunnel dedusting ventilation cleaning according to claim 1 based on dust concentration, which is characterized in that atomization Babinet (2) open top, atomization babinet (2) interior bottom are provided with several ultrasonic atomization heads (14), and atomization babinet (2) side is set Tunnel fire protection pipeline (15) is set, several ultrasonic atomization heads (14) are connected with tunnel fire protection pipeline (15) by connecting tube (17).

10. the device of the tunnel dedusting ventilation cleaning according to claim 1 based on dust concentration, which is characterized in that mist Change in babinet (2) and be additionally provided with supercharging device (18), supercharging device (18) is connected with pressure pipeline (3)；Fire protection pipeline (15) one End is connect with supercharging device (18), and supercharging device (18) is also associated with discharge duct.