CN210483779U

CN210483779U - Ventilation unit for tunnel engineering

Info

Publication number: CN210483779U
Application number: CN201921312849.7U
Authority: CN
Inventors: 银乐利
Original assignee: Guizhou Zhongjiao Tonghuai Expressway Co ltd
Current assignee: Guizhou Zhongjiao Tonghuai Expressway Co ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-05-08
Anticipated expiration: 2029-08-14

Abstract

The utility model relates to the field of tunnel ventilation equipment, and discloses a ventilation device for tunnel engineering, which comprises a tunnel wall body, a ventilation pipe, a water delivery pipe, a spray bar and an exhaust port; a first fan is arranged inside the right end of the ventilation pipe, a plurality of groups of air cavities are arranged inside the ventilation pipe at equal intervals, butterfly valves are arranged at the right end of the air cavities, a second fan is arranged inside the left end of the air cavities, the left end of the second fan is upwards communicated with a group of smoke pipelines, the middle part of each air cavity is downwards communicated with an exhaust pipe in an L-shaped structure, and the bottom end of each exhaust pipe is located at the inner top of the tunnel wall and is leftwards communicated with an exhaust port; the upper part of the right end of the water pipe is provided with a water tank, one side of the water tank is communicated to the water pipe through a sewer pipe, a spraying pipe vertically penetrates through the middle part of the air cavity, and the top end of the spraying pipe is communicated to the water pipe. The utility model has the advantages that: the ventilation and fire extinguishing device are interdependent and interactive, and the ventilation in the tunnel is kept, and meanwhile, good safety guarantee is achieved.

Description

Ventilation unit for tunnel engineering

Technical Field

The utility model relates to a tunnel ventilation equipment field specifically is a ventilation unit for tunnel engineering.

Background

Common ventilation modes of the tunnel mainly include natural ventilation and longitudinal ventilation, wherein the natural ventilation means that harmful gases and smoke dust are removed from the tunnel through the action of a piston of an automobile passing through the tunnel and the action of natural wind. The natural ventilation mode is limited by the traffic flow in the tunnel, the instability and complexity of natural wind can greatly influence the airflow exchange in the tunnel, and some safety measures in the tunnel, such as the arrangement of a fire extinguishing device, can be improved while the interior of the tunnel is ventilated.

Chinese patent (publication No. CN 204002888U, publication No. 2014.12.10) provides a novel tunnel ventilation device. The tunnel ventilation device comprises a tunnel and ventilators arranged at the top of the tunnel, ventilation shafts are respectively arranged on the sides of the entrance end and the exit end of the tunnel, the ventilators are provided with a plurality of groups, the multiple groups of ventilators are longitudinally distributed at the top of the tunnel, ventilation holes are formed between the two groups of ventilators at the top of the tunnel, ventilation pipes leading to the outside are arranged at the positions of the ventilation holes, and air blowers are arranged at the positions of the ventilation holes. The utility model discloses a simple structure ventilates to tunnel inside through shaft, ventilation blower and air-blower. However, generally, vehicle accidents often occur in tunnels, and the fire caused by the accidents often occurs in the tunnels, and because the tunnels are far away from cities, firefighters cannot timely arrive and deal with the accidents, corresponding fire extinguishing devices are required to be arranged in the tunnels, while fire is extinguished in the tunnels, ventilation in the tunnels is maintained at any time, and the safety of vehicle personnel in the tunnels is prevented from being affected due to the fact that air does not flow.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ventilation unit for tunnel engineering to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a ventilation device for tunnel engineering comprises a tunnel wall, a ventilation pipe, a water delivery pipe, a spraying row and an exhaust port; tunnel wall body and ventilation pipe are laid underground side by side from top to bottom in tunnel wall body's inside and the two transversely passes whole tunnel wall body, support through the pillar between displacement ventilation pipe and the raceway both ends, and the right-hand member portion of ventilation pipe upwards communicates has the air intake, and the inside first fan that is provided with of right-hand member of ventilation pipe can accelerate the air in the external world and enter into the ventilation pipe through starting first fan. A plurality of groups of air cavities are arranged in the ventilation pipe at equal intervals, and the height of each air cavity is smaller than the inner diameter of the ventilation pipe so as not to block air from flowing backwards. The butterfly valve has been seted up to the right-hand member in wind chamber, the inside second fan that is provided with of left end in wind chamber, the left end of second fan upwards communicates and has a set of smog pipeline, the outside of tunnel wall body is stretched out to the end of smog pipeline, the middle part downward intercommunication in wind chamber has the blast pipe that is L type structure, the bottom of blast pipe is located tunnel wall body's interior top and communicates left and have the gas vent, can input the inside wind chamber of ventilation pipe through the butterfly valve, then flow into in the blast pipe again, and then carry to tunnel wall body's inside through the gas vent, thereby play the effect of ventilation. When the inside of the tunnel wall body that is located the gas vent below conflagration breaing out, through closing the butterfly valve that is located the gas vent top for the inside air of ventilation pipe can't enter into the wind chamber, then starts the left second fan in wind chamber and breathes in, then inhales the wind chamber through the gas vent with the smog of the conflagration production of its below, then the outside of tunnel wall body is exported to the rethread smog pipeline. The smoke removing treatment is carried out on the position where fire occurs under the condition that the exhaust port does not influence the ventilation of other positions by arranging the second fan and the smoke pipeline.

The right-hand member upper portion of raceway is provided with the water tank, one side of water tank communicates on the raceway through the downcomer, the vertical spraying pipe that has passed in middle part that is located the wind chamber, the middle part of spraying pipe is provided with the solenoid valve, the top of spraying pipe communicates on the raceway, the bottom of spraying pipe is passed and is sprayed the interior top of arranging the stretching out tunnel wall body, and the intercommunication has a set of spraying row that is circular structure, when spraying row's below position conflagration emergence, input the intraduct water of water conveying pipe to spraying row through the solenoid valve on opening the spraying pipe, then water to the fire of its below and go out. The second fan is arranged to absorb smoke and spray, discharge and spray water, so that fire safety can be guaranteed to be treated, and the ventilation effect inside the tunnel wall body is not affected.

As a further aspect of the present invention: the top of air intake sets up to the arc network structure of upwards jack-up, also can prevent when induced drafting that external impurity from entering into the inside of ventilation pipe.

As a further aspect of the present invention: the sewer pipe is provided with an electromagnetic valve for controlling the water flow in the sewer pipe.

As a further aspect of the present invention: the inner side of the butterfly valve is communicated with a one-way valve, and the one-way valve is arranged to prevent gas from flowing backwards.

As a further aspect of the present invention: one side of the top of the water tank is communicated with a rainwater receiving disc, and rainwater is received through the rainwater receiving disc and then stored for use. The top of rainwater flange is provided with a set of inside sunken filter screen, and the filter screen also can filter it when promoting the water receiving, prevents that impurity from entering into in the water tank.

Compared with the prior art, the beneficial effects of the utility model are that: the second fan and the smoke pipeline are arranged to remove smoke at the position where a fire disaster occurs under the condition that ventilation at other positions is not influenced at the exhaust port; the second fan is arranged to absorb smoke and spray, discharge and spray water, so that fire safety can be guaranteed to be treated, and the ventilation effect inside the tunnel wall body is not affected.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a ventilation device for tunnel engineering.

Fig. 2 is a schematic view of a partial connection structure of a ventilation pipe and a water pipe in a ventilation device for tunnel engineering.

Fig. 3 is a schematic structural view of a second embodiment of a ventilation device for tunnel engineering.

Wherein: the device comprises a tunnel wall 10, a ventilating pipe 11, a water conveying pipe 12, a water tank 13, a sewer pipe 14, an electromagnetic valve 15, a support 16, a first fan 17, an air inlet 18, an air cavity 19, a one-way valve 20, a second fan 21, a butterfly valve 22, a spraying pipe 23, a spraying row 24, an exhaust pipe 25, an exhaust port 26, a smoke pipeline 27, a rainwater receiving disc 28 and a filter screen 29.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example one

Referring to fig. 1-2, a ventilation device for tunnel engineering includes a tunnel wall 10, a ventilation pipe 11, a water pipe 12, a spray bar 24 and an exhaust port 26; tunnel wall 10 and ventilation pipe 11 are buried in tunnel wall 10's inside from top to bottom side by side and the two transversely pass whole tunnel wall 10, support through pillar 16 between displacement ventilation pipe 11 and the raceway 12 both ends, and the right-hand member portion of ventilation pipe 11 upwards communicates has air intake 18, and the top of air intake 18 sets up to the arc network structure of jack-up that makes progress, also can prevent external impurity to enter into the inside of ventilation pipe 11 when induced drafting. The inside first fan 17 that is provided with of the right-hand member of ventilation pipe 11 can accelerate the outside air to get into ventilation pipe 11 through starting first fan 17. A plurality of groups of air cavities 19 are arranged in the ventilation pipe 11 at equal intervals, and the height of the air cavities 19 is smaller than the inner diameter of the ventilation pipe 11 so as not to block the air from flowing backwards. Butterfly valve 22 has been seted up to the right-hand member in wind chamber 19, butterfly valve 22's inboard intercommunication has check valve 20, check valve 20's setting prevents gaseous refluence, the inside second fan 21 that is provided with in left end in wind chamber 19, the left end of second fan 21 upwards communicates has a set of smog pipeline 27, the outside that tunnel wall 10 was stretched out to the end of smog pipeline 27, the middle part downward intercommunication in wind chamber 19 has blast pipe 25 that is L type structure, the bottom of blast pipe 25 is located tunnel wall 10's interior top and communicates left there is gas vent 26, can input the wind chamber 19 with the inside wind of ventilation pipe 11 through butterfly valve 22, then flow in blast pipe 25 again, and then carry to tunnel wall 10's inside through gas vent 26, thereby play the effect of ventilating. When a fire breaks out in the interior of the tunnel wall 10 below the exhaust port 26, the butterfly valve 22 above the exhaust port 26 is closed, so that air in the ventilation pipe 11 cannot enter the air chamber 19, then the second fan 21 on the left side of the air chamber 19 is started to suck air, smoke generated by the fire below the ventilation pipe is sucked into the air chamber 19 through the exhaust port 26, and then the smoke is output to the outside of the tunnel wall 10 through the smoke pipeline 27. By providing the second fan 21 and the smoke duct 27, smoke is removed from a location where a fire has occurred without affecting ventilation at other locations at the exhaust port 26.

A water tank 13 is arranged at the upper part of the right end of the water conveying pipe 12, one side of the water tank 13 is communicated with the water conveying pipe 12 through a sewer pipe 14, and an electromagnetic valve 15 for controlling the water flow in the sewer pipe 14 is arranged on the sewer pipe 14. The vertical shower 23 that has passed in the middle part that is located wind chamber 19, the middle part of shower 23 is provided with solenoid valve 15, the top of shower 23 communicates on raceway 12, the bottom of shower 23 passes sprays row 24 and stretches out the interior top of tunnel wall 10 to the intercommunication has a set of spray row 24 that is circular structure, when the position of spraying row 24 below breaks out a fire, input the inside water of raceway 12 to spray row 24 through opening solenoid valve 15 on shower 23, then water to the fire of its below. The second fan 21 is arranged to absorb smoke and the spray row 24 is arranged to spray water, so that safe fire treatment can be guaranteed, and the ventilation effect inside the tunnel wall 10 is not affected.

The utility model discloses a theory of operation is: the outside air is firstly sucked into the ventilation pipe 11 by starting the first fan 17, then the butterfly valve 22 at the right side of each group of air cavities 19 is opened to enable the air to enter the air cavities 19, and then the air is input into the exhaust pipe 25 and then is discharged outwards through the exhaust port 26, so that the ventilation effect inside the tunnel wall 10 is promoted. When a fire breaks out in the interior of the tunnel wall 10 below the exhaust port 26, the butterfly valve 22 above the exhaust port 26 is closed, so that air in the ventilation pipe 11 cannot enter the air cavity 19, then the second fan 21 on the left side of the air cavity 19 is started to suck air, smoke generated by the fire below the ventilation pipe is sucked into the air cavity 19 through the exhaust port 26 and then is output to the outer side of the tunnel wall 10 through the smoke pipeline 27, meanwhile, water in the water conveying pipe 12 is input into the spray row 24 by opening the electromagnetic valve 15 on the spray pipe 23, and then the fire below the water conveying pipe is extinguished. The second fan 21 is arranged to absorb smoke and the spraying row 24 is arranged to spray water, so that safe treatment of fire can be guaranteed.

Example two

Referring to fig. 3, on the basis of the first embodiment, a rainwater receiving tray 28 is communicated with one side of the top of the water tank 13, and the rainwater is received by the rainwater receiving tray 28 and then stored for use. The top of rainwater flange 28 is provided with a set of filter screen 29 that inwards caves in, and filter screen 29 is when promoting the water receiving, also can filter it, prevents that impurity from entering into water tank 13.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A ventilation device for tunnel engineering comprises a tunnel wall body (10), a ventilation pipe (11), a water delivery pipe (12), a spraying row (24) and an exhaust port (26); the tunnel wall body (10) and the ventilation pipe (11) are embedded in the tunnel wall body (10) in parallel from top to bottom and penetrate through the whole tunnel wall body (10) in the transverse direction, the two ends of the displacement ventilation pipe (11) and the water delivery pipe (12) are supported through a strut (16), the right end of the ventilation pipe (11) is upwards communicated with an air inlet (18), a first fan (17) is arranged inside the right end of the ventilation pipe (11), a plurality of groups of air cavities (19) are arranged inside the ventilation pipe (11) at equal intervals, the height of each air cavity (19) is smaller than the inner diameter of the ventilation pipe (11), a butterfly valve (22) is arranged at the right end of each air cavity (19), a second fan (21) is arranged inside the left end of each air cavity (19), a group of smoke pipelines (27) are upwards communicated with the left end of each second fan (21), and the tail ends of the smoke pipelines (27) extend out of the, the middle part of the air cavity (19) is downwards communicated with an exhaust pipe (25) in an L-shaped structure, the bottom end of the exhaust pipe (25) is positioned at the inner top of the tunnel wall body (10) and is leftwards communicated with an exhaust port (26); the upper portion of the right end of the water conveying pipe (12) is provided with a water tank (13), one side of the water tank (13) is communicated to the water conveying pipe (12) through a sewer pipe (14), a spraying pipe (23) vertically penetrates through the middle portion of the air cavity (19), the top end of the spraying pipe (23) is communicated to the water conveying pipe (12), the bottom end of the spraying pipe (23) penetrates through the spraying row (24) and extends out of the inner top of the tunnel wall body (10), and the spraying pipe (24) is communicated with a group of spraying rows (24) in a circular structure.

2. A ventilating device for tunnel engineering according to claim 1, wherein the top of the air inlet (18) is provided as an upwardly-raised arc-shaped net structure.

3. A ventilation device for tunnel engineering according to claim 2, characterized in that the solenoid valves (15) are arranged in the middle of the spraying pipe (23) and on the sewer pipe (14).

4. A ventilation device for tunnel engineering according to claim 3, characterized in that the inner side of the butterfly valve (22) is connected with a one-way valve (20).

5. A ventilation device for tunnel engineering according to any one of claims 1-4, characterized in that a rainwater receiving tray (28) is communicated with one side of the top of the water tank (13).

6. A ventilation device for tunnel engineering according to claim 5, characterized in that the top of the rain water receiving pan (28) is provided with a set of inwardly recessed screens (29).