Segmented ventilation device for long distance tunnels

Abstract

The application discloses a sectional ventilation device for long-distance tunnel, which comprises a ventilation mechanism, a tunnel air passing mechanism and a filtering and cleaning mechanism, wherein the ventilation mechanism is connected with the tunnel air passing mechanism, the ventilation mechanism is connected with the filtering and cleaning mechanism, the tunnel air passing mechanism is connected with the filtering and cleaning mechanism, the ventilation mechanism comprises a air supply device, an air exhaust device and a silencer, the air supply device comprises an air supply pipeline, an air supply cylinder, an air supply motor and an air supply impeller, the air exhaust device comprises an air exhaust pipeline, an air exhaust cylinder, an air exhaust motor and an air exhaust impeller, the air supply pipeline is arranged in a tunnel wall, the air supply pipeline and the air supply cylinder are connected through a pipeline, the air supply cylinder and an inner wall of the tunnel are fixedly connected, the air supply motor and an inner wall of the air supply cylinder are fixedly connected through a support frame, the air supply impeller and the air supply motor are transmissionally connected, and the air exhaust pipeline is arranged in the tunnel wall.

Description

Technical Field

[0001] This invention relates to the field of long-distance tunnel ventilation technology, specifically a segmented ventilation device for long-distance tunnels. Background Technology

[0002] Tunnels are structures built underground, in caves, or underwater to allow vehicles such as locomotives or cars to pass through. The construction of tunnels can provide convenient transportation channels, shorten travel distances, reduce travel time, improve traffic efficiency, and increase traffic safety.

[0003] Tunnels can be classified into short tunnels, medium tunnels, long tunnels, and extra-long tunnels according to their length. For short tunnels, air circulation can be achieved through natural ventilation. However, for longer tunnels, natural ventilation is insufficient due to their length. Therefore, segmented ventilation devices are designed for long-distance tunnels, which allow outside air to enter the tunnel through pipes and simultaneously exhaust air from the tunnel, thus achieving air circulation. However, there are still shortcomings. Both the incoming and outgoing air contain impurities, especially the air exhausted from the tunnel. Directly expelling the air may increase the environmental burden and is detrimental to environmental protection. Summary of the Invention

[0004] The purpose of this invention is to provide a segmented ventilation device for long-distance tunnels to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A segmented ventilation device for long-distance tunnels, the ventilation device comprising a ventilation mechanism, a tunnel ventilation mechanism, and a filtration and cleaning mechanism, wherein the ventilation mechanism and the tunnel ventilation mechanism are connected, the ventilation mechanism and the filtration and cleaning mechanism are connected, and the tunnel ventilation mechanism and the filtration and cleaning mechanism are connected.

[0006] In this ventilation system, the ventilation mechanism and the tunnel ventilation mechanism are fixed to the inner wall of the tunnel. The air supply duct and the exhaust duct are located inside the tunnel wall and are connected to the air supply duct and the exhaust duct respectively. They are used to supply outside air into the tunnel and to exhaust polluted air from the tunnel. The wind generated during vehicle movement is collected by the tunnel ventilation mechanism to generate electricity. At the same time, the filtration and cleaning mechanism filters the outside air, the polluted air discharged from the tunnel, and the air collected by the tunnel ventilation mechanism during vehicle movement to keep them in a relatively clean state.

[0007] Furthermore, the ventilation mechanism includes an air supply device, an exhaust device, and a silencer. The air supply device includes an air supply duct, an air supply cylinder, an air supply motor, and an air supply impeller. The exhaust device includes an exhaust duct, an exhaust cylinder, an exhaust motor, and an exhaust impeller. The air supply duct is placed inside the tunnel wall, and the air supply duct and the air supply cylinder are connected by a pipe. The air supply cylinder is fixedly connected to the inner wall of the tunnel. The air supply motor is fixedly connected to the inner wall of the air supply cylinder. The air supply impeller is driven by the air supply motor. The exhaust duct is placed inside the tunnel wall, and the exhaust duct and the exhaust cylinder are connected by a pipe. The exhaust cylinder is fixedly connected to the inner wall of the tunnel. The exhaust motor is fixedly connected to the inner wall of the exhaust cylinder. The exhaust impeller is driven by the exhaust motor. There are two silencers, and the two silencers are respectively fixedly connected to the inner walls of the air supply cylinder and the exhaust cylinder near the air supply impeller and the exhaust impeller.

[0008] The air supply duct and the exhaust duct are both open on one side. The opening of the air supply duct is at the end facing away from the traffic flow, and the opening of the exhaust duct is at the end facing the traffic flow. The air supply motor is located near the opening of the air supply duct, and the air supply impeller is connected to the air supply motor. The exhaust motor is located near the opening of the exhaust duct, and the exhaust impeller is located at the end of the exhaust motor near the opening of the exhaust duct.

[0009] In the ventilation system, the air supply device is used to transmit outside air into the tunnel, increasing the oxygen content inside the tunnel and reducing air pollution. The air supply duct is connected to the outside of the tunnel, and the air supply duct and the air supply pipe are connected by a pipe. When fresh outside air enters the air supply duct from the air supply duct, the air supply motor inside the air supply duct drives the air supply impeller to rotate, accelerating the discharge of fresh outside air into the tunnel. The exhaust device is used to discharge polluted air from the tunnel to the outside. The exhaust duct and the exhaust pipe are connected by a pipe, and the exhaust motor inside the exhaust duct drives the exhaust impeller to rotate, accelerating the absorption of polluted air in the tunnel, and then discharging it into the tunnel through the exhaust pipe. The silencer is fastened to the inner wall of the air supply duct and the exhaust duct to reduce the noise generated during the air supply and exhaust process.

[0010] Furthermore, the tunnel ventilation mechanism includes a tunnel ventilation duct, a ventilation impeller, a wind turbine, a pressure sensor, and a stop plate. The tunnel ventilation duct is fastened to the inner wall of the tunnel, the wind turbine is fastened to the tunnel ventilation duct via a support frame, the ventilation impeller is driven by the wind turbine, the stop plate is fastened to the inner wall of the tunnel ventilation duct, and the pressure sensor is fastened to the end of the stop plate near the wind turbine.

[0011] The tunnel ventilation duct has an open structure at both ends. The wind turbine is located at the end facing the traffic flow, and the air-passing impeller is located at the end of the wind turbine facing the traffic flow. The second filter screen is located inside the tunnel ventilation duct near the end of the wind turbine facing away from the traffic flow. The stop plate has an openable structure and is located between the wind turbine and the second filter screen. The distance from the stop plate to the second filter screen is shorter than the distance from the stop plate to the wind turbine.

[0012] In the tunnel ventilation system, the wind generated by a moving vehicle passes through the tunnel ventilation duct. The ventilation impeller inside the duct is driven to rotate by the wind. A wind turbine is connected to the ventilation impeller, and the rotation of the impeller powers the wind turbine to generate electricity. The generated electricity is used for the normal operation of the pressure sensor and to drive the opening and closing of the stop plate. After the wind passes through the ventilation impeller, it hits the stop plate, which is fastened with a pressure sensor. When the pressure sensor detects the wind, it transmits a signal to the motor, which drives the stop plate to open. When there are no vehicles in the tunnel, there is no wind generated by the vehicles, so the pressure sensor does not detect a pressure signal, and the stop plate is in the closed state.

[0013] Furthermore, the filtration and cleaning mechanism includes an impurity filter screen, a sewage pipe, a water pump, and a spray head. The impurity filter screen includes a first filter screen, a second filter screen, and a third filter screen. The first filter screen is placed inside the exhaust duct, the second filter screen is placed inside the tunnel ventilation duct, and the third filter screen is placed inside the tunnel ventilation duct. The sewage pipe connects the tunnel ventilation duct and the exhaust duct. The end of the sewage pipe near the air supply duct is securely connected to the inner wall of the tunnel and leads to the outside. The water pump is securely connected to the exhaust duct, and the water pump and the spray head are connected via a pipe. The spray head is placed inside the exhaust duct, with the nozzle of the spray head facing the side of the first filter screen away from the air supply motor. The first filter screen is located in the exhaust duct away from the exhaust motor. The lower end of the connection between the first filter screen and the exhaust duct has an opening. The lower opening of the exhaust duct is connected to the sewage pipe. The length of the tunnel ventilation duct is greater than that of the air supply duct. The air outlet of the air supply duct is connected to the tunnel ventilation duct. The connection between the air supply duct and the tunnel ventilation duct is located at the end of the second filter screen away from the stop plate. The third filter screen is located at the end of the tunnel ventilation duct.

[0014] In the filtration and cleaning mechanism, the first, second, and third filters are used to transport and exhaust air into and out of the tunnel, as well as remove impurities from the wind generated during vehicle movement. The first filter is securely connected to the inner wall of the exhaust duct. Before entering the exhaust duct, the air in the tunnel passes through the first filter after passing the exhaust impeller. An opening is located at the lower part of the connection between the first filter and the exhaust duct, connecting to a sewage pipe. Filtered impurities fall into the sewage pipe. Simultaneously, as impurities pass through the first filter, a water pump activates, spraying water through a pipe from a spray nozzle. The nozzles of the spray nozzles face the first filter, further dislodging impurities adhering to it. The water flow also carries impurities, facilitating their removal from the tunnel. The second filter, located inside the tunnel ventilation duct, filters the wind generated during vehicle movement. An opening is also located at the lower part of the connection between the second filter and the tunnel ventilation duct. To prevent impurities from falling off, a third filter is installed at the end of the tunnel ventilation duct, in the space between the second and third filters. The air outlet of the air supply duct is connected to the tunnel ventilation duct via a pipe. Outside air flows through the air supply duct into the tunnel ventilation duct. If the shut-off plate is closed, the second filter is not filtering, and the outside air can clean the second filter in reverse. If the shut-off plate is open, the outside air flows through the air supply duct into the tunnel ventilation duct and, together with the air generated by the passing vehicles after the first filtration, is filtered by the third filter. An opening is provided at the lower part of the connection between the third filter and the tunnel ventilation duct to facilitate the falling off of impurities. The sewage pipe connects the openings under the first, second, and third filters. Therefore, during the filtration process of the first filter, water can flow through the sewage pipe through the second and third filters, carrying away the impurities filtered by the second and third filters. The sewage pipe passes through the tunnel wall to the outside, allowing impurities to be discharged with the water flow.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: After startup, the exhaust device begins exhaust operation, and the exhaust motor drives the exhaust impeller to accelerate the exhaust of air from the tunnel. The air is filtered through the first filter screen. Simultaneously, a water pump starts, spraying water through pipes from spray nozzles. The nozzles of the spray nozzles face the first filter screen, further causing impurities attached to the first filter screen to fall into the drainage pipe. The water flow also carries impurities, facilitating their discharge from the tunnel. Simultaneously, the air supply device starts supplying air, and the air supply duct delivers outside air to the air supply duct. The air supply motor drives the air supply impeller to rotate and accelerate the air supply. The air outlet of the air supply duct is connected to the tunnel ventilation duct and is located between the second and third filters. The tunnel ventilation duct is used to collect and filter the air generated during vehicle movement. The wind turbine is driven to rotate by the wind. The wind turbine is connected to the wind turbine, and the rotation of the wind turbine generates electricity. The generated electricity is used for the normal operation of the pressure sensor and to drive the opening and closing of the cut-off plate. After the wind passes through the wind turbine, it hits the cut-off plate, on which the pressure sensor is fastened. When the pressure sensor detects the wind, it transmits a signal to the motor, which drives the cut-off plate to open. After being filtered by the second filter, the wind passes through the third filter along with the air in the air supply duct. When there are no vehicles in the tunnel, the pressure sensor will not detect any pressure signal, and the cut-off plate will be in the closed state. When the cut-off plate is closed, the air in the air supply duct can clean the second filter in reverse. The filtered and cleaned impurities fall through the lower opening of the filter into the sewage pipe and are discharged from the tunnel with the water flow. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 A magnified view of a portion of the view; Figure 3 This is a front view of the overall structure of the present invention; Figure 4 yes Figure 3 A partial zoom-in view (B) of the view; Figure 5 This is a schematic diagram of the air supply device of the present invention; Figure 6 This is a schematic diagram of the exhaust device structure of the present invention; Figure 7 This is a cross-sectional view of the ventilation device of the present invention; Figure 8 This is a schematic diagram of the tunnel ventilation mechanism of the present invention; Figure 9 This is a cross-sectional view of the tunnel ventilation mechanism of the present invention; In the diagram: 1-Ventilation mechanism, 11-Air supply device, 111-Air supply duct, 112-Air supply tube, 113-Air supply motor, 114-Air supply impeller, 12-Exhaust device, 121-Exhaust duct, 122-Exhaust tube, 123-Exhaust motor, 124-Exhaust impeller, 13-Silencer, 2-Tunnel ventilation mechanism, 21-Tunnel ventilation tube, 22-Ventilator impeller, 23-Wind turbine, 24-Pressure sensor, 25-Stop plate, 3-Filter cleaning mechanism, 31-Impurity filter screen, 311-First filter screen, 312-Second filter screen, 313-Third filter screen, 32-Sewage pipe, 33-Water pump, 34-Spray head. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The present invention provides the following technical solution: like Figures 1-4 As shown, a segmented ventilation device for long-distance tunnels includes a ventilation mechanism 1, a tunnel ventilation mechanism 2, and a filter cleaning mechanism 3. The ventilation mechanism 1 and the tunnel ventilation mechanism 2 are connected, the ventilation mechanism 1 and the filter cleaning mechanism 3 are connected, and the tunnel ventilation mechanism 2 and the filter cleaning mechanism 3 are connected.

[0019] In this ventilation device, the ventilation mechanism 1 and the tunnel ventilation mechanism 2 are fixed to the inner wall of the tunnel. The air supply duct 111 and the exhaust duct 121 are inside the tunnel wall and are connected to the air supply duct 112 and the exhaust duct 122 respectively through the ducts. They are used to transport outside air into the tunnel and to exhaust polluted air from the tunnel. The wind generated during the vehicle's movement is collected by the tunnel ventilation mechanism 2 to generate electricity. At the same time, the filtration and cleaning mechanism 3 filters the outside air, the polluted air discharged from the tunnel, and the air collected by the tunnel ventilation mechanism 2 during the vehicle's movement to keep them in a relatively clean state.

[0020] like Figures 5-7As shown, the ventilation system 1 includes an air supply device 11, an exhaust device 12, and a silencer 13. The air supply device 11 includes an air supply duct 111, an air supply duct 112, an air supply motor 113, and an air supply impeller 114. The exhaust device 12 includes an exhaust duct 121, an exhaust duct 122, an exhaust motor 123, and an exhaust impeller 124. The air supply duct 111 is placed inside the tunnel wall, and the air supply duct 111 and the air supply duct 112 are connected by a pipe. The air supply duct 112 is fastened to the inner wall of the tunnel. The air supply motor 113 and the air supply duct 124 are connected by a pipe. The inner wall of the ventilation duct 112 is fastened, the air supply impeller 114 and the air supply motor 113 are drivenly connected, the exhaust duct 121 is placed inside the tunnel wall, the exhaust duct 121 and the exhaust duct 122 are connected by a pipe, the exhaust duct 122 is fastened to the inner wall of the tunnel, the exhaust motor 123 is fastened to the inner wall of the exhaust duct 122, the exhaust impeller 124 and the exhaust motor 123 are drivenly connected, there are two silencers 13, and the two silencers 13 are fastened to the inner walls of the air supply duct 112 and the exhaust duct 122 near the impeller respectively.

[0021] The air supply duct 112 and the exhaust duct 122 are set with openings on one side. The opening of the air supply duct 112 is the end facing away from the traffic flow, and the opening of the exhaust duct 122 is the end facing the traffic flow. The air supply motor 113 is close to the opening of the air supply duct 112, and the air supply impeller 114 is connected to the air supply motor 113. The exhaust motor 123 is close to the opening of the exhaust duct 122, and the exhaust impeller 124 is set at the end of the exhaust motor 123 that is close to the opening of the exhaust duct 122.

[0022] In the ventilation system 1, the air supply device 11 is used to transmit outside air into the tunnel, increasing the oxygen content inside the tunnel and reducing air pollution. The air supply duct 111 is connected to the outside of the tunnel. The air supply duct 112 and the air supply duct 111 are connected by a pipe. When fresh outside air enters the air supply duct 112 from the air supply duct 111, the air supply motor 113 inside the air supply duct 112 drives the air supply impeller 114 to rotate, accelerating the discharge of fresh outside air into the tunnel. The exhaust device 12 is used to discharge the polluted air in the tunnel to the outside. The exhaust duct 122 and the exhaust pipe 121 are connected by a pipe. The exhaust motor 123 inside the exhaust duct 122 drives the exhaust impeller 124 to rotate, accelerating the absorption of polluted air in the tunnel, and then discharging it into the tunnel through the exhaust pipe 121. The silencer 13 is fastened to the inner wall of the air supply duct 112 and the exhaust duct 122 to reduce the noise generated during the air supply and exhaust process.

[0023] like Figures 8-9As shown, the tunnel ventilation mechanism 2 includes a tunnel ventilation duct 21, a ventilation impeller 22, a wind turbine generator 23, a pressure sensor 24, and a stop plate 25. The tunnel ventilation duct 21 is fastened to the inner wall of the tunnel. The wind turbine generator 23 is fastened to the tunnel ventilation duct 21 through a support frame. The ventilation impeller 22 is driven by the wind turbine generator 23. The stop plate 25 is fastened to the inner wall of the tunnel ventilation duct 21. The pressure sensor 24 is fastened to the end of the stop plate 25 near the wind turbine generator 23. 21 is an open structure at both ends. The wind turbine 23 is located at the end facing the traffic flow, and the wind turbine 22 is located at the end of the wind turbine 23 facing the traffic flow. The second filter 312 is located inside the tunnel ventilation duct 21 near the end of the wind turbine 23 facing away from the traffic flow. The stop plate 25 is an openable structure and is located between the wind turbine 23 and the second filter 312. The distance from the stop plate 25 to the second filter 312 is shorter than the distance from the stop plate 25 to the wind turbine 23.

[0024] In the tunnel ventilation mechanism 2, the wind generated by the car passing through the tunnel ventilation duct 21 causes the wind turbine 22 inside the tunnel ventilation duct 21 to rotate. The wind turbine 23 is connected to the wind turbine 22, and the wind turbine 23 generates electricity by rotating the wind turbine 22. The generated electricity is used for the normal operation of the pressure sensor 24 and to drive the opening and closing of the stop plate 25. After the wind passes through the wind turbine 22, it hits the stop plate 25. The pressure sensor 24 is fastened to the stop plate 25. When the pressure sensor 24 senses the wind, it transmits a signal to the motor, which drives the stop plate 25 to open. When there is no car in the tunnel, there is no wind generated by the car, so the pressure sensor 24 will not sense the pressure signal, and the stop plate 25 is in the closed state.

[0025] like Figure 7 , 9As shown, the filtration and cleaning mechanism 3 includes an impurity filter screen 31, a sewage pipe 32, a water pump 33, and a spray head 34. The impurity filter screen 31 includes a first filter screen 311, a second filter screen 312, and a third filter screen 313. The first filter screen 311 is placed inside the exhaust duct 122, the second filter screen 312 is placed inside the tunnel ventilation duct 21, and the third filter screen 313 is placed inside the tunnel ventilation duct 21. The sewage pipe 32 connects the tunnel ventilation duct 21 and the exhaust duct 122. One end of the sewage pipe 32 near the air supply duct 112 is securely connected to the inner wall of the tunnel and leads to the outside. The water pump 33 is securely connected to the exhaust duct 122, and the water pump 33 and the spray head 34 are connected through a pipe. The spray head 34 is placed inside the exhaust duct 122, with the nozzle of the spray head 34 facing the side of the first filter screen 311 away from the blower motor 113. The first filter screen 311 is located in the exhaust duct 122 away from the exhaust motor 123. The lower end of the connection between the first filter screen 311 and the exhaust duct 122 is open. The lower opening of the exhaust duct 122 is connected to the sewage pipe 32. The tunnel ventilation duct 21 is longer than the blower duct 112. The air outlet of the blower duct 112 is connected to the tunnel ventilation duct 21. The connection between the blower duct 112 and the tunnel ventilation duct 21 is located at the end of the second filter screen 312 away from the stop plate 25. The third filter screen 313 is located at the end of the tunnel ventilation duct 21.

[0026] In the filtration and cleaning mechanism 3, the first filter screen 311, the second filter screen 312, and the third filter screen 313 are used to transport and discharge air into and out of the tunnel, as well as remove impurities from the wind generated during vehicle movement. The first filter screen 311 is securely connected to the inner wall of the exhaust duct 122. After passing through the exhaust impeller 124, the air in the tunnel is filtered by the first filter screen 311 before entering the exhaust duct 121. An opening is provided at the lower part of the connection between the first filter screen 311 and the exhaust duct 122, and the opening is connected to the sewage pipe 32. When impurities are filtered, they fall into the sewage pipe 32. In pipe 32, as impurities pass through the first filter screen 311, the water pump 33 starts, spraying water through the pipe and out through the spray head 34. The nozzle of the spray head 34 is directed towards the first filter screen 311, which can further dislodge the impurities attached to the first filter screen 311. At the same time, because of the water flow, the water flow can carry the impurities forward, making it easier to discharge them into the tunnel. The second filter screen 312 is installed inside the tunnel ventilation duct 21, which can filter the air generated during vehicle movement. An opening is provided at the lower part of the connection between the second filter screen 312 and the tunnel ventilation duct 21 to facilitate the falling of impurities. The third filter screen 3... 13 is installed at the end of the tunnel ventilation duct 21. The air outlet of the air supply duct 112 is located in the space between the second filter screen 312 and the third filter screen 313. The air outlet of the air supply duct 112 is connected to the tunnel ventilation duct 21 through a pipe. Outside air flows through the air supply duct 112 into the tunnel ventilation duct 21. If the shut-off plate 25 is closed at this time, the second filter screen 312 does not filter, and the outside air can clean the second filter screen 312 in the reverse direction. If the shut-off plate 25 is open, the outside air flows through the air supply duct 112 into the tunnel ventilation duct 21 and then passes through the filtered air of vehicles. The generated air is filtered through the third filter screen 313. An opening is provided at the lower part of the connection between the third filter screen 313 and the tunnel ventilation duct 21 to facilitate the falling of impurities. The sewage pipe 32 connects the openings under the first filter screen 311, the second filter screen 312, and the third filter screen 313. Therefore, during the filtration process of the first filter screen 311, the water flow can pass through the second filter screen 312 and the third filter screen 313 along with the sewage pipe 32, carrying away the impurities filtered out by the second filter screen 312 and the third filter screen 313. The sewage pipe 32 passes through the tunnel wall to the outside, allowing the impurities to be discharged along with the water flow.

[0027] Working principle of the invention: After startup, the exhaust device 12 begins exhaust operation. The exhaust motor 123 drives the exhaust impeller 124 to accelerate the exhaust of air from the tunnel. The air is filtered through the first filter screen 311. Simultaneously, the water pump 33 starts, spraying water through the pipes from the spray head 34. The nozzles of the spray head 34 face the first filter screen 311, further causing impurities attached to the first filter screen 311 to fall into the sewage pipe 32. The water flow also carries impurities, facilitating their discharge from the tunnel. Simultaneously, the air supply device 11 begins supplying air. The air supply pipe 111 delivers outside air to the air supply duct 112. The air supply motor 113 drives the air supply impeller 114 to rotate and accelerate the air supply. The air outlet of the air supply duct 112 is connected to the tunnel ventilation duct 21, located between the second filter screen 312 and the third filter screen 313. The tunnel ventilation duct 21 collects and filters the air generated during vehicle movement. The air impeller 2... Driven by the wind, the wind turbine 23 is connected to the wind turbine 22. The wind turbine 23 generates electricity through the rotation of the wind turbine 22. The generated electricity is used for the normal operation of the pressure sensor 24 and to drive the opening and closing of the cut-off plate 25. After the wind passes through the wind turbine 22, it will hit the cut-off plate 25. The pressure sensor 24 is fastened to the cut-off plate 25. When the pressure sensor 24 senses the wind, it transmits the signal to the motor. The motor drives the cut-off plate 25 to open. After being filtered by the second filter screen 312, the wind passes through the third filter screen 313 together with the wind in the air supply duct 112. When there are no vehicles in the tunnel, there is no wind generated by the vehicles, so the pressure sensor 24 will not sense the pressure signal, and the cut-off plate 25 is in the closed state. When the cut-off plate 25 is in the closed state, the wind in the air supply duct 112 can clean the second filter screen 312 in the reverse direction. The filtered and cleaned impurities fall into the sewage pipe 32 through the lower opening of the filter screen and are discharged from the tunnel with the water flow.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A segmented ventilation device for long-distance tunnels, characterized in that: The ventilation device includes a ventilation mechanism (1), a tunnel ventilation mechanism (2), and a filter cleaning mechanism (3). The ventilation mechanism (1) and the tunnel ventilation mechanism (2) are connected. The ventilation mechanism (1) and the filter cleaning mechanism (3) are connected. The tunnel ventilation mechanism (2) and the filter cleaning mechanism (3) are connected. The tunnel ventilation mechanism (2) includes a tunnel ventilation duct (21), a ventilation impeller (22), a wind turbine (23), a pressure sensor (24), and a stop plate (25). The tunnel ventilation duct (21) is fastened to the inner wall of the tunnel. The wind turbine (23) and the tunnel ventilation duct (21) are fastened to each other by a support frame. The ventilation impeller (22) and the wind turbine (23) are connected by a drive. The stop plate (25) is fastened to the inner wall of the tunnel ventilation duct (21). The pressure sensor (24) and the end of the stop plate (25) near the wind turbine (23) are fastened to each other. The ventilation mechanism (1) includes an air supply device (11) and an exhaust device (12). The air supply device (11) includes an air supply duct (112), and the exhaust device (12) includes an exhaust duct (122) and an exhaust motor (123). The air supply duct (112) is fastened to the inner wall of the tunnel, the exhaust duct (122) is fastened to the inner wall of the tunnel, and the exhaust motor (123) is fastened to the inner wall of the exhaust duct (122). The filtration and cleaning mechanism (3) includes an impurity filter screen (31), a sewage pipe (32), a water pump (33), and a spray head (34). The impurity filter screen (31) includes a first filter screen (311), a second filter screen (312), and a third filter screen (313). The first filter screen (311) is placed inside the exhaust duct (122), the second filter screen (312) is placed inside the tunnel ventilation duct (21), and the third filter screen (313) is placed inside the tunnel ventilation duct (21). The sewage pipe (32) connects the tunnel ventilation duct (21) and the exhaust duct (122). The end of the sewage pipe (32) near the air supply duct (112) is fastened to the inner wall of the tunnel and leads to the outside. The water pump (33) is fastened to the exhaust duct (122). The water pump (33) and the spray head (34) are connected by a pipe. The spray head (34) is placed inside the exhaust duct (122). The nozzle of the spray head (34) faces the side of the first filter screen (311) away from the exhaust motor (123). The air outlet of the air supply duct (112) is connected to the tunnel ventilation duct (21). The connection between the air supply duct (112) and the tunnel ventilation duct (21) is located at the end of the second filter screen (312) away from the stop plate (25). The third filter screen (313) is located at the end of the tunnel ventilation duct (21).

2. The segmented ventilation device for long-distance tunnels according to claim 1, characterized in that: The ventilation mechanism (1) includes a silencer (13), the air supply device (11) includes an air supply duct (111), an air supply motor (113), and an air supply impeller (114), and the exhaust device (12) includes an exhaust duct (121) and an exhaust impeller (124). The air supply duct (111) is placed inside the tunnel wall, and the air supply duct (111) and the air supply cylinder (112) are connected by a pipe. The air supply motor (113) and the inner wall of the air supply cylinder (112) are fastened together. The air supply impeller (114) and the air supply motor (113) are connected by a drive. The exhaust duct (121) is placed inside the tunnel wall. The exhaust duct (121) and the exhaust pipe (122) are connected by a pipe. The exhaust impeller (124) and the exhaust motor (123) are connected by a drive. There are two silencers (13). The silencers (13) are fastened to the inner walls of the air supply pipe (112) and the exhaust pipe (122) near the air supply impeller (114) and the exhaust impeller (124), respectively.

3. A segmented ventilation device for long-distance tunnels according to claim 2, characterized in that: The air supply duct (112) and the exhaust duct (122) are both open on one side. The opening of the air supply duct (112) is at the end facing away from the traffic flow, and the opening of the exhaust duct (122) is at the end facing the traffic flow. The air supply motor (113) is located near the opening of the air supply duct (112). The air supply impeller (114) is connected to the air supply motor (113). The exhaust motor (123) is located near the opening of the exhaust duct (122). The exhaust impeller (124) is located at the end of the exhaust motor (123) near the opening of the exhaust duct (122).

4. A segmented ventilation device for long-distance tunnels according to claim 3, characterized in that: The first filter screen (311) is located away from the exhaust motor (123) in the exhaust duct (122). The lower end of the connection between the first filter screen (311) and the exhaust duct (122) is provided with an opening. The lower opening of the exhaust duct (122) is connected to the sewage pipe (32). The length of the tunnel ventilation duct (21) is greater than that of the air supply duct (112).

5. A segmented ventilation device for long-distance tunnels according to claim 4, characterized in that: The tunnel ventilation duct (21) has an open structure at both ends. The wind turbine (23) is located at the end facing the traffic flow. The wind turbine impeller (22) is located at the end of the wind turbine (23) facing the traffic flow. The second filter screen (312) is located inside the tunnel ventilation duct (21) near the end of the wind turbine (23) facing away from the traffic flow. The stop plate (25) has an openable structure. The stop plate (25) is located between the wind turbine (23) and the second filter screen (312). The distance from the stop plate (25) to the second filter screen (312) is shorter than the distance from the stop plate (25) to the wind turbine (23).

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