Jet fan for tunnel and ventilation system

Abstract

The utility model provides a jet fan for a tunnel and a ventilation system, a concentration detection part is detachably mounted in a to-be-detected area in the tunnel, and the concentration detection part is suitable for detecting the pollutant concentration of the to-be-detected area; the jet fan comprises a shell installed on the top wall in the tunnel; the fan is mounted in the shell; the control part is arranged on the shell, is respectively connected with the fan and the concentration detection part through data interfaces, and is used for receiving the pollutant concentration data sent by the concentration detection part and controlling the output power of the fan so as to control the output air volume and the output air pressure of the fan; and the monitoring part is arranged on the shell, is respectively connected with the fan and the control part through data interfaces, and is suitable for collecting the output power of the fan and transmitting the output power to the control part.

Description

TECHNICAL FIELD

[0001] The at least one embodiment of the utility model relates to tunnel ventilation device technical field, concretely relates to a kind of for the jet fan of tunnel and ventilation system. BACKGROUND

[0002] With the increasing scale of highway traffic construction, especially the construction of long tunnels and super-long tunnels is increasing. In the semi-closed tunnel, the construction of longer distance makes it easier for vehicles to accumulate pollutants when driving, leading to a decrease in air quality and visibility in the tunnel, affecting the safe operation of the tunnel.

[0003] To solve the above problems, in the prior art, a jet fan is usually installed inside the tunnel to accelerate the airflow inside the tunnel and reduce the concentration of pollutants inside the tunnel.

[0004] However, the internal environment of the tunnel is complex, and the spatiotemporal distribution of pollutant concentration is affected by various factors such as traffic flow and vehicle type. The existing jet fan for tunnels usually relies on a remote control platform to control the working conditions of the jet fan, which is limited by signal transmission quality. In harsh weather or remote areas, the remote control platform and the jet fan inside the tunnel often have communication interruptions, making it impossible to control the jet fan in real time. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a jet fan for tunnel to realize real-time control of the jet fan inside the tunnel.

[0006] According to the embodiment of the utility model, a jet fan for tunnel is provided, and a concentration detection part is detachably installed in the detection area inside the tunnel, which is suitable for detecting the pollutant concentration of the detection area. The jet fan comprises: a shell installed on the top wall inside the tunnel; a fan installed inside the shell; a control part installed on the shell, connected with the fan and the concentration detection part through a data interface, receiving the pollutant concentration data emitted by the concentration detection part, controlling the output power of the fan to control the output air volume and output air pressure of the fan; and a monitoring part installed on the shell, connected with the fan and the control part through a data interface, suitable for collecting the output power of the fan and transmitting it to the control part.

[0007] According to the embodiment of the utility model, the control part includes: an instruction unit connected with the concentration detection part through a data interface, suitable for receiving the pollutant concentration data sent by the concentration detection part to form corresponding adjustment instructions; and a control unit connected with the instruction unit and the motor of the fan through data interfaces, suitable for receiving the adjustment instructions of the instruction unit and controlling the rotating speed of the motor.

[0008] According to the embodiment of the utility model, the monitoring part is a rotating speed sensor connected with the motor of the fan and the control unit through data interfaces, suitable for detecting the rotating speed of the motor and transmitting to the control unit.

[0009] According to the embodiment of the utility model, a first accommodating groove is formed on the outer wall of the shell, and the control part and the monitoring part are installed inside the first accommodating groove; a dust cover is detachably arranged above the first accommodating groove to shield the control part and the monitoring part.

[0010] According to the embodiment of the utility model, a second accommodating groove is formed on the inner wall of the shell, and the control part and the monitoring part are installed inside the second accommodating groove, and the depth of the second accommodating groove in the height direction is greater than the length of the control part and the monitoring part in the height direction, so as to avoid that the control part and the monitoring part hinder the airflow flowing inside the shell.

[0011] According to the embodiment of the utility model, a plurality of data ports are arranged on the control part, and a plurality of data lines with different lengths for connecting with the concentration detection part are respectively installed on the plurality of data ports, suitable for adjusting the installation position of the concentration detection part inside the tunnel.

[0012] According to the embodiment of the utility model, the instruction unit is one of an ARM single-chip microcomputer and an MCU micro control unit, and the control unit is a voltage regulator.

[0013] According to the embodiment of the utility model, a ventilation system for a tunnel is provided, which comprises the jet fan for a tunnel in the above embodiment, the range of the jet fan is divided into a first area S1, a second area S2 and a third area S3 according to the distance from the air outlet of the jet fan; and a plurality of concentration detection parts are detachably installed in the detection area inside the tunnel and located inside the first area S1, the second area S2 and the third area S3 respectively, and the plurality of concentration detection parts are connected with the jet fan through data interfaces respectively.

[0014] According to the embodiment of the utility model, the concentration detection part is detachably installed on the inner wall of the tunnel through the mounting bracket, the mounting bracket comprises: a substantially U-shaped frame, two mounting holes are arranged on the bottom in the transverse direction, one side of the frame opening allows the concentration detection part to extend in, and an adhesive block is arranged, the first side of the adhesive block is provided with adhesive, which is suitable for being bonded with the inner wall of the tunnel, the second side of the adhesive block opposite to the first side is formed with two insertion rods respectively matched with the two mounting holes, so that the adhesive block is detachably connected with the frame.

[0015] According to the embodiment of the utility model, the concentration detection part is one of CO concentration sensor, CO2 concentration sensor, NO2 concentration sensor and SO2 concentration sensor.

[0016] According to the above embodiment of the utility model for the tunnel of the jet fan, the control part is installed on the shell, connected with the fan and the concentration detection part through the data interface, receives the pollutant concentration data sent by the concentration detection part, controls the output power of the fan, controls the output air volume and the output air pressure of the fan, so as to realize the field and real-time control of the jet fan in the tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the perspective view of the shell of the jet fan for tunnel of the embodiment of the utility model;

[0018] Figure 2 It is the sectional view of the jet fan for tunnel of the embodiment of the utility model;

[0019] Figure 3 It is the top view of the jet fan for tunnel of the embodiment of the utility model;

[0020] Figure 4 It is the sectional view of the shell of the jet fan for tunnel of the embodiment of the utility model along the axial direction;

[0021] Figure 5 It is the installation schematic view between the instruction unit, the concentration detection part and the tunnel of the jet fan for tunnel of the embodiment of the utility model; and

[0022] Figure 6 It is the installation schematic view between the concentration detection part, the mounting bracket and the tunnel of the ventilation system for tunnel of the embodiment of the utility model.

[0023] In the drawing:

[0024] 1 - shell;11 - first containing groove;12 - second containing groove;

[0025] 2 - fan;21 - motor;

[0026] 3-control unit; 31-instruction unit; 32-control unit; 33-data port; 34-data line;

[0027] 4-monitoring unit; 41-rotational speed sensor;

[0028] 5-dust cover;

[0029] 6-mounting bracket;

[0030] 61-frame; 611-mounting hole;

[0031] 62-adhesive block; 621-first side; 622-second side;

[0032] 63-insertion rod;

[0033] 7-tunnel;

[0034] 8-concentration detection unit. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be combined with specific embodiments, and referring to the drawings, make further detailed description of the utility model.

[0036] According to the inventive concept of one aspect of the utility model, a kind of jet fan for tunnel is provided, and the concentration detection unit is detachably installed in the area to be detected inside tunnel, suitable for detecting the pollutant concentration of area to be detected;Jet fan includes: shell, is installed on the top wall inside tunnel;Fan, is installed inside shell;Control unit, is installed on shell, is connected with fan and concentration detection unit respectively by data interface, receives the pollutant concentration data emitted by concentration detection unit, controls the output power of fan, to control the output air volume and output air pressure of fan;And monitoring unit, is installed on shell, is connected with fan and control unit respectively by data interface, suitable for collecting the output power of fan, and transmission to control unit.

[0037] Figure 1 It is the shell of the jet fan for tunnel of the embodiment of the utility model, and it is the three-dimensional schematic view of the embodiment of the utility model; Figure 2 It is the jet fan for tunnel of the embodiment of the utility model, and it is the sectional view of the embodiment of the utility model.

[0038] According to the exemplary embodiment of the utility model, please refer to Figures 1-2The utility model provides a kind of for tunnel's fluidic fan. The concentration detection part 8 is detachably installed in the area to be detected inside the tunnel 7, suitable for detecting the pollutant concentration of the area to be detected. The fluidic fan includes shell 1, fan 2, control part 3 and monitoring part 4. Shell 1 is installed on the top wall inside the tunnel 7. Fan 2 is installed inside shell 1. Control part 3 is installed on shell 1, connected with fan 2 and concentration detection part 8 respectively through data interface, receives the pollutant concentration data emitted by concentration detection part 8, controls the output power of fan 2 to control the output air volume and output air pressure of fan 2. Monitoring part 4 is installed on shell 1, connected with fan 2 and control part 3 respectively through data interface, suitable for collecting the output power of fan 2 and transmitting to control part 3.

[0039] In the embodiment, by installing control part 3 on shell 1, connecting with fan 2 and concentration detection part 8 respectively through data interface, receiving the pollutant concentration data emitted by concentration detection part 8, controlling the output power of fan 2 to control the output air volume and output air pressure of fan 2, the fluidic fan inside the tunnel 7 is controlled in situ and in real time. The fluidic fan of the utility model embodiment overcomes the technical defects that the existing fluidic fan for tunnel usually relies on remote control platform to control the working condition of fluidic fan, which is limited by signal transmission quality, and in severe weather or remote areas, the communication between remote control platform and fluidic fan inside the tunnel is often interrupted, and real-time control of fluidic fan cannot be realized. In addition, the fluidic fan of the utility model embodiment realizes improving energy efficiency and reducing operation and maintenance cost while ensuring the air quality inside the tunnel 7.

[0040] It should be noted that, in the embodiment, the fluidic fan plays a role in inducing and boosting the airflow inside the tunnel 7.

[0041] Further, in the embodiment, the data interface can be RS485 data interface or CAN data interface.

[0042] In some exemplary embodiments, with reference to Figure 2 The control part 3 includes instruction unit 31 and control unit 32. Instruction unit 31 is connected with concentration detection part 8 through data interface, suitable for receiving the pollutant concentration data emitted by concentration detection part 8 to form corresponding adjustment instruction. Control unit 32 is connected with instruction unit 31 and motor 21 of fan 2 respectively through data interface, suitable for receiving the adjustment instruction of instruction unit 31 and controlling the rotating speed of motor 21.

[0043] Through the above setting mode, the instruction unit 31 and the control unit 32 are installed on the shell 1, the instruction unit 31 receives the pollutant concentration of the to-be-detected area in the tunnel 7 sent by the concentration detection part 8, forms a corresponding adjustment instruction, and further, the control unit 32 receives the adjustment instruction of the instruction unit 31, controls the rotating speed of the motor 21, so as to control the output power of the fan 2, thereby controlling the output air volume and the output air pressure of the fan 2.

[0044] It should be noted that in the embodiment, the instruction unit 31 receives the pollutant concentration of the to-be-detected area of the concentration detection part 8, and forms a corresponding adjustment instruction according to a preset threshold value in the instruction unit 31 itself.

[0045] In some example embodiments, with reference to Figure 2 , the monitoring part 4 is a rotating speed sensor 41, which is connected with the motor 21 of the fan 2 and the control unit 32 through data interfaces respectively, and is suitable for detecting the rotating speed of the motor 21 and transmitting to the control unit 32.

[0046] In the embodiment, the monitoring part 4 is set as the rotating speed sensor 41, and the rotating speed sensor 41 is electrically connected with the motor 21 of the fan 2 and the control unit 32 through data interfaces respectively, so as to detect the rotating speed of the motor 21 and transmit the rotating speed value of the motor 21 to the control unit 32, so as to feedback the result of the control unit 32 controlling the rotating speed of the motor 21.

[0047] Figure 3 It is a top view of the jet fan for a tunnel of the embodiment of the utility model.

[0048] In some example embodiments, with reference to Figures 2-3 , the first accommodating groove 11 is formed on the outer wall of the shell 1, and the control part 3 and the monitoring part 4 are installed in the first accommodating groove 11. The dust cover 5 is detachably arranged above the first accommodating groove 11 to shield the control part 3 and the monitoring part 4.

[0049] In the embodiment, the first accommodating groove 11 is formed on the outer wall of the shell 1 to provide an accommodating space for the control part 3 and the monitoring part 4, so as to integrate the control part 3 and the monitoring part 4 on the shell 1, realize the on-site control of the output power of the fan 2, reduce the communication transmission distance between the control part 3 and the fan 2, and connect the control part 3 and the fan 2 through data interfaces, so as to ensure the stable communication between the control part 3 and the fan 2, and overcome the technical defects that the remote control platform and the jet fan in the tunnel cannot communicate and cannot control the jet fan in real time in severe weather or remote areas.

[0050] Further, a dust cover 5 is detachably arranged above the first accommodating groove 11, which plays a role of preventing dust from entering the control part 3 and the monitoring part 4, and preventing the control part 3 and the monitoring part 4 from being damaged by external force.

[0051] Figure 4 It is the cross-sectional view of the shell of the jet fan for tunnel in the embodiment of the utility model along the axial direction.

[0052] In some example embodiments, with reference to Figure 2 and Figure 4 , the second accommodating groove 12 is formed on the inner wall of the shell 1, the control part 3 and the monitoring part 4 are installed inside the second accommodating groove 12, and the depth of the second accommodating groove 12 in the height direction is greater than the length of the control part 3 and the monitoring part 4 in the height direction, so as to avoid the control part 3 and the monitoring part 4 from hindering the airflow in the shell 1.

[0053] Through the above embodiment, another embodiment is provided for the installation mode of the control part 3 and the monitoring part 4. The second accommodating groove 12 is formed on the inner wall of the shell 1, and the depth of the second accommodating groove 12 in the height direction is greater than the length of the control part 3 and the monitoring part 4 in the height direction, so as to provide installation space for the control part 3 and the monitoring part 4, and also avoid the control part 3 and the monitoring part 4 from hindering the airflow in the shell 1.

[0054] Figure 5 It is the installation schematic view between the instruction unit of the jet fan for tunnel, the concentration detection part and the tunnel in the embodiment of the utility model.

[0055] In some example embodiments, with reference to Figure 2 and Figure 5 , the control part 3 is provided with a plurality of data ports 33, and a plurality of data lines 34 with different lengths for connecting the concentration detection part 8 are respectively installed on the plurality of data ports 33, which are suitable for adjusting the installation position of the concentration detection part 8 in the tunnel 7.

[0056] In the embodiment, the plurality of data ports 33 are arranged on the control part 3, and the lengths of the data lines 34 installed on each data port 33 are different, so as to facilitate the installation of the concentration detection part 8 at different positions in the tunnel 7, thereby facilitating the detection of the pollutant concentration of different detection areas in the tunnel 7.

[0057] It should be noted that in the embodiment, the data line 34 is a flexible cable, which is convenient for bending and installing the data line 34.

[0058] In some example embodiments, the instruction unit 31 is one of an ARM single-chip microcomputer, an MCU micro control unit, and the control unit 32 is a voltage regulator.

[0059] It should be noted that in the present embodiment, the control unit 32 is a voltage regulator, which adjusts the input voltage of the motor 21 of the fan 2 to adjust the rotation speed of the motor 21, thereby adjusting the output power of the fan 2.

[0060] According to the example embodiments of the present application, please refer to Figure 2 , a ventilation system for a tunnel is provided, which comprises the jet fan for a tunnel described in the above embodiments and a plurality of concentration detection parts 8. The range of the jet fan is divided into a first area S1, a second area S2 and a third area S3 according to the distance from the air outlet of the jet fan. The plurality of concentration detection parts 8 are respectively detachably installed in the to-be-detected areas inside the tunnel 7, and are respectively located inside the first area S1, the second area S2 and the third area S3. The plurality of concentration detection parts 8 are respectively connected with the jet fan through a data interface.

[0061] In the present embodiment, by setting the ventilation system comprising the concentration detection part 8 and the jet fan for a tunnel described in the above embodiments, the output air volume and the output air pressure of the jet fan are controlled according to the pollutant concentration of the to-be-detected areas inside the tunnel 7, so as to realize real-time adjustment of the jet fan.

[0062] Further, in the present embodiment, by setting the plurality of concentration detection parts 8, and installing the plurality of concentration detection parts 8 in the first area S1, the second area S2 and the third area S3, the output air volume and the output air pressure of the jet fan are controlled according to the pollutant concentration of different areas of the range of the jet fan.

[0063] It should be noted that in the present embodiment, in the first area S1, the jet flow output by the jet fan exchanges momentum with the surrounding air, the jet flow rapidly diverges, and the main flow velocity of the jet flow decreases; in the second area S2, the flow velocity of the jet flow continues to decrease, and vortex backflow is generated at the bottom of the tunnel 7 in the vertical plane and the horizontal plane; in the third area S3, the outline area of the jet flow gradually expands, the flow velocity of the jet flow tends to be uniform, and the jet flow flows through the entire cross section of the tunnel 7. The concentration detection part 8 installed in the first area S1 is suitable for detecting the initial disturbance effect of the jet fan on the airflow inside the tunnel 7. The concentration detection part 8 installed in the second area S2 is suitable for detecting the pollutant aggregation in the vortex backflow formed inside the tunnel 7. The concentration detection part 8 installed in the third area S3 is suitable for detecting the diffusion and dilution effect of the pollutants at the far end of the range of the jet fan.

[0064] For example, the ventilation system further comprises a speed detector (not shown in the figure) adapted to detect the speed of the vehicle inside the tunnel 7, when the vehicle speed is about 20km / h, the exhaust emission of the vehicle is large, the concentration of pollutants inside the first area S1 and the second area S2 is high, at this time, the concentration value of pollutants detected by the concentration detector 8 arranged inside the first area S1 is taken as the control parameter, and the fan 2 is controlled to operate at 90%-100% of the operating power. When the vehicle speed is about 40km / h, the pollutants mainly gather in the second area S2, at this time, the concentration value of pollutants detected by the concentration detector 8 arranged inside the second area S2 is taken as the control parameter, and the fan 2 is controlled to operate at 70%-90% of the operating power. When the vehicle speed is about 60km / h, the diffusion of pollutants is enhanced, at this time, the concentration value of pollutants detected by the concentration detector 8 arranged inside the third area S3 is taken as the control parameter, and the fan 2 is controlled to operate at 50%-70% of the operating power. When the vehicle speed is about 80km / h, the pollutants diffuse to the end of the third area S3, at this time, the concentration value of pollutants detected by the concentration detector 8 arranged inside the third area S3 is taken as the control parameter, and the fan 2 is controlled to operate at 30%-50% of the operating power. In the above manner, the concentration of pollutants inside the tunnel 7 is reduced, and the energy consumption of the fan is reduced.

[0065] For example, the distance between two adjacent fans inside the tunnel 7 is 150m, the first area S1 is an area 0-30m away from the outlet of the fan, the second area S2 is an area 30-90m away from the outlet of the fan, the third area S3 is an area 90-150m away from the outlet of the fan, and the distance between the concentration detector 8 and the bottom of the tunnel 7 is 1.2-1.5m.

[0066] Figure 6 The installation schematic diagram between the concentration detector, the mounting bracket and the tunnel of the ventilation system for the tunnel in the embodiment of the utility model.

[0067] In some example embodiments, with reference to Figure 2 and Figure 6 The concentration detector 8 is detachably mounted on the inner wall of the tunnel 7 through the mounting bracket 6. The mounting bracket 6 comprises a substantially U-shaped frame 61 and an adhesive block 62. Two mounting holes 611 are arranged on the bottom of the substantially U-shaped frame 61 in the transverse direction, and the opening side of the frame 61 allows the concentration detector 8 to extend in. The first side 621 of the adhesive block 62 is provided with adhesive, which is adapted to be bonded with the inner wall of the tunnel 7, and the second side 622 of the adhesive block 62 opposite to the first side 621 is formed with two insertion rods 63 adapted to the two mounting holes 611, so that the adhesive block 62 is detachably connected with the frame 61.

[0068] In the embodiment, the concentration detecting part 8 can be clamped on one side of the opening of the frame 61, and is detachably connected through the insertion rod 63 on the adhesive block 62 and the mounting hole 611 of the frame 61, so as to adjust the installation position of the concentration detecting part 8 inside the tunnel 7 by replacing the adhesive block 62.

[0069] In some exemplary embodiments, the concentration detecting part 8 is one of a CO concentration sensor, a CO2 concentration sensor, a NO2 concentration sensor, and a SO2 concentration sensor.

[0070] Through the above setting mode, the concentration of different types of pollutants, such as CO, CO2, NO2, and SO2, inside the tunnel 7 can be detected according to actual needs, so as to adjust the output air volume and output air pressure of the jet fan according to the concentration of different types of pollutants.

[0071] It should be noted that the jet fan of the embodiment of the present application further comprises an alarm (not shown in the figure) and a temperature sensor (not shown in the figure). The alarm and the temperature sensor are installed on the shell 1. The temperature sensor is suitable for detecting the environmental temperature inside the shell 1. The alarm is suitable for triggering an alarm when the pollutant concentration of the area to be detected received by the control part 3 from the concentration detecting part 8 exceeds the preset pollutant concentration extreme value, or when the temperature sensor detects that the environmental temperature inside the shell 1 exceeds the preset temperature extreme value, and the monitoring part 4 monitors that the output power of the fan 2 is abnormal. At this time, measures such as increasing multiple jet fans should be taken in time to dredge the airflow inside the tunnel 7.

[0072] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only for specific embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A fluidic fan for a tunnel, characterized in that, The tunnel (7) inside the region to be detected is detachably mounted with a concentration detection part (8) suitable for detecting the concentration of pollutants in the region to be detected; the jet fan comprises: A shell (1) mounted on the top wall inside the tunnel (7); A fan (2) mounted inside the shell (1); A control part (3) mounted on the shell (1), connected with the fan (2) and the concentration detection part (8) respectively through data interfaces, receiving the concentration data of pollutants emitted by the concentration detection part (8), controlling the output power of the fan (2) to control the output air volume and output air pressure of the fan (2); and A monitoring part (4) mounted on the shell (1), connected with the fan (2) and the control part (3) respectively through data interfaces, suitable for collecting the output power of the fan (2) and transmitting to the control part (3).

2. The fluidic fan for a tunnel according to claim 1, characterized in that, The control part (3) comprises: An instruction unit (31) connected with the concentration detection part (8) through a data interface, suitable for receiving the concentration data of pollutants emitted by the concentration detection part (8) to form corresponding adjustment instructions; and A control unit (32) connected with the instruction unit (31) and the motor (21) of the fan (2) respectively through data interfaces, suitable for receiving the adjustment instructions of the instruction unit (31) and controlling the rotating speed of the motor (21).

3. The fluidic fan for a tunnel according to claim 2, characterized in that, The monitoring part (4) is a rotating speed sensor (41) connected with the motor (21) of the fan (2) and the control unit (32) respectively through data interfaces, suitable for detecting the rotating speed of the motor (21) and transmitting to the control unit (32).

4. The fluidic fan for a tunnel according to claim 1, characterized in that, A first accommodating groove (11) is formed on the outer wall of the shell (1), and the control part (3) and the monitoring part (4) are mounted inside the first accommodating groove (11); A dust cover (5) is detachably arranged above the first accommodating groove (11) to shield the control part (3) and the monitoring part (4).

5. The fluidic fan for a tunnel according to claim 1, characterized in that, A second accommodating groove (12) is formed on the inner wall of the shell (1), the control part (3) and the monitoring part (4) are mounted inside the second accommodating groove (12), and the depth of the second accommodating groove (12) in the height direction is greater than the length of the control part (3) and the monitoring part (4) in the height direction, so as to avoid that the control part (3) and the monitoring part (4) hinder the airflow flowing inside the shell (1).

6. The fluidic fan for a tunnel according to any one of claims 1-5, characterized in that, A plurality of data ports (33) are arranged on the control part (3), a plurality of data lines (34) with different lengths for connecting with the concentration detection part (8) are respectively mounted on the plurality of data ports (33), and the concentration detection part (8) is suitable for adjusting the installation position inside the tunnel (7).

7. The fluidic fan for a tunnel according to claim 2, characterized in that, The instruction unit (31) is one of an ARM single-chip microcomputer and an MCU micro control unit, and the control unit (32) is a voltage regulator.

8. A ventilation system for a tunnel, characterized in that Comprise: The jet fan for a tunnel according to any one of claims 1-7, wherein a range of the jet fan is divided into a first area S1, a second area S2 and a third area S3 according to a distance from an air outlet of the jet fan; and Furthermore A plurality of concentration detection units (8) are respectively detachably installed in a detection area inside the tunnel (7) and are respectively located inside the first area S1, the second area S2 and the third area S3, and the plurality of concentration detection units (8) are respectively connected with the jet fan through a data interface.

9. A ventilation system for a tunnel according to claim 8, characterized in that The concentration detection unit (8) is detachably installed on an inner wall of the tunnel (7) through a mounting bracket (6), and the mounting bracket (6) comprises: a substantially U-shaped frame (61) having two mounting holes (611) spaced apart in a transverse direction at a bottom portion, and an opening side of the frame (61) allowing the concentration detection unit (8) to extend in; and an adhesive block (62) having an adhesive glue installed on a first side (621) of the adhesive block (62) and being suitable for being bonded with the inner wall of the tunnel (7), and a second side (622) of the adhesive block (62) opposite to the first side (621) is formed with two insertion rods (63) respectively matched with the two mounting holes (611), so that the adhesive block (62) is detachably connected with the frame (61).

10. The vent system for a tunnel of claim 8, wherein, The concentration detection unit (8) is one of a CO concentration sensor, a CO2 concentration sensor, a NO2 concentration sensor and a SO2 concentration sensor.

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