A tunnel circulation ventilation system

Abstract

A tunnel circulation ventilation system, wherein the exhaust valve controls the on-off connection between the confluence path and the main connecting path; the air supply valve controls the on-off connection between the confluence path and the air supply path; the main connecting path is connected to the first machine room through a transverse channel and the first branch path, the first machine room is provided with an exhaust fan, the second machine room is provided with an air supply fan, and the upper end of the air supply path is connected to the second machine room; the control unit includes a sensor, a controller, and a communicator; the sensor is located inside the tunnel, and the communicator transmits the signal obtained by the sensor to the controller; the controller controls the operation of the exhaust fan, the air supply fan, the exhaust valve, and the air supply valve through wireless communication.

Description

Technical Field

[0001] The present invention relates to the field of tunnel air treatment, and in particular to a tunnel circulation ventilation system. Background Art

[0002] During the construction and actual work of a tunnel or tunnel, there will be many situations where wind treatment is required inside the channel. For example, blasting during construction will cause a large amount of smoke and dust, which affects further construction and needs to be discharged as soon as possible. For example, when a hazardous gas leaks from a transport vehicle inside the channel, the hazardous gas cannot be discharged as quickly as in a normal open-air environment. Therefore, for the above two situations and similar situations, special methods or equipment are needed to perform wind treatment and wind control to discharge the hazardous gas or smoke as soon as possible, or to treat the hazardous gas or smoke.

[0003] In actual engineering practice, the following problems exist:

[0004] 1. Existing technologies for the treatment of smoke and dust include setting up a processing room above the mountain through which the tunnel passes. There is a fan in the room, which draws the smoke and dust out of the tunnel through a connecting channel. The connecting channel is directly connected to a valve for control, and the valve is opened for subsequent treatment. However, this will cause the smoke and dust that has not been preliminarily treated to pass directly through subsequent equipment. A small amount of sand, stones, leaves, impurities, etc. in the smoke and dust may affect the subsequent equipment.

[0005] Second, as mentioned above, the fan extracts the smoke and dust in the tunnel through the connecting channel. At this time, if a preliminary smoke and dust blocking structure such as a filter is designed, the large smoke and dust particles (such as a small amount of sand and gravel), leaves, impurities, etc. blocked by the filter will still remain in the connecting channel. This blocking is meaningless and the smoke and dust particles cannot be processed. Then there is no corresponding solution for the first step of processing and collecting the smoke and dust particles.

[0006] 3. As mentioned above, a filter is used to initially block the smoke and dust, and the filter is matched with the valve. The filter is cleaned by the brush on the gate when the gate is opened and closed. There are a few existing technologies for this technical solution, but the existing technology only considers the cleaning of the filter by the brush after the gate is opened and closed, without considering how to deal with the dirt on the bristles itself, nor considering that the filter is close to the gate, which will cause the accumulation of dirt near the gate, and how to deal with the dirt after it enters the gate storage cavity.

[0007] Fourth, as described above, large smoke and dust particles are processed and collected, but there is an unsolvable problem: there is a certain wind speed in the wind channel, and how to ensure that the collected smoke and dust particles are not blown away by the wind in the channel.

[0008] 5. As for the collection of large smoke and dust particles as mentioned above, there is no relevant technology on how to remove them after collection, or how to provide a device that is convenient for placement and removal.

[0009] 6. As described above, in the preliminary treatment, a preliminary treatment unit is provided with the aid of a branch passage, but the preliminary treatment unit is tilted, so there is a factor of unstable valve installation. Summary of the Invention

[0010] In order to overcome the above problems, the present invention proposes a solution to solve the above multiple problems at the same time.

[0011] The technical solution adopted by the present invention to solve its technical problem is: a tunnel circulation ventilation system, comprising a main connecting path, a branch connecting path, a confluence path, a transverse passage, a first branch path, a second branch path, a first machine room, a pretreatment unit, an exhaust valve, an air supply valve, an air supply fan, an air supply passage, an exhaust fan, a second machine room, and a control unit; the lower end of the branch connecting path is connected to the interior of the tunnel, and the upper end is connected to the confluence path, the exhaust valve controls the connection and disconnection between the confluence path and the main connecting path; the air supply valve controls the connection and disconnection between the confluence path and the air supply passage; the main connecting path is connected to the first machine room through the transverse passage and the first branch path, the first machine room is provided with an exhaust fan, the second machine room is provided with an air supply fan, and the upper end of the air supply passage is connected to the second machine room; the control unit comprises a sensor, a controller, and a communicator; the sensor is located inside the tunnel, and the communicator transmits a signal obtained by the sensor to the controller; the controller controls the operation of the exhaust fan, the air supply fan, the exhaust valve, and the air supply valve through wireless communication;

[0012] The pretreatment unit includes a plug, a collection chamber, a collection cylinder, a first baffle, a second baffle, a control valve, and a connecting pipe; an opening is provided on the peripheral wall of the collection cylinder, and a hanging ring is provided on the upper end of the collection cylinder; the control valve includes a driving part, a support plate, a supporting plate, a valve body, a bracket, a receiving chamber, a flow path, a valve plate, a driving shaft, a left valve seat, a right valve seat, a filter screen, a block, bristles, a scraper, and a block; the controller controls the operation of the control valve through wireless communication;

[0013] A plug is provided at the upper end of the main connecting path, a transverse channel is provided on the side of the main connecting path, and the downstream of the transverse channel branches into a first branch path inclined upward and a second branch path inclined downward; the control valve controls the on-off of the first branch path, and the control valve is connected to the connecting pipe to lead the fluid in the first branch path out of the first branch path; a first baffle and a second baffle are suspended on the upper part of the inner wall of the second branch path; the collecting chamber is provided downstream of the second branch path, the upper part of the collecting chamber is open, and the collecting cylinder is provided in the collecting chamber; the collecting cylinder can be taken out of the collecting chamber;

[0014] The cam is secured to the cam face and is designed to engage the cam face of the valve stem when the cam is in the upright position and the left end of the cam is secured to the cam face by the camshaft.

[0015] Preferably, the valve body and the bracket are formed integrally.

[0016] Preferably, the driving unit is a hydraulic driving unit.

[0017] Preferably, the support plate and the bracket are connected via a connecting piece.

[0018] Preferably, the drive shaft extends into the interior of the valve plate to achieve connection.

[0019] Preferably, the lower wall of the second branch road is inclined, and the lower wall of the transverse channel is inclined.

[0020] Preferably, the second baffle is located downstream of the first baffle.

[0021] Preferably, the length of the second baffle is greater than that of the first baffle.

[0022] Preferably, when the valve is installed in the first branch path, the filter screen is located in the first branch path.

[0023] Preferably, when the valve is installed in the first branch line, the inclined surface of the support plate is supported on the floor of the first machine room.

[0024] The beneficial effects of the present invention are:

[0025] 1. Regarding the first point raised in the background technology, a plug is provided at the upper end of the main connecting channel to block the main connecting channel, and the gas is guided to the first branch road and discharged to the machine room. The first branch road is inclined upward, and a control valve is provided on the first branch road. A filter is provided upstream of the control valve. The filter can block large particles in the smoke and dust. The large particles fall after being blocked, but they will not fall into the main connecting channel, thereby preventing the large particles from falling back into the tunnel and can be collected later.

[0026] 2. In response to the second point raised in the background technology, a second branch road intersecting with the first branch road is set up, and particles blocked from falling from the first branch road fall into the second branch road, and the second branch road tilts downward and falls into the collection chamber.

[0027] 3. Regarding the third point raised in the background technology, a blocking part is provided at the upper end of the valve seat on the left side of the valve. The blocking part will scrape against the bristles during the movement of the valve plate, thereby cleaning the bristles to a certain extent. A scraper block is provided at the upper end of the valve plate and a block is provided at the lower part. The scraper block blocks smoke and dust particles from entering the scraper block and can also scrape some particles entering the valve plate receiving cavity downwards. There is a gap between the blocking part and the valve plate for the particles to fall.

[0028] 4. In response to the fourth point raised in the background technology, a first baffle and a second baffle are provided on the upper wall of the second branch path, thereby blocking the wind to a certain extent and preventing the particles in the collection chamber from being blown back to a certain extent.

[0029] 5. In response to the fifth point raised in the background technology, a collecting tube is provided in the collecting chamber. The collecting tube has an opening and a hanging ring for lifting and taking out.

[0030] 6. Regarding the sixth point raised in the background technology, a support plate is provided at the upper end of the valve bracket, a support plate is provided on one side of the support plate, and one end of the support plate includes an inclined surface. The support plate can support the valve to provide stability.

[0031] Note: The above designs are not listed in any particular order, and each one makes the present invention distinctive and significantly advanced compared to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and examples.

[0033] Figure 1 This is the overall schematic diagram of the pretreatment unit of the present invention

[0034] Figure 2 This is a schematic diagram of the control valve of the present invention not installed upright and open

[0035] Figure 3 This is a schematic diagram of the control valve of the present invention not installed upright and closed

[0036] Figure 4 For the present invention Figure 3 Schematic diagram of the internal structure of the middle circle line

[0037] Figure 5 Schematic diagram of the circulating ventilation system of the present invention

[0038] Figure 6 This is the control principle diagram of the control module of the present invention

[0039] In the figures, the reference numerals are as follows:

[0040] 1. Machine room placement surface, 2. Main connecting road, 3. Plug, 4. Horizontal channel, 5. Inclined surface, 6. First branch road, 7. Second branch road, 8. Collection chamber, 9. Collection cylinder, 10. Opening, 11. First baffle, 12. Second baffle, 13. Hanging ring, 14. Control valve, 15. Connecting pipe, 16. Drive unit, 17. Support plate, 18. Support plate, 19. Valve body, 20. Bracket, 21. Storage chamber, 22. Flow path, 23. Valve plate, 24, drive shaft, 25, left valve seat, 26, right valve seat, 27, filter, 28, block, 29, brush, 30, scraper, 31, block, 32, gap, 33, mountain, 34, branch connection, 35, first machine room, 36, pretreatment unit, 37, exhaust valve, 38, air supply valve, 39, tunnel, 40, air supply fan, 41, air supply passage, 42, exhaust fan, 43, second machine room, 44, confluence DETAILED DESCRIPTION

[0041] As shown in the figure: a tunnel circulation ventilation system, including a main connecting path, a branch connecting path, a confluence path, a transverse passage, a first branch path, a second branch path, a first machine room, a pretreatment unit, an exhaust valve, an air supply valve, an air supply fan, an air supply passage, an exhaust fan, a second machine room, and a control unit; the lower end of the branch connecting path is connected to the interior of the tunnel, and the upper end is connected to the confluence path, the exhaust valve controls the on-off between the confluence path and the main connecting path; the air supply valve controls the on-off between the confluence path and the air supply passage; the main connecting path is connected to the first machine room through the transverse passage and the first branch path, the first machine room is provided with an exhaust fan, the second machine room is provided with an air supply fan, and the upper end of the air supply passage is connected to the second machine room; the control unit includes a sensor, a controller, and a communicator; the sensor is located inside the tunnel, and the communicator transmits a signal obtained by the sensor to the controller; the controller controls the operation of the exhaust fan, the air supply fan, the exhaust valve, and the air supply valve through wireless communication;

[0042] The pretreatment unit includes a plug, a collection chamber, a collection cylinder, a first baffle, a second baffle, a control valve, and a connecting pipe; an opening is provided on the peripheral wall of the collection cylinder, and a hanging ring is provided on the upper end of the collection cylinder; the control valve includes a driving part, a support plate, a supporting plate, a valve body, a bracket, a receiving chamber, a flow path, a valve plate, a driving shaft, a left valve seat, a right valve seat, a filter screen, a block, bristles, a scraper, and a block; the controller controls the operation of the control valve through wireless communication;

[0043] A plug is provided at the upper end of the main connecting path, a transverse channel is provided on the side of the main connecting path, and the downstream of the transverse channel branches into a first branch path inclined upward and a second branch path inclined downward; the control valve controls the on-off of the first branch path, and the control valve is connected to the connecting pipe to lead the fluid in the first branch path out of the first branch path; a first baffle and a second baffle are suspended on the upper part of the inner wall of the second branch path; the collecting chamber is provided downstream of the second branch path, the upper part of the collecting chamber is open, and the collecting cylinder is provided in the collecting chamber; the collecting cylinder can be taken out of the collecting chamber;

[0044] The cam is secured to the cam face and is designed to engage the cam face of the valve stem when the cam is in the upright position and the left end of the cam is secured to the cam face by the camshaft.

[0045] As shown in the figure: the valve body is formed integrally with the bracket. The drive unit is a hydraulic drive unit. The support plate and the bracket are connected by a connecting piece. The drive shaft extends into the interior of the valve plate to achieve connection. The lower wall of the second branch is inclined, and the lower wall of the transverse channel is inclined. The second baffle is located downstream of the first baffle. The length of the second baffle is greater than that of the first baffle. When the valve is installed in the first branch, the filter is located in the first branch. When the valve is installed in the first branch, the inclined surface of the support plate is supported on the floor of the first machine room.

[0046] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the patent scope of this case.

Claims

1. A tunnel circulation ventilation system, characterized by: It includes an air supply passage, a main connecting passage, a branch connecting passage, a converging passage, a transverse passage, a first branch passage, a second branch passage, a first machine room, a pre-treatment unit, an air extraction valve, an air supply valve, an air supply fan, an air extraction fan, a second machine room, and a control unit; the lower end of the branch connecting passage is connected to the interior of the tunnel, and the upper end is connected to the converging passage, and the air extraction valve controls the connection and disconnection between the converging passage and the main connecting passage; The air supply valve controls the connection and disconnection between the confluence path and the air supply path; the main connecting path is connected to the first branch path through a transverse channel to the first machine room, the first machine room is equipped with an exhaust fan, the second machine room is equipped with an air supply fan, and the upper end of the air supply path is connected to the second machine room; the control unit includes a sensor, a controller, and a communicator; the sensor is located inside the tunnel, and the communicator transmits the signal received by the sensor to the controller; the controller controls the operation of the exhaust fan, the air supply fan, the air extraction valve, and the air supply valve through wireless communication; The pretreatment unit includes a plug, a collection chamber, a collection cylinder, a first baffle, a second baffle, a control valve, and a connecting pipe; an opening is provided on the peripheral wall of the collection cylinder, and a hanging ring is provided on the upper end of the collection cylinder; the control valve includes a driving part, a support plate, a supporting plate, a valve body, a bracket, a receiving chamber, a flow path, a valve plate, a driving shaft, a left valve seat, a right valve seat, a filter screen, a block, bristles, a scraper, and a block; the controller controls the operation of the control valve through wireless communication; A plug is provided at the upper end of the main connecting path, a transverse channel is provided on the side of the main connecting path, and the downstream of the transverse channel branches into a first branch path inclined upward and a second branch path inclined downward; the control valve controls the on-off of the first branch path, and the control valve is connected to the connecting pipe to lead the fluid in the first branch path out of the first branch path; a first baffle and a second baffle are suspended on the upper part of the inner wall of the second branch path; the collecting chamber is provided downstream of the second branch path, the upper part of the collecting chamber is open, and the collecting cylinder is provided in the collecting chamber; the collecting cylinder can be taken out of the collecting chamber; The cam is secured to the cam face and is designed to engage the cam face of the valve stem when the cam is in the upright position and the left end of the cam is secured to the cam face by the camshaft.

2. The tunnel circulation ventilation system according to claim 1, characterized in that: The valve body and the bracket are formed integrally.

3. The tunnel circulation ventilation system according to claim 1, characterized in that: The driving part is a hydraulic driving part.

4. The tunnel circulation ventilation system according to claim 1, characterized in that: The supporting plate and the bracket are connected via a connecting piece.

5. The tunnel circulation ventilation system according to claim 1, characterized in that: The drive shaft extends into the interior of the valve plate to achieve connection.

6. The tunnel circulation ventilation system according to claim 1, characterized in that: The lower wall of the second branch road is inclined, and the lower wall of the transverse channel is inclined.

7. The tunnel circulation ventilation system according to claim 1, characterized in that: The second baffle is located downstream of the first baffle.

8. The tunnel circulation ventilation system according to claim 7, characterized in that: The length of the second baffle is greater than that of the first baffle.

9. The tunnel circulation ventilation system according to claim 1, characterized in that: When the control valve is installed in the first branch path, the filter screen is located in the first branch path.

10. The tunnel circulation ventilation system according to claim 9, characterized in that: When the control valve is installed in the first branch line, the inclined surface of the support plate is supported on the ground of the first machine room.

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