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CN-224228725-U - Tunnel harmful gas detection and purification system

CN224228725UCN 224228725 UCN224228725 UCN 224228725UCN-224228725-U

Abstract

The application discloses a system for detecting and purifying harmful gases in a tunnel, and relates to the technical field of tunnel engineering. The utility model provides a tunnel harmful gas detects and clean system, includes running gear, is equipped with the casing on the running gear, is equipped with air intake, air exit and intercommunication air intake and air exit's wind channel on the casing, and the air intake is equipped with the air exhauster, is equipped with harmful gas detection device and harmful gas purifier in proper order along the air supply direction in the wind channel, and the air exit is equipped with the exhaust fan, and harmful gas detection device is connected with alarm indication device. According to the application, the harmful gas detection device and the harmful gas purification device are arranged in the same equipment, when the concentration of the detected harmful gas exceeds the safety threshold value, the harmful gas can be purified, so that seamless connection of the harmful gas detection and the purification treatment is realized, the response of a ventilation system is not required to be waited, the treatment time is greatly shortened, the accumulation of the harmful gas in a tunnel is avoided, and the safety risk caused by the exceeding of the standard of the harmful gas is reduced.

Inventors

  • YANG JUNJIE
  • LUO LI
  • LI YANSONG
  • LIU WEIHUA
  • WANG JIALIN
  • CHEN QI
  • HE JUNXIU

Assignees

  • 中国五冶集团有限公司

Dates

Publication Date
20260512
Application Date
20250617

Claims (10)

  1. 1. The utility model provides a tunnel harmful gas detects and clean system, its characterized in that, including running gear (1), be equipped with casing (2) on running gear (1), be equipped with air intake (231), air exit (211) and intercommunication on casing (2) air intake (231) with wind channel (24) of air exit (211), air intake (231) are equipped with air exhauster (3), be equipped with harmful gas detection device (4) and harmful gas purifier (5) in proper order along the air supply direction in wind channel (24), air exit (211) are equipped with exhaust fan (6), harmful gas detection device (4) are connected with alarm indication device (7).
  2. 2. The tunnel harmful gas detection and purification system according to claim 1, wherein a filter screen (25) is provided at the air inlet (231).
  3. 3. The tunnel harmful gas detection and purification system according to claim 1, wherein the housing (2) comprises an outer box (21), a vertical pipe (22) and a transverse pipe (23), the outer box (21) is arranged on the traveling device (1), the exhaust outlet (211) is arranged on the wall of one end of the outer box (21), the other end of the outer box (21) is connected with the lower end of the vertical pipe (22), the upper end of the vertical pipe (22) is connected with one end of the transverse pipe (23), the other end of the transverse pipe (23) forms the air inlet (231), the transverse pipe (23), the vertical pipe (22) is communicated with the inner cavity of the outer box (21) and forms the air duct (24), and the harmful gas detection device (4) and the harmful gas purification device (5) are arranged in the inner cavity of the outer box (21).
  4. 4. A tunnel harmful gas detection and purification system according to claim 3, wherein a plurality of said exhaust ports (211) are provided on the wall of said outer casing (21), each of said exhaust ports (211) being provided with said exhaust fan (6).
  5. 5. A tunnel harmful gas detection and purification system according to claim 3, wherein a door (212) which can be opened and closed is provided on the wall of the outer box (21) at a position facing the harmful gas purification device (5).
  6. 6. Tunnel harmful gas detection and purification system according to claim 1, 2, 3, 4 or 5, characterized in that a first separation net (26) between the harmful gas detection device (4) and the harmful gas purification device (5) is arranged in the air duct (24).
  7. 7. The tunnel harmful gas detection and purification system according to claim 1, 2, 3, 4 or 5, wherein the harmful gas detection device (4) comprises a gas detector for detecting different types of harmful gases.
  8. 8. The tunnel harmful gas detection and purification system according to claim 1, 2, 3, 4 or 5, wherein the harmful gas purification device (5) comprises a primary filtering adsorption assembly (51) and a secondary adsorption decomposition assembly (52) which are sequentially arranged in the air supply direction.
  9. 9. The tunnel harmful gas detection and purification system according to claim 8, wherein a second isolation net (27) is provided in the air duct (24) between the primary filtering adsorption component (51) and the secondary adsorption decomposition component (52).
  10. 10. The tunnel harmful gas detection and purification system according to claim 8, wherein the primary filter adsorption assembly (51) comprises a synthetic fiber cotton filter layer and an alkaline adsorption layer, and the secondary adsorption decomposition assembly (52) comprises a modified activated carbon adsorption layer, a catalytic oxidation layer and a HEPA filtration layer.

Description

Tunnel harmful gas detection and purification system Technical Field The application relates to the technical field of tunnel engineering, in particular to a system for detecting and purifying harmful gases in tunnels. Background In the tunnel construction and operation process, the existence of harmful gas is a significant potential safety hazard which cannot be ignored. Common harmful gases include carbon monoxide, methane, hydrogen sulfide, sulfur dioxide and the like, and the harmful gases not only can cause serious harm to the health of personnel, such as poisoning, choking and the like, but also can cause accidents of fire, explosion and the like, thereby causing huge casualties and economic losses. Therefore, ensuring the safety and reliability of the air quality in the tunnel is important to ensuring the safety of personnel and the tunnel. In order to cope with the harm of harmful gas in a tunnel, the method adopted at present is to detect the concentration of the harmful gas in the tunnel through a harmful gas detection device, and after the concentration of the harmful gas exceeds a safety threshold, fresh air is sent into the tunnel through a mechanical ventilation system in a mode of exhausting air, pressing air or the combination of the two, so that the harmful gas is diluted and discharged. However, the existing harmful gas detection and treatment method has the defects that 1, the detection and treatment processes are separated, and a certain delay exists from the detection of the harmful gas exceeding the standard to the starting of a ventilation system for treatment, and the timeliness of treatment is insufficient, so that the harmful gas can accumulate in a tunnel, and the safety risk is increased. 2. The mechanical ventilation system has poor effect in a long tunnel, large ventilation resistance, unstable air quantity and air speed, and difficult effective dilution and discharge of harmful gas, especially the condition that the leakage point of the harmful gas is far away from the ventilation opening. Disclosure of utility model The application aims to provide a tunnel harmful gas detection and purification system, which solves the problem that the safety risk is increased due to the accumulation of harmful gas in a tunnel caused by separation of detection and treatment processes. The technical scheme adopted for solving the technical problems is as follows: The utility model provides a tunnel harmful gas detects and clean system, includes running gear, be equipped with the casing on the running gear, be equipped with air intake, air exit and intercommunication on the casing the air intake with the wind channel of air exit, the air intake is equipped with the air exhauster, be equipped with harmful gas detection device and harmful gas purifier in proper order along the air supply direction in the wind channel, the air exit is equipped with the exhaust fan, harmful gas detection device is connected with alarm indication device. Further, a filter screen is arranged at the air inlet. Further, the casing includes outer case, standpipe and violently pipe, the outer case is established on the running gear, be equipped with on the wall of outer case one end the air exit, the other end of outer case with the lower extreme of standpipe is connected, the upper end of standpipe with the one end of violently pipe is connected, the other end of violently pipe forms the air intake, violently pipe the standpipe with the inner chamber intercommunication of outer case forms the wind channel, harmful gas detection device with harmful gas purifier establishes in the inner chamber of outer case. Further, a plurality of exhaust outlets are formed in the wall of the outer box, and each exhaust outlet is provided with an exhaust fan. Further, a box door capable of being opened and closed is arranged on the wall of the outer box and opposite to the harmful gas purification device. Further, a first isolation net is arranged in the air duct and positioned between the harmful gas detection device and the harmful gas purification device. Further, the harmful gas detection device comprises a gas detector for detecting different types of harmful gases. Further, the harmful gas purification device comprises a primary filtering adsorption component and a secondary adsorption decomposition component which are sequentially arranged along the air supply direction. Further, a second isolation net is arranged in the air duct and positioned between the primary filtering adsorption component and the secondary adsorption decomposition component. Further, the first-stage filtering and adsorbing component comprises a synthetic fiber filter cotton layer and an alkaline adsorbing layer, and the second-stage absorbing and decomposing component comprises a modified activated carbon adsorbing layer, a catalytic oxidation layer and a HEPA (high efficiency particulate air) final filtering layer. The application has the beneficial effect