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CN-224214210-U - Fireproof smoke-proof ventilation system for long-distance underground tunnel

CN224214210UCN 224214210 UCN224214210 UCN 224214210UCN-224214210-U

Abstract

The utility model discloses a fire-proof smoke-proof ventilation system of a long-distance underground tunnel, wherein a plurality of adjacent fire-proof partitions are formed in the inner space of the tunnel in a dividing mode, a fire wall is arranged between the fire-proof partitions and outside the fire-proof partitions at the outermost side, a fire door capable of opening and closing and a fire-proof air port capable of opening and closing are arranged on the fire-proof wall, a residual pressure valve is arranged at the fire-proof air port, the residual pressure valve only allows one-way opening and allows airflow to flow from the central part of the tunnel to the outer part of the tunnel, an air inlet machine room is connected to the outer part of the tunnel, a fan is arranged in the air inlet machine room, the output end of the fan is connected with a fire-proof air pipe, fresh air outlets are arranged at the tail ends of branch pipes of the fire-proof air pipes in the fire-proof partitions, and fire-proof valves for controlling on-off are arranged on the branch pipes of the fire-proof air pipe. The scheme has the dual functions of smoke prevention and ventilation, and can adapt to ventilation requirements of small-section and long-distance tunnel engineering at ordinary times, smoke prevention and post-disaster.

Inventors

  • CHEN DI
  • JIANG MING
  • ZHANG PING
  • ZHOU JIANJUN
  • FU GUODING
  • ZHAO YUJIAO
  • ZHAO RAN

Assignees

  • 中国电力工程顾问集团华北电力设计院有限公司

Dates

Publication Date
20260508
Application Date
20250627

Claims (9)

  1. 1. The fireproof smoke-proof ventilation system for the long-distance underground tunnel is characterized by comprising a tunnel (1), wherein the inner space of the tunnel (1) is divided into a plurality of adjacent fireproof subareas, one or more fireproof subareas in the central part of the tunnel (1) are special working areas (10), and the rest fireproof subareas are tunnel separation areas; a firewall is arranged between the fireproof subareas and outside the outermost fireproof subareas, an openable fireproof door (16) and an openable fireproof air port (6) are arranged on the fireproof wall, a residual pressure valve (7) is further arranged at the fireproof air port (6), the residual pressure valve (7) is only allowed to be opened in one direction, and the allowed airflow flowing direction is from the central part of the tunnel (1) to the outer part of the tunnel (1); The utility model discloses a fire prevention air pipe, including tunnel (1), air inlet computer lab (9) are connected with at tunnel (1) outside part, are provided with fan (2) in air inlet computer lab (9), and the output of fan (2) is connected with fire prevention tuber pipe (3), and fire prevention tuber pipe (3) branch forms a plurality of branches and extends to each fire prevention subregion by air inlet computer lab (9) respectively, and the branch end that fire prevention tuber pipe (3) are located each fire prevention subregion all is provided with new trend air outlet (5), and all is provided with fire prevention valve (8) that are used for controlling the break-make on each branch pipe of fire prevention tuber pipe (3).
  2. 2. The fire and smoke protection ventilation system of long-distance underground tunnel according to claim 1, characterized in that regulating valve (13) is also arranged in the branch pipe where the fresh air outlet (5) of special working area (10) is located.
  3. 3. The fire and smoke protection ventilation system for long distance underground tunnels according to claim 1, characterized in that each fire zone is provided with a smoke detector (15).
  4. 4. The fire and smoke protection ventilation system for long distance underground tunnel according to claim 1, characterized in that the fire prevention air duct (3) is of all welded construction.
  5. 5. The fire-proof smoke-proof ventilation system of long-distance underground tunnel according to claim 1, characterized in that the air inlet machine room (9) is provided with air inlet louvers (12), and the input end of the fan (2) is communicated with the outside through the air inlet louvers (12).
  6. 6. The fire-proof smoke-proof ventilation system of long-distance underground tunnel according to claim 1, characterized in that the fan (2) is a centrifugal fan set composed of one or more centrifugal fans, and/or the fresh air outlet (5) is a single-layer louver air outlet.
  7. 7. The fire and smoke protection ventilation system for long distance underground tunnels according to claim 1, wherein the tunnels (1) are T-shaped or Y-shaped or in-line or cross-shaped or radial or staggered to form a network.
  8. 8. A fire and smoke protection ventilation system for long distance underground tunnels according to any one of claims 1-7, characterized in that the other fire wall is provided with an openable fire shutter door (14) in addition to the fire wall adjacent to the special working area (10).
  9. 9. The fire and smoke protection ventilation system for long-distance underground tunnels according to any one of claims 1-7, wherein a smoke evacuation valve (4) is further provided in the branch pipe where the fresh air outlet (5) of the tunnel separation area is located.

Description

Fireproof smoke-proof ventilation system for long-distance underground tunnel Technical Field The utility model belongs to the technical field of tunnel ventilation, and particularly relates to a fire-proof smoke-proof ventilation system for a long-distance underground tunnel. Background Conventional mechanical smoke protection systems typically consist of an air supply duct with a fire resistance limit of not less than 1 hour, a pressurized air supply fan, fire valves and air supply openings, and the areas served typically include stairwells, antechambers, refuge rooms, refuge walkways, and the like. Conventional mechanical ventilation systems typically consist of ductwork, fans, dampers, and tuyeres, and the area serviced typically includes any room where mechanical ventilation is required. In existing tunnel engineering, conventional mechanical smoke protection systems are typically provided separately from conventional mechanical ventilation systems and operate independently. For special working areas such as some laboratories, clean rooms and the like at present, a tunnel is arranged in a mountain, so that a required special working environment is obtained in the middle of the mountain, and a required special working area is built in the inner space of the tunnel. For the tunnel engineering with the characteristics of small section and long tunnel, the inner space of the tunnel needs to have the functions of personnel activities, fire fighting evacuation and the like, and as the inner space of the tunnel is generally provided with a plurality of fireproof partitions, the space needs a plurality of processes and electromechanical installation pipelines, and the mechanical system which is conventionally arranged in a smoke-proof and ventilation scattered manner occupies too large space and is difficult to meet the space requirement of a narrow section. In addition, the conventional mechanical smoke prevention system and the conventional mechanical ventilation system have poor tightness due to the fact that the distance between the ventilation openings of the long-distance tunnel is extremely long, and the requirement of long-distance air conveying is difficult to meet. Disclosure of utility model The utility model aims to solve the technical problems of providing a fire-proof smoke-proof ventilation system for a long-distance underground tunnel, solving the problem that the conventional tunnel ventilation scheme cannot be suitable for special engineering requirements with small section and long distance, realizing the effect of ventilation at ordinary times for a space where personnel stay for a long time in the long-distance underground tunnel under the condition that the tunnel ventilation opening is far, providing a mechanical smoke-proof function when a fire disaster occurs in the tunnel space, and being used as a ventilation system for ventilation after the fire disaster when the fire disaster is extinguished, and replacing air in the tunnel for the tunnel space. According to the technical scheme, the utility model provides a fireproof smoke-proof ventilation system for a long-distance underground tunnel, which comprises a tunnel, wherein the inner space of the tunnel is divided into a plurality of adjacent fireproof subareas, one or more fireproof subareas in the central part of the tunnel are special working areas, the rest fireproof subareas are tunnel separation areas, a firewall is arranged between the fireproof subareas and outside the outermost fireproof subareas, a fireproof door capable of being opened and closed and a fireproof air opening capable of being opened and closed are arranged on the fireproof wall, a residual pressure valve is further arranged at the fireproof air opening, the residual pressure valve only allows one-way opening and allows airflow to flow from the central part of the tunnel to the outer part of the tunnel, an air inlet machine room is connected to the outer part of the tunnel, a fan is arranged in the air inlet machine room, the output end of the fan is connected with a fireproof air pipe, the fireproof air pipe branches form a plurality of branch pipes and extend to each fireproof subarea from the air inlet machine room, the tail ends of the branch pipes in each fireproof subarea are respectively provided with fresh air outlets, and each branch pipe of the fireproof air pipe is provided with a fireproof valve for controlling on each of the fireproof pipe. In some embodiments, a regulating valve is further arranged in the branch pipe where the fresh air outlet of the special working area is located. In some embodiments, each fire partition is provided with a smoke detector. In some embodiments, the fire hose is an all-welded structure. In some embodiments, the air inlet machine room is provided with an air inlet shutter, and the input end of the fan is communicated with the outside through the air inlet shutter. In some embodiments, the fan is a centrifugal fan s