Tunnel ventilation and smoke exhaust system and control method thereof

Abstract

The invention discloses a tunnel ventilation and smoke exhaust system. The tunnel ventilation and smoke exhaust system comprises a tunnel main body, a tunnel inner layer and a main ventilation cavity, wherein the tunnel inner layer is arranged on the inner side of the tunnel main body, a smoke exhaust channel is formed by a gap between the tunnel inner layer and the tunnel main body, the main ventilation cavity and an emergency ventilation cavity are formed by partition plates between the tunnel inner layer and the tunnel main body, an axial flow fan is fixedly installed on the tunnel inner layer, a jet fan is fixedly installed in the main ventilation cavity, an emergency smoke exhaust channel is fixedly installed between the tunnel main body and the tunnel inner layer, two independent and coexisting ventilation and smoke exhaust structures are adopted, a self-sensing gathering type fire smoke exhaust structure is arranged in the emergency smoke exhaust channel, fire smoke is quickly discharged, the safe escape time of the tunnel is effectively prolonged, by means of a control method of the tunnel ventilation and smoke exhaust system, the main ventilation cavity and the emergency smoke exhaust channel can be reasonably distributed, the smoke exhaust work is concentrated at the fire occurrence position, and the situation of idle waste is avoided.

Description

technical field [0001] The invention relates to the technical field of road administration, in particular to a tunnel ventilation and smoke exhaust system and a control method thereof. Background technique [0002] During the operation of road tunnels, vehicles emit harmful exhaust gases such as CO and NOX and smoke and dust. When the concentration of harmful exhaust gases and smoke and dust exceeds a certain value, it will cause harm to drivers and passengers, affecting their health and driving safety. Therefore, in order to ensure the hygienic standard of the air environment required for the normal operation of the tunnel, the tunnel should be ventilated. At the same time, there are always potential hazards caused by car fires or leakage of dangerous goods transportation during tunnel operation, and disaster prevention ventilation should be considered. Therefore, it is a major issue in tunnel ventilation and disaster prevention to not only ensure good air environment hygi...

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Problems solved by technology

[0003] However, the current tunnel ventilation system usually adopts a single exhaust channel structure, and when a fire occurs in the tunnel, the smoke is large, resulting in low smoke exhaust efficiency, and the escape time of people in the tunnel is short, and a few of them have a fire smoke discharge pipe structure. In the ventilation system, the smoke exhaust pipes are often arranged scatteredly. When a fire occurs, many smoke exhaust devices are idle and unloaded, resulting in unsatisfactory smoke exhaust efficiency.

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