The invention discloses a self-silencing type axial flow fan ventilation
system for a tunnel, and belongs to the technical field of
tunnel ventilation equipment. The self-silencing type axial flow fanventilation
system comprises a fan room, an air outlet channel and ventilation equipment, wherein an air inlet communicating with the tunnel is formed in one side of the fan room, and the air outletchannel vertically communicating with the ground is formed in the other side of the fan room; the ventilation equipment comprises an air valve, a silencing
current collector, an axial flow fan and a silencing diffuser; and the silencing
current collector and the silencing diffuser are the same in structure, and each of the silencing
current collector and the silencing diffuser is composed of a horn-shaped housing, a wall-attached silencing layer, a left vertical silencing sheet, a right vertical silencing sheet, a left horizontal silencing sheet and a right horizontal silencing sheet. According to the self-silencing type axial flow fan ventilation
system, the silencing current collector and the silencing diffuser are adopted to replace a silencer, a current collector and a diffuser which need to be combined for use before, so that the overall mounting length of the axial flow fan ventilation system is shortened, the mounting space of the axial flow fan ventilation system is reduced, the
civil engineering workload of the fan room is reduced, and the overall manufacturing cost of the ventilation system is reduced.