Self-silencing type axial flow fan ventilation system for tunnel

Abstract

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.

Description

technical field [0001] The invention relates to a self-silencing type axial flow fan ventilation system for tunnels, belonging to the technical field of tunnel ventilation equipment. Background technique [0002] At present, the main ventilation method for long tunnels is to use axial fans for ventilation. The configuration of the axial flow fan ventilation system is arranged from the air inlet to the air outlet direction, followed by dampers, mufflers, collectors, axial fans, diffusers, mufflers and other components. It enters the axial flow fan through the collector, diffuses through the diffuser, and is discharged through the second muffler. Among them, the structure of the current collector and the diffuser are the same, both of which are horn-shaped structures, and the installation directions of the two are opposite. wind. This configuration occupies a large installation space, the system ventilation pipeline is long, the system ventilation resistance is large, the i...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a self-silencing axial flow fan ventilation system for tunnels, which solves the problems that the current tunnel axial flow fan ventilation system occupies too much volume, the civil engineering workload is large, and the construction cost is high.

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