Shock absorption and noise reduction type ventilation system for subway tunnel

Abstract

The invention discloses a shock absorption and noise reduction type ventilation system for a subway tunnel, and relates to the technical field of subway tunnel ventilation. Comprising a ventilating duct, and silencing devices are arranged at the two ends of the ventilating duct; a ventilator is arranged in the ventilating duct, and a damping device used for relieving vibration of the ventilator is arranged at the bottom of the ventilator; an air quality sensor is arranged in the subway tunnel, a controller for controlling the ventilator to operate is arranged in the ventilation duct, and the air quality sensor is electrically connected with the controller. When air passes through the silencing device, aerodynamic noise is reduced, when the ventilator starts to work, the damping device arranged at the bottom of the ventilator effectively slows down the vibration effect of the ventilator, mechanical noise of the ventilator is greatly reduced, opening and closing of the ventilator and the ventilation quantity are accurately controlled through the air sensor, and the ventilation efficiency of the ventilator is improved. Ventilation efficiency is guaranteed, and energy waste caused by continuous operation of the ventilator is avoided.

Description

technical field [0001] The present application relates to the technical field of subway tunnel ventilation, in particular to a subway tunnel shock-absorbing and noise-reducing ventilation system. Background technique [0002] During the construction of subway tunnels, ventilation systems are often set up to ensure the air circulation in the subway tunnels, so as to ensure the air quality in the subway tunnels. The ventilation in the subway tunnel mainly relies on natural ventilation and fan-assisted ventilation. [0003] When fans are used to assist ventilation, the operation of the fans will generate relatively large mechanical noise and aerodynamic noise. At present, in order to reduce noise, it is generally used to install a muffler on the fan, but this method can only reduce the noise between the inlet and outlet of the fan. The noise at the end, and installing a muffler on the fan will reduce the ventilation efficiency of the fan to a certain extent. [0004] With reg...

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