A control method for a safe and energy-saving ventilation system in expressway tunnels

Abstract

The invention discloses a control method for a safe and energy-saving ventilation system of an expressway tunnel. The ventilation system includes a detector group, a control center, a fan and an energy storage device. The control method includes steps: 1) the control center acquires the values ​​of each state variable; 2) the control center controls the wind turbine to work in the power generation state or the electric state by judging whether each state variable is in a normal range; 3) the wind turbine works in the electric state , the control center determines whether the wind speed is in the normal range, and controls the fan to work in the forward rotation ventilation state or the reverse wind reduction state. Compared with the existing tunnel exhaust system, the present invention increases the power generation working state of the fan on the one hand, uses the tunnel wind energy to generate electricity when the tunnel does not need exhaust, and stores the electric energy in the energy storage device to realize energy saving; on the other hand The electric reverse state of the fan is added, which can control the wind speed and wind direction of the tunnel wind according to the site conditions, and achieve the effect of precise smoke exhaust and reduction of toxic gas concentration and smoke dust concentration.

Description

technical field [0001] The invention relates to the technical field of ventilation and smoke exhaust in highway tunnels, in particular to a control method for a safe and energy-saving ventilation system for highway tunnels. Background technique [0002] During driving, a car often consumes a large amount of oxygen and emits a large amount of exhaust gas, such as CO 2 , CO, nitrogen oxides, etc. As a relatively sealed space, the tunnel will have adverse effects on the human body if these gases cannot be discharged immediately. Not only that, the exhaust gas emitted by vehicles often contains some solid particles. When the concentration of solid particles in the tunnel is high, it will lead to reduced visibility, which will affect the driving safety of drivers. On the other hand, as a relatively sealed space, tunnels rely only on natural wind for oxygen supplementation and exhaust gas treatment, often failing to achieve the expected results. Therefore, it is very important ...

AI Technical Summary

Problems solved by technology

[0003] In the existing technical solutions, the wind speed is often controlled by controlling the start and stop of the fan unit to speed up the air circulation in the tunnel and speed up the ventilation process, but there are the following disadvantages: 1. It is impossible to adjust the air volume according to the required air volume; 2. 1. The wind speed in the event of a fire cannot be reasonably controlled by the fan; 3. The wind energy of the tunnel cannot be reasonably used when ventilation is not needed

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