Frequency conversion energy-saving ventilation system and method for construction of high-altitude, high-temperature and extra-long tunnels

Abstract

The invention provides a high-altitude, high-temperature, super-long tunnel construction frequency conversion energy-saving ventilation system and method, belonging to the technical field of tunnel construction ventilation. The system modifies the frequency conversion control of the fan operation mode of the high-altitude, high-temperature and super-long tunnel ventilation system, uses the neural network algorithm to train and predict the influencing factors of the tunnel air volume, and intelligently adjusts the fan operating frequency by comparing the real-time air supply volume of the tunnel. The main research object of the present invention is the tunnel construction ventilation system, and the control object is the frequency-variable fan. The present invention proposes a neural network-based frequency conversion energy-saving control method for tunnel construction. The method monitors the environmental parameters of the natural wind in the tunnel in real time and performs intelligent frequency conversion control on the ventilation equipment, which can effectively save the energy consumption of the tunnel ventilation system and reduce the loss of fans. And the energy saving effect is remarkable.

Description

technical field [0001] The invention relates to the technical field of tunnel construction ventilation, in particular to a frequency conversion energy-saving ventilation system and method for high-altitude, high-temperature, and extra-long tunnel construction. Background technique [0002] At present, in the construction of high-altitude, high-temperature and extra-long tunnels, on the one hand, due to the high-altitude, high-altitude, high-cold and hypoxia, the air is relatively thin, and dust, toxic and harmful gases are easy to accumulate during the construction process, resulting in serious air pollution. On the other hand, high-temperature tunnels will lead to reduced efficiency of mechanical equipment, increased failures, worsened construction environment, and reduced labor productivity. [0003] According to the traditional tunnel press-in ventilation, the outdoor air is sent to the vicinity of the tunnel face through the air duct, and then exhausted to the outside of...

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Problems solved by technology

[0002] At present, in the construction of high-altitude, high-temperature and extra-long tunnels, on the one hand, due to the high-altitude, high-altitude, high-cold and hypoxia, the air is relatively thin, and dust, toxic and harmful gases are easy to accumulate during the construction process, resulting in serious air pollution.

On the other hand, high-temperature tunnels will lead to reduced efficiency of mechanical equipment, increased failures, worsened construction environment, and reduced labor productivity

[0003] According to the traditional tunnel press-in ventilation, the outdoor air is sent to the vicinity of the tunnel face through the air duct, and then exhausted to the outside of the tunnel through the tunnel, which can achieve the purpose of ventilation and cooling to a certain extent, but there are only two fans used in the tunnel construction site. There are two working states: "on" and "off", these situations lead to low efficiency and high power consumption; and in terms of tunnel cooling, due to the low boiling point of water in high altitude areas and easy evaporation, the traditional cooling method of sprinkling water will be more difficult. Difficult to use, and the traditional ice cooling method consumes a lot of energy, cumbersome management, and difficult to apply on a large scale

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