Automatic tunnel portal pavement deicing and anti-icing system

Abstract

The invention discloses an automatic tunnel portal pavement deicing and anti-icing system. The automatic tunnel portal pavement deicing and anti-icing system comprises a fluid reservoir, a plurality of nozzles, a fluid delivery pipe, a fluid discharge pipe and an electromagnetic valve, wherein the fluid reservoir is arranged at a tunnel portal and used for storing deicing fluid, the plurality of nozzles are mounted on the two sides of a road outside the tunnel portal respectively, the fluid delivery pipe is connected to the nozzles, one end of the fluid discharge pipe is connected with the fluid delivery pipe and the other end of the fluid discharge pipe is connected to the bottom of the fluid reservoir, and the electromagnetic valve is arranged on the fluid discharge pipe. If the pavement at the tunnel portal is covered with snow or ice, a road condition sensor feeds back a measurement signal to an industrial controller, and the industrial controller controls pull-in of a relay II and switching on of an electromagnetic valve by use of an end Q2 and an end QCOM, so that the deicing fluid in the fluid reservoir is delivered into the fluid delivery pipe via the fluid discharge pipe and finally is sprayed onto the pavement at the tunnel portal by the nozzles; as a result, the snow cover or the ice layer on the road near the tunnel portal can be melted. The industrial controller controls the relay II to be powered off and the electromagnetic valve to be switched off in certain time after spraying, and at the moment, the nozzles stop spraying the fluid. The automatic tunnel portal pavement deicing and anti-icing system has the advantages of automatic switching on and off, simple structure, no need of manual operation and no need of road closure.

Description

technical field [0001] The invention relates to the technical field of road deicing, in particular to an automatic deicing and anti-icing system for road surfaces at tunnel entrances. Background technique [0002] With the continuous expansion of the national expressway network, the expressway mileage in mountainous areas has increased sharply, and the number of tunnels has increased. The traffic hazards and accidents caused by the freezing of tunnel entrances have become more and more prominent. Because the entrance and exit of the tunnel will be affected by the "tunnel wind", the road here is more likely to freeze than ordinary roads. Moreover, the tunnel is relatively narrow. When many drivers drive to the entrance and exit of the tunnel on the icy road, because of the underestimation of the difficulty of driving at the entrance and exit of the tunnel, and the large changes in brightness and darkness, people's vision cannot adapt immediately, so it is particularly easy to...

AI Technical Summary

Problems solved by technology

Although the mechanical deicing method has the advantages of high efficiency and strong mobility, the cost of the machinery is high. Due to the need for manual operation, there are great potential safety hazards under severe weather conditions. The road needs to be closed during work to affect traffic, which has a huge impact on the road surface. Damage and deicing is not timely; traditional deicing agent deicing will accelerate road damage and reduce the service life of the road; cable heating deicing method is a kind of electric heating device between the road surface and the base layer that has appeared in recent years. The working voltage or current achieves the purpose of heating the electric heating device to achieve deicing

This method has disadvantages such as inconvenient installation and post-maintenance, and high energy consumption.

Therefore, the existing technology has problems such as untimely deicing, road closure, damaged road surface, inconvenient installation, high energy consumption, and environmental protection, etc., which no longer meet the development requirements of modern expressway operation safety.

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