Purification and ventilation device of air in tunnel

Abstract

The invention discloses a purification and ventilation device of air in a tunnel, which is provided with a cavity with openings at two ends; the cross sections of the two ends of the cavity are in a trumpet shape; the middle part of the cavity is in a cuboid; one end of the cavity is an air intake, and the other end of the cavity is an air outlet; a flow equalizing pore plate and an electrostatic dust collector are vertically arranged in the cavity in sequence; a plurality of splitters are fixed on the upper wall and the lower wall vertically in a trumpet shape part at the front end of the cavity at the axial direction of the cavity; the quantity of the splitters is odd number; a central splitter is coaxial with the axis of the cavity; the rest splitters are arranged at two sides of the central splitter in sequence; uniform clearance is formed between each two splitters; the flow equalizing pore plate is provided with a plurality of air vents; the shape of the flow equalizing pore plate is the same as that of the cross section in the inner chamber of the cavity; the flow equalizing pore plate is fixedly connected with the periphery of the inner wall of the cavity; the clearance is formed between the flow equalizing pore plate and the splitters; the clearance is formed between the electrostatic dust collector and the flow equalizing pore plate; and the inlet air and the outlet air of the electrostatic dust collector run through with the cavity. By the device in the invention, the velocity distribution uniformity of the air flowing through the electrostatic dust collector is ensured, thereby ensuring the efficiency of static dust collection.

Description

Technical field [0001] The invention relates to a ventilation device, in particular to a tunnel air purification ventilation device. Background technique [0002] When a motor vehicle travels in a tunnel, it generally slows down, resulting in incomplete gasoline combustion and high-concentration exhaust gas; moreover, harmful gases generated in the tunnel are generally guided by jet fans and passed through high-altitude wind towers for direct discharge Above the tunnel, it directly pollutes the air above the tunnel, seriously affecting the ecological environment of the surrounding area, and harming the physical and mental health of local residents. [0003] Air pollutants in the tunnel mainly include particulate matter PM, carbon monoxide CO, hydrocarbon THC and nitrogen oxide NO X Wait. At present, tunnel exhaust gas treatment technology is mainly divided into two aspects: electrostatic dust removal and catalytic adsorption. Most of the dust contained in the exhaust gas is remov...

AI Technical Summary

Problems solved by technology

The disadvantages are that the purification material and the tunnel air cannot be fully and effectively contacted, the uniformity of gas distribution is low, and the purification effect is not good.

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