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Tunnel sprinkling (fog) temperature-lowering structure

A cooling structure and tunnel technology, which is applied in the field of tunnels, can solve the problems of insufficient ventilation to eliminate the heat generated by cars, poor air cleanliness, and poor engineering feasibility, so as to ensure normal traffic, reduce temperature, and improve air quality.

Inactive Publication Date: 2008-01-09
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But when the tunnel is long, the usual ventilation volume of the tunnel is not enough to eliminate the heat generated by the car, so that the temperature of the tunnel will rise significantly, affecting the safe operation of passing vehicles
The cooling methods used in tunnels include ventilation, cold air supply, and laying of cold water pipes. However, road tunnels have high temperatures, large air volumes, and poor air cleanliness. The use of ordinary cooling technologies is expensive and the engineering feasibility is poor.

Method used

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  • Tunnel sprinkling (fog) temperature-lowering structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Nozzles 2 and 3 are symmetrically distributed in the high temperature section of tunnel 1, and are evenly arranged on the side wall of tunnel 1 along the length direction of tunnel 1. Spray (mist) heads 2 and 3 are arranged at certain intervals along the length direction (longitudinal direction) of tunnel 1, The spray particle size is selected to be less than 100 μm, and the longitudinal interval between nozzles 2 and 3 is not less than 50 meters.

Embodiment 2

[0018] Nozzles 2 and 3 are symmetrically distributed in the high-temperature section of tunnel 1, and are evenly arranged on the top of tunnel 1 along the length direction of tunnel 1 (longitudinal direction) with certain intervals to arrange spray (mist) heads 2 and 3, spray The particle size is selected to be below 100 μm, and the longitudinal interval between nozzles 2 and 3 is not less than 50 meters.

[0019] The control of the nozzles 2 and 3 is shown in Figure 3, which is controlled by the pump group 5, the regional control valve 6, and the control valve 7. Number of settings for nozzles 2 and 3

[0020] It can be seen from the above embodiments that the nozzles are generally distributed and arranged in the high temperature section of the tunnel, and arranged uniformly along the length of the tunnel. The position of the sprinkler on the inner wall of the tunnel can be determined according to the specific project installation conditions. It can be installed symmetricall...

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Abstract

A spray structure for cooling in lane way is especially applicable to long ventilation section of large exchange amount and high temperature. A sprayer of granular diameter less than 50mum is installed to the inner wall of the lane way.

Description

technical field [0001] The invention relates to tunnels, in particular to a tunnel spray (fog) cooling structure, especially suitable for projects with long ventilation sections, high exchange volume and high temperature inside the tunnel. Background technique [0002] In highway (road) tunnels, cars running in the tunnel emit a lot of heat, so that the temperature of the air in the tunnel increases significantly. When the tunnel is not long, the amount of ventilation provided in the tunnel for diluting the concentration of pollutants is sufficient to eliminate the heat generated in the cavern and keep the cavern temperature at a reasonable level. But when the tunnel is long, the usual ventilation volume of the tunnel is not enough to eliminate the heat generated by the car, so that the temperature of the tunnel rises significantly, which affects the safe operation of passing vehicles. The cooling methods used in tunnels include ventilation, cold air supply, and laying of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F3/00
Inventor 郑晋丽蒋卫艇劳衡生
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE