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A self-air curtain system for reducing air intrusion in highway tunnels

A technology for road tunnels and air curtains, which is applied in the ventilation of mines/tunnels, mining equipment, earthwork drilling and mining, etc. It can solve the problems of high energy consumption in long-term operation, and achieve the goals of reducing air intrusion, high reliability, and reducing energy consumption Effect

Active Publication Date: 2022-04-19
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But similarly, air curtains are also widely used to prevent the diffusion of smoke in tunnels and subway tunnel stations, and the application of air curtain systems to tunnel openings to reduce the intrusion of cold air will also cause problems of high energy consumption in long-term operation

Method used

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  • A self-air curtain system for reducing air intrusion in highway tunnels
  • A self-air curtain system for reducing air intrusion in highway tunnels
  • A self-air curtain system for reducing air intrusion in highway tunnels

Examples

Experimental program
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Effect test

Embodiment 1

[0079] This embodiment discloses an air curtain system at the top of the tunnel that utilizes natural ventilation to reduce the intrusion of cold wind at the entrance of a horseshoe-shaped highway tunnel in cold regions. , arc surface leading wind plate 5;

[0080] Among them, the air guide plate is connected with the arc surface structure at the bottom of the main body of the air duct in turn, forming an integrated structure. In addition, the air guide plate is connected with the wall surface of the tunnel through the introduction bottom plate, forming a four-sided closed area at the entrance to guide the air flow into the main air duct; The slab is a three-dimensional curved surface with a specific slope and a straight surface formed by sweeping a straight line with a specific slope as the starting line and the curve of the original tunnel top as a guide line. The curved surface structure 3 at the bottom is a convex curved surface ;

[0081] The arc surface structure at the...

Embodiment 2

[0093] This embodiment discloses an air curtain system at the top of the tunnel that utilizes natural ventilation to reduce the intrusion of cold wind at the entrance section of a horseshoe-shaped highway tunnel in a cold region. It mainly includes an air introduction plate 1 and an introduction bottom plate 2; Top curved surface structure 4; curved surface leading wind plate 5;

[0094] The air inlet plate is connected with the arc surface structure at the bottom of the main body of the air duct in sequence, forming an integrated structure; in addition, the air inlet plate is connected with the wall of the tunnel through the introduction bottom plate, forming a four-sided closed area at the entrance to guide the air flow into the main air duct;

[0095] The air inlet plate is a three-dimensional curved surface with a straight line with a specific slope as the starting line and swept with the original tunnel top curve as the guide line. The arc surface structure at the bottom ...

Embodiment 3

[0111] This embodiment discloses an air curtain system at the top of the tunnel that utilizes natural ventilation to reduce the intrusion of cold wind at the entrance of a horseshoe-shaped highway tunnel in cold regions. The space at the top of the tunnel is based on these curved surfaces with specific curve forms to form the main space of the air duct, and its material adopts the concrete structure consistent with the tunnel lining. When safety and reliability are required, the construction method can be further refined), mainly imported into the air panel 1 , lead-in bottom plate 2, bottom curved surface structure 3, top curved surface structure 4, curved surface leading wind plate 5, each curved surface constituting the air duct has a specific curved form, and the wind is optimized through these specific curved forms The curved surface of the tunnel allows the air duct to change the direction of the air entering from the air guide plate with low resistance, forming a directi...

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Abstract

The present invention proposes a self-air curtain system for reducing air intrusion in a road tunnel, which consists of a curved air duct with a specific curved form, which mainly includes an inlet wind plate, an arc surface at the top of the main body of the air duct, an arc surface at the bottom of the main body of the air duct, and an outlet air duct. Each curved surface that constitutes the air duct has a specific curved form. Through these specific arc air ducts, the air duct can change the direction of the air entering from the air guide plate with low resistance, forming a tunnel that is in line with the air inlet direction of the tunnel. A directional air curtain that is opposite but at a certain angle of inclination. The system of the invention has simple structure, extremely high reliability, does not require external energy input, avoids high-load operation of the tunnel thermal insulation system, and reduces the probability of accidental danger.

Description

technical field [0001] The invention belongs to the field of tunnel and underground engineering ventilation engineering, and specifically relates to an air curtain system at the top of a tunnel that utilizes natural ventilation to reduce the intrusion of cold wind at the entrance section of a horseshoe-shaped highway tunnel in a cold region. Background technique [0002] There are two types of problems in tunnel and underground engineering ventilation engineering: first, how to quickly and efficiently discharge dust particles, fire smoke and other harmful substances generated in the tunnel due to human activities or accidents through reasonable air organization; second, How to make the outdoor air that is not conducive to the environment in the tunnel invade the tunnel as little as possible through reasonable air organization. For tunnels located in cold regions such as Northeast and Northwest my country, it is not uncommon for cold air to intrude into the tunnel, causing fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/14
CPCE21F1/14E21F1/003
Inventor 高然张思凯杨长青王萌郭纬周航杜五一
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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