A Circular Tunnel Reduces Air Intrusion with Self-Air Curtain System

An air curtain and tunnel technology, applied in the direction of using air flow as shielding, mine/tunnel ventilation, application, etc., can solve the problems of high-load operation of the tunnel insulation system, deterioration of the environment in the tunnel, low cost performance, etc., to reduce air Intrusion volume, energy consumption reduction, low cost effect

Active Publication Date: 2022-03-22
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alleviate the risk of freezing damage caused by the large intrusion of outdoor cold air at the tunnel entrance section in cold regions, solve the problems of high-load operation of the tunnel insulation system, huge energy consumption and fire caused by high-load operation, and solve the problem of traditional air curtain systems that are effective but extremely low cost performance and high-speed airflow Rolling up a lot of dust makes the environment in the tunnel worse

Method used

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  • A Circular Tunnel Reduces Air Intrusion with Self-Air Curtain System
  • A Circular Tunnel Reduces Air Intrusion with Self-Air Curtain System
  • A Circular Tunnel Reduces Air Intrusion with Self-Air Curtain System

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Embodiment 1

[0073] This embodiment discloses an air curtain system at the top of a tunnel that utilizes natural ventilation to reduce the intrusion of cold wind at the opening section of a circular tunnel in a cold region. , arc surface export air plate 5, export bottom plate 6;

[0074] 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 walls of the tunnel on both sides 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 leading-in wind panel 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 original tunnel top curve as a guide line. The arc surface structure at the bottom of the main body of the air duct is an arc conve...

Embodiment 2

[0087] This embodiment discloses an air curtain system at the top of a tunnel that uses natural ventilation to reduce the intrusion of cold wind at the opening section of a circular tunnel in a cold region. The top arc surface structure 4, the arc surface lead-out wind plate 5, and the lead-out bottom plate 6.

[0088] 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 walls of the tunnel on both sides 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 leading-in wind panel 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 original tunnel top curve as a guide line. The arc surface structure at the bottom of th...

Embodiment 3

[0103] This embodiment discloses an air curtain system at the top of a tunnel that uses natural ventilation to reduce the intrusion of cold wind at the entrance of a circular tunnel in a cold region. The main body of the system is composed of some curved air channels with specific curves. The curved surface with specific curve form constitutes 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 including the introduction of the wind plate 1, the introduction of the bottom plate 2, The arc surface structure at the bottom of the air duct main body 3, the arc surface structure at the top of the air duct main body 4, the arc surface leading out the wind plate 5, and the leading out bottom plate 6. Each arc surface that constitutes the air duct has a specific curved form. Through these specific curves The curved form is used t...

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Abstract

The present invention proposes a self-air curtain system for reducing air intrusion in a circular tunnel, which consists of a curved air duct with a specific curved form, mainly including an air inlet plate, an inlet bottom plate, an arc surface structure at the bottom of the main body of the air duct, and a top of the main body of the air duct. The curved surface structure and the curved surface lead-in wind plate, lead-out bottom plate, each curved surface that constitutes the air duct has a specific curve form, through these specific curved surface air ducts, the air duct can enter from the leading wind plate with low resistance. The direction of the air changes to form a directional air curtain that is opposite to the tunnel air inlet direction but has 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, in particular to an air curtain system at the top of a tunnel which utilizes natural ventilation to reduce the intrusion of cold wind at the opening section of a circular 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 freezing cracks in the tunnel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/14F24F9/00
CPCE21F1/14F24F9/00
Inventor 杨长青张思凯高腾高然李安桂杜五一
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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