Slope adjustable tunnel fire hazard wind tunnel experimental device

A wind tunnel experiment and tunnel technology, applied in measuring devices, aerodynamic tests, instruments, etc., can solve the problems that the position and running speed of the fire car cannot be controlled, and the slope of the tunnel cannot be adjusted at multiple angles, so as to achieve simple structure and easy installation Inexpensive, flexible control effects

Inactive Publication Date: 2009-12-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects in the prior art that the tunnel slope cannot be adjusted at multiple angles and the position and running speed of the fire trolley cannot be controlled in the experimental device, and provide a slope-adjustable tunnel fire wind tunnel in which the fire trolley can move experimental device

Method used

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  • Slope adjustable tunnel fire hazard wind tunnel experimental device
  • Slope adjustable tunnel fire hazard wind tunnel experimental device
  • Slope adjustable tunnel fire hazard wind tunnel experimental device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 - Simulating the influence of slope on smoke movement

[0041] First of all, the division of labor is arranged, and the firefighters and experimenters are in place to prepare for the experiment. Check whether the components and measurement subsystems of the fire model system are operating normally. Adjust the model tunnel system to achieve the set fire scene. This experiment is to simulate the influence of the slope on the smoke movement. First, simulate the smoke movement when the tunnel has no slope. The fire scale is set as a small fire scale, the ventilation wind speed is set as 3m / s, and the fire source location is fixed, which is located in the middle of the tunnel. Start each test system according to the operation specification, start the computer to start temperature data collection, add prepared fuel into the oil pan, place it in the trolley 23, and start to ignite when the test system runs stably. The experimenters recorded all kinds of experimenta...

Embodiment 2

[0042] Example 2 - The influence of the fire source on the smoke movement when the fire source is movable and the operating speed is different

[0043] According to the preparations before the experiment described in Case 1, adjust the wind tunnel tunnel 3 system to achieve the set fire scene. This experiment simulates the smoke movement under the movable fire source, and the fire scale is set as a small fire scale. The ventilation wind speed is 0m / s, and the tunnel has no slope. The first group of experiments set the moving speed of the fire source as 0.08m / s. The second group of experiments set the moving speed of the fire source to 0.14m / s. The third group of experiments set the moving speed of the fire source as 0.31m / s. The obtained experimental data is compared to analyze the influence of the movable fire source and different running speeds on the smoke movement.

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Abstract

The invention discloses a tunnel fire hazard wind tunnel experimental device with adjustable gradient, which comprises an air regulator, an air redistributing plate, a wind tunnel, a smoke discharge flue, a gradient adjuster and a carriage mobile device. The air regulator is connected with the front end of the win tunnel through the air redistributing plate, the smoke discharge flue is connected with the rear end of the wind tunnel, the bottom surface of the central portion of the wind tunnel is fixed on the gradient adjuster through a screw bolt, the carriage mobile device, the wind tunnel and the gradient adjuster are connected together. The invention can adjust the gradient of the wind tunnel and control shifting speed and location of the carriage, and imitate different scales and scenes of fire hazard. The invention has wide application, simple structure and flexible and convenient operation.

Description

technical field [0001] The invention relates to a fire experiment device, in particular to a tunnel fire wind tunnel experiment device with adjustable slope. Background technique [0002] In order to minimize casualties, vehicle damage and fire damage to the tunnel structure, it is necessary to study the smoke movement law under fire conditions in the tunnel. There are three types of methods for studying the law of fire smoke movement in tunnels: tunnel fire simulation experiments, numerical simulations, and theoretical analysis. The movement law of fire smoke in the tunnel is very complex and there are many influencing factors. At present, it is still difficult to study the movement law of tunnel smoke completely through numerical simulation and theoretical derivation. Therefore, it is very necessary to explore the movement law of tunnel smoke through the experimental method—tunnel fire simulation experiment. [0003] At present, there are three main methods of simulation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/02
Inventor 龙新峰李艳玲
Owner SOUTH CHINA UNIV OF TECH
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