Multifunctional tunnel fire test platform with connection flues

A test platform and multi-functional technology, applied in teaching models, instruments, educational tools, etc., can solve problems such as the inability to simulate and study the movement of flue gas, change the characteristics of the flow field of flue gas movement, etc., to achieve complete functions, convenient observation, modular high degree of effect

Inactive Publication Date: 2021-05-14
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult for a tunnel model with too small size to meet some important similarity criteria. Too small a cross-sectional area will affect the turbulent flow structure of the smoke and change the flow field characteristics of the smoke movement; smoke movement

Method used

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  • Multifunctional tunnel fire test platform with connection flues
  • Multifunctional tunnel fire test platform with connection flues
  • Multifunctional tunnel fire test platform with connection flues

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A multi-functional tunnel fire test platform with connecting flue, including tunnel model main body, connecting flue 3, longitudinal ventilation smoke exhaust system, point type smoke exhaust system, fire source combustion simulation system and measurement and recording system, the tunnel model The main body includes the first tunnel model 1 and the second tunnel model 2. The first tunnel model 1 and the second tunnel model 2 are respectively fixed on the test bench support. The test bench support can adjust the tunnel slope according to the needs of researchers; the first tunnel model 1 and the second tunnel model 2 are composed of several detachable chamber units with a rectangular cross-section. Record the effect of ventilation and smoke exhaust, and a curved tempered glass window is installed on the side of each chamber unit. The glass window can be opened from top to bottom to facilitate the arrangement or replacement of some detection instruments and equipment insi...

Embodiment 2

[0040] The difference from the technical solution of Embodiment 1 is that the ignition source combustion simulation system adopts a gas combustion simulation system, and the gas ignition source combustion simulation system includes a porous burner 13 arranged inside the tunnel model and a gas flowmeter 14 arranged outside the tunnel model , pressure gauge 15, switch control valve 16, fuel gas storage bottle 17 and gas supply pipeline 18, combine Figure 4 , the gas flow meter 14 is connected with the porous burner 13, the switch control valve 16 is connected with the gas flow meter 14 through the pressure gauge 15, the fuel gas storage bottle 17 is connected with the switch control valve 16, and the porous combustion is provided by the fuel gas storage bottle 17. The burner 13 provides gas to ensure that the porous burner 13 can continue to burn, thereby better simulating the fire scene; the porous burner 13 is opened and closed by the switch control valve 16, and the gas suppl...

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PUM

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Abstract

The invention relates to the technical field of tunnel fire smoke exhaust, in particular to a multifunctional tunnel fire test platform with connection flues. The test platform comprises a plurality of tunnel models; the tunnel models are communicated through connection channels; a longitudinal ventilation and smoke exhaust system is arranged in each tunnel model and comprises a reducing pipe; one end of each reducing pipe is connected with a main smoke exhaust channel of the corresponding tunnel model, and the other end of each reducing pipe is communicated with an air outlet of a variable-frequency axial-flow air supply fan through a rectifying pipe. A gap between the top of each longitudinal ventilation and smoke exhaust system and the top of the corresponding tunnel model forms a smoke exhaust pipeline; a smoke exhaust air shaft with a smoke exhaust fan is arranged at the top of each smoke exhaust pipeline; an electric smoke exhaust valve is arranged between each longitudinal ventilation and smoke exhaust system and the corresponding smoke exhaust pipeline; a fire source combustion system is used for providing smoke; and a measurement and recording system is used for recording specific data. According to the test platform of the invention, simulation research can be carried out on the plurality of smoke exhaust modes of tunnel fire disasters with the communication flues, and the smoke exhaust effects of the various ventilation and smoke exhaust modes can be conveniently compared with each other.

Description

technical field [0001] The invention relates to the technical field of tunnel fire smoke exhaust, in particular to a multi-functional tunnel fire test platform provided with connecting flues. Background technique [0002] With the development of transportation, subways are becoming more and more common. However, due to the airtight tunnel space, once a fire occurs, high-temperature smoke is not easy to discharge, which will seriously threaten the lives of people trapped in the tunnel. Therefore, in the event of a fire, if the fire site can be effectively ventilated and exhausted, the fire smoke can be effectively controlled, and a safe and smoke-free environment can be provided for evacuation, which is of great significance for reducing casualties in subway fires. [0003] There are two modes of fire smoke control: longitudinal ventilation and key smoke exhaust. In the key smoke exhaust mode, by opening the smoke exhaust outlets around the fire source, the smoke will pass th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 姜学鹏王正阳
Owner WUHAN UNIV OF SCI & TECH
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