A fire experiment simulation device for stairwells or shafts of high-rise buildings under the action of external wind

Abstract

The invention provides a high-rise building stairwell or vertical shaft fire experimental simulation device under the action of external wind. The device can simulate high-rise building fire combustion conditions in a laboratory and can be used for researching a smoke flowing law and a control system of a high-rise building stairwell or vertical shaft under the action of the external wind. The device comprises a laboratory table body, a removable air screen system and a matched measurement and control system. In terms of an experimental measurement system, all-around observation and reaching can be carried out on smoke flowing parameters and smoke control effects through an advanced and complete temperature-speed-pressure-radiant heat flux measuring system, a smoke component analyzing system, a flow field measuring system, an observation system and the like; in terms of experimental cost, compared with a large-size laboratory table, the small-size laboratory table is less in consumption, high in repeatability, convenient to operate and higher than a computer calculation method in accuracy.

Description

technical field [0001] The invention relates to the technical field of fire safety, in particular to a fire experiment simulation device for stairwells or shafts of high-rise buildings under the action of external wind. Background technique [0002] With the development of economy and the increase of population, more and more high-rise buildings stand in the city, and the corresponding fire safety issues have aroused people's widespread attention. When a fire breaks out in a high-rise building, high-temperature smoke enters the vertical passages such as the stairwell or shaft through the room, corridor, and front room and spreads upward to other floors of the high-rise building, seriously affecting the safe evacuation of personnel. For example, in November 2010, a fire broke out in a high-rise apartment building for teachers in Jing'an District, Shanghai, killing 58 people and injuring more than 70 others. Many researchers have shown that the vast majority of deaths in fire...

AI Technical Summary

Problems solved by technology

The above-mentioned experimental devices are all related experiments without considering the external wind, but for actual high-rise buildings, there is generally a large external wind, which has an important impact on the smoke movement inside the stairwell and shaft. At present, domestic In addition, only CFD numerical simulation research has been carried out, and no systematic and in-depth experimental research has been carried out.

[0004] Full-scale fire experiments need to mobilize a lot of manpower, material resources and financial resources. In addition, the experimental conditions are difficult to control, are greatly affected by various factors, and have poor repeatability. not a good choice

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