Variable-angle fire spreading experimental device for solid fuel under action of environmental wind

Abstract

The invention discloses a variable-angle fire spreading experimental device for solid fuel under the action of environmental wind. The device comprises a variable-angle solid fuel experiment table, anair supply system and a data acquisition and processing system. The variable-angle solid fuel experiment table can change the size of an experimental material according to experimental requirements,the side edge of the experiment table is connected to an angle adjusting disc so that the experiment table can rotate at any angle, and the environmental wind indifferent directions and magnitudes canbe simulated by combining different arrangement modes of the experiment table and a wind tunnel; a thermocouple frame at the back of the experiment table is of a combined rectangular structure and ismatched with a front movable thermocouple frame to measure the temperature of any position of the experimental material, and experiment-related parameters can be measured by combining a heat flow measurement system and a camera shooting system. According to the device, a set of building material fire spreading simulation experimental device under the coupling action of the environmental wind andan inclination angle is established, the air supply system is safe, convenient and accurate, the experimental device has a complete parameter measuring system, and a complete process fromignition of abuilding material to spreading under different environmental conditionscan be researched.

Description

technical field [0001] The present invention relates to the technical field of fire safety, and more specifically designs an experimental device for fire spread of solid fuels at varying angles under the action of ambient wind, which is used to test solid fuel combustion and fire spread behaviors under the forced convection of different wind speeds and directions. Research. Background technique [0002] With the development of modern buildings in the direction of large space and multi-functionality, the types and quantities of combustible materials used in buildings are gradually increasing, which can easily induce fires and spread extremely fast, posing a great threat to building safety. Combustion of building materials is a kind of solid fire spread. Due to its complex composition, it is difficult to control the trend of fire spread after fire. Therefore, the study of fire spread on solid surfaces has great practical significance for the prevention and control of building...

AI Technical Summary

Problems solved by technology

[0005] Through the investigation and analysis of the existing technology, it can be seen that most of the predecessors’ research on solid fuels is concentrated on the condition of a single influencing factor, and the research on the fire spread and combustion characteristics of materials under the influence of ambient wind or inclination angle cannot determine the environmental wind. The characteristic parameters of material combustion under the coupling effect of inclination angle are quite different from the actual fire scene

Moreover, the data measured by the existing experimental methods are relatively simple, and there is no related special experimental research system

Images