A six-sided fire whirlwind experimental device

Abstract

The invention discloses a six-sided fire whirl experimental apparatus which comprises a regularly hexagonal column frame, horizontal slide grooves, movable tempered glass doors, a smoke collecting hood and a fuel pool. The horizontal slide grooves are arranged at the outer side edges of the top and the bottom of the column frame, the movable tempered glass doors fit with the regularly hexagonal column frame and are arranged in the horizontal slide grooves, the smoke collecting hood is arranged over the column frame, and the fuel pool is internally arranged in the center of the bottom of the column frame. Compared with the traditional six-sided fire whirl experimental apparatus, the six-sided fire whirl experimental apparatus has the advantages that wind inlet change conditions in fire scenes are simulated by means of adjusting opening modes and widths of the movable tempered glass doors, so that the experimental diversity can be improved, the research range can be enlarged, and fire whirl formation conditions and laws under the conditions of different wind inlet modes and widths can be researched.

Description

technical field [0001] The invention belongs to the technical field of fire safety, and in particular relates to an experimental device capable of simulating fire whirlwinds under different wind inlet modes and widths. Background technique [0002] When forest and grassland fires, medium and low-intensity planned burning, and some urban building fires occur, there is often a strong convective fire phenomenon in the form of rotating flames. When the intensity of the rotating flames is large enough, the movement of the flames will suddenly Change, forming a fire whirlwind with a strong spiral upward motion. Different air inlet widths and patterns in the fire field will form different types of air flow fields, which will cause changes in the natural entrainment air flow velocity, and the rotating flow field will propagate inward at different speeds layer by layer, resulting in different degrees of difficulty in forming fire whirlwinds. Fires release heat at different rates dep...

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Problems solved by technology

The opening mode of this generating device is fixed, and it can only provide experimental research on the fire whirlwind under one opening width. The experimental form is single and the application range is small.

At present, there are very few researches on the formation mechanism, structural characteristic changes and characteristic parameter changes of the fire whirlwind under different air intake patterns and widths in the fire field at home and abroad. There is no report on the proprietary experimental device in this regard in the existing technical data.

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