Cup type combustor for foam extinguishing agent experiment

Abstract

The invention discloses a cup type combustor for a foam extinguishing agent experiment. The cup type combustor is characterized in that a bottom fuel outlet formed in a liquid fuel tank is communicated with a combustion cup through a flow regulating unit, a combustion cup hood is vertically arranged on a cabin opening on the left side of the upper surface of a foam cabin, the combustion cup is located at the center of the combustion cup hood, a top-sealed transparent hood is vertically arranged on a cabin opening on the right side of the upper surface of the foam cabin, a gas inlet is formed in the top of the top-sealed transparent hood, a gas rectifying net is arranged in the waist portion of the top-sealed transparent hood, a foam generating screen is packaged between a bottom sleeve pipe of the top-sealed transparent hood and the foam cabin, a foam liquid sprayer located above the foam generating screen faces towards the foam generating screen and is located below the gas rectifying net, and a foam liquid guide pipe connected with the foam liquid sprayer penetrates through the top-sealed transparent hood from the side wall of the top-sealed transparent hood. The cup type combustor can be used for researching the fire extinguishing performance and the fire extinguishing microcosmic mechanism of foam extinguishing agents, parameters can be easily controlled, and repeatability is good.

Description

technical field [0001] The invention relates to a measuring device for the fire extinguishing ability of a foam fire extinguishing agent. Background technique [0002] The cup burner, the first low-speed coaxial flow flame device invented by Hirst and Booth, is widely used in the field of scientific research to measure the extinguishing concentration of various gas extinguishing agents and study the extinguishing mechanism. [0003] In a cup burner, the fuel and oxidant are distributed on both sides of the flame face and flow coaxially. The fire extinguishing agent mainly enters the flame combustion area through the carrying effect of the oxidant. Since the fuel equivalence ratio for controlling combustion is far less than 1, the flame can obtain sufficient oxygen and reduce the influence of flow on the flame. Compared with the actual flame combustion, the flame in the cup burner is more stable, the amount of fire extinguishing agent required to extinguish the flame is rela...

AI Technical Summary

Problems solved by technology

[0005] The present invention is to avoid the disadvantages of the above-mentioned prior art, and provides a cup burner for foam fire extinguishing agent experiment, which is used as an experimental device to test the fire extinguishing performance of various foam fire extinguishing agents, and overcomes the fire extinguishing performance of existing foam fire extinguishing agents The disadvantage of inconvenient testing is that it has the advantages of small size, simple structure, good repeatability, easy control of parameters, convenient operation, and the measurement data can be applied to the design of large-scale fire extinguishing systems.

Images