Burn-back experiment equipment
An experimental device and burner technology, which is applied in the fields of laboratory utensils, medical science, dentistry, etc., can solve the problems of unclear, no detailed reports on the effect of back-burning in the form of openings, etc.
Inactive Publication Date: 2005-12-28
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology
At present, people do not know the critical conditions and suppression methods for its generation, especially the opening form of the chamber, the position and ventilation mode of the vent, and the more active fire extinguishing methods (fine water mist or inert gas fire extinguishing) etc. There are no detailed reports and clear experimental methods for the impact of combustion.
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Embodiment Construction
[0019] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.
[0020]The body of cavity 1 is a rectangular cavity, the inner cavity is 1.2m×0.6m×0.6m, the shell is two layers of 2mm thick 1Cr18Ni9Ti stainless steel plate, and the middle is made of 200mm thick aluminum silicate thorn blanket cotton (or known as PFA Dry aluminum needle-punched blanket) as insulation layer. Some sampling ports, working ports and spare ports are arranged on the top, bottom and side of the cavity, such as: temperature detection port 2, pressure detection port 3, component detection port 4, air flow detection port 5, fuel inlet 6, ignition port 7. Fire extinguishing nozzle 8 and air vent 9, etc. An observation window 10 made of quartz glass is installed on the front side of the cavity, which is welded and fixed with a stainless steel frame. One end and the top of the cavity are provided with a gravity flow opening 11 (the full opening at the en...
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The present invention is a burnback experiment device, which relates to a disaster combustion experiment device. The whole experimental device includes cavity, fuel supply system, ignition system, fire extinguishing system and data acquisition system; the cavity can be installed with different opening forms, and the fuel combustion and flame propagation inside the cavity can be displayed through the observation window; the fuel supply system uses It is used to control the supply of fuel; the ignition system is used to ignite the fuel and the gravity flow mixture after the chamber cover is opened; the fire extinguishing system is used to control the supply of fire extinguishing agent; the data acquisition system is used to collect and process the temperature of the hot flue gas in the chamber, Data such as composition, chamber pressure, gas flow at openings, and flame images. By means of the present invention, it is possible to study the influence of different opening forms, ventilation modes, fuel types, fire extinguishing means, etc. on various critical conditions for back-burning, and the feasibility and suppression mechanism of suppressing back-burning; The experiments and researches related to the flashback provide the conditions.
Description
Technical field: [0001] The invention relates to a disaster combustion experiment device. Background technique: [0002] Flashback is a phenomenon in which hot smoke re-burns sharply due to a sudden and large amount of fresh air after a fire in a building with limited ventilation enters anoxic combustion or even smoldering. The flashback phenomenon threatens the safety of human beings, especially the safety of firefighters, because of its suddenness and powerful destructiveness. At present, people do not know the critical conditions and suppression methods for its generation, especially the opening form of the chamber, the position and ventilation mode of the vent, and the more active fire extinguishing methods (fine water mist or inert gas fire extinguishing) etc. There are no detailed reports and clear experimental methods on the impact of combustion. Invention content: [0003] The object of the present invention is to provide a kind of flashback experimental device c...
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IPC IPC(8): A62C2/00A62C37/50B01L1/00B01L99/00
Inventor 范维澄翁文国杨立中邓志华宋虎
Owner UNIV OF SCI & TECH OF CHINA