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Complex additive used for extinguishment with water mist

A compound additive and additive technology, applied in fire protection equipment and other directions, can solve the problems of fire pollution and low fire extinguishing efficiency, and achieve the effect of blocking flame heat radiation

Inactive Publication Date: 2011-04-27
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a compound additive for fine water mist fire extinguishing, to overcome the defects of low fire extinguishing efficiency and fire site pollution in the prior art

Method used

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  • Complex additive used for extinguishment with water mist
  • Complex additive used for extinguishment with water mist
  • Complex additive used for extinguishment with water mist

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The water mist additives and their concentrations are shown in the table below.

[0038] Add the additive into pure water under slow stirring, and stir until completely dissolved. After filtering, inject the solution into the high-pressure water bottle, the inlet end of the high-pressure water bottle is connected with the high-pressure nitrogen cylinder group, and the outlet end is connected with the fine water mist nozzle. A 0.44MW oil pan is selected, the ceiling height is set to 3m, and a 1.8L / min (4Mpa) small flow nozzle is used to spray fine water mist containing additives to extinguish the fire.

[0039] The fire extinguishing time of embodiment 1 is shown in the column of fire extinguishing time in the table. The additive prepared by this formula is used for fire extinguishing, and the fire extinguishing time is 14 seconds, and the fire extinguishing efficiency is 4 times that of pure water.

[0040]

Embodiment 2

[0042] The water mist additives and their concentrations are shown in the table below.

[0043] Its preparation method is with embodiment 1. Embodiment is the same as embodiment 1.

[0044] The fire extinguishing time of the additive in this embodiment is shown in the column of the fire extinguishing time in the table.

[0045]

Embodiment 3

[0047] The water mist additives and their concentrations are shown in the table below.

[0048] Its preparation method is with embodiment 1. Embodiment is the same as embodiment 1.

[0049] The fire extinguishing time of the additive in this embodiment is shown in the column of the fire extinguishing time in the table.

[0050]

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PUM

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Abstract

The invention relates to a compound additive used for extinguishment with water mist, which comprises three kinds of different materials of alkali metal salts, surfactant and diluent according to different action mechanisms of the additive, wherein the alkali metal salts are at least two or a mixture of more of potassium carbonate, sodium carbonate, sodium phosphate, sodium lactate and sodium iodide and account for 1-3 percent of the total mass percent of the additive solution; the surfactant is one or a mixture of sodium dodecyl benzene sulfonate and cocoanut fatty acid diethanolamide and accounts for 0.5-1 percent of the total mass percent of the additive solution; and the diluent is one or a mixture of urea and ammonium bicarbonate and accounts for 0.5-1 percent of the additive solution. The compound additive has simple preparation process, can be rapidly dissolved without adding an organic solvent, has high extinguishment efficiency and no corrosion on extinguishment site equipment, and can be widely applied to water mist extinguishment systems in various occasions and extinguishment occasions.

Description

technical field [0001] The invention relates to a composite additive for fine water mist fire extinguishing, which relates to a fine water mist fire extinguishing additive for fire fighting, which can be widely used in various fixed and portable fine water mist fire extinguishing systems, and can be added to ships or In the high-pressure single-phase flow or two-phase flow fine water mist fire extinguishing system in the submarine, it can improve the fire extinguishing efficiency. Background technique [0002] Water mist mainly relies on physical action to extinguish fire. In order to further improve the fire extinguishing efficiency of water mist, water mist containing additives has become a new hot spot of research at home and abroad in recent years. Introduce an additional physical and chemical fire extinguishing mechanism in the fine water mist, that is, selectively add one (or several) organic (or inorganic) compounds to the water to change the physical and chemical pro...

Claims

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Application Information

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IPC IPC(8): A62D1/00
Inventor 杨立军赵建波
Owner BEIHANG UNIV
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