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Mixed fire-extinguishing agent

A technology of fire extinguishing agent and dry powder fire extinguishing agent, which is applied in fire protection equipment and other directions, can solve problems such as fire re-ignition, and achieve the effect of preventing secondary re-ignition and strong physical cooling ability.

Inactive Publication Date: 2016-09-07
GUO ANDA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fire extinguishing mechanism of the existing fire extinguishing agent is mainly completed by eliminating the effective combustion carrier, that is, the chain growth reaction in the flame is blocked.
[0006] In the event of a fire, often after the first fire extinguishing, the combustibles and combustion-supporting substances still exist, and the temperature rises after a period of time, resulting in the phenomenon of re-ignition of the fire. agent and fire extinguishing device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] According to volume ratio, 10 parts of superfine dry powder; 75 parts of liquid heptafluoropropane, 15 parts of dry ice

[0027] 1. According to the size of the steel cylinder container, add ultra-fine dry powder into the steel cylinder in proportion;

[0028] 2. Add heptafluoropropane fire extinguishing agent in proportion, and mix under the condition that the pressure is higher than normal temperature and the gas of heptafluoropropane is converted into liquid;

[0029] 3. Finally, fill the carbon dioxide fire extinguishing agent and mix it under the condition that the pressure is higher than normal temperature and the carbon dioxide gas is converted into liquid.

Embodiment 2

[0031] According to volume ratio, 10 parts of superfine dry powder; 70 parts of liquid heptafluoropropane, 20 parts of dry ice

[0032] 1. According to the size of the steel cylinder container, add ultra-fine dry powder into the steel cylinder in proportion;

[0033] 2. Add heptafluoropropane fire extinguishing agent in proportion, and mix under the condition that the pressure is higher than normal temperature and the gas of heptafluoropropane is converted into liquid;

[0034] 3. Finally, fill the carbon dioxide fire extinguishing agent and mix it under the condition that the pressure is higher than normal temperature and the carbon dioxide gas is converted into liquid.

Embodiment 3

[0036] According to the volume ratio, 5 parts of Class D superfine dry powder fire extinguishing agent; 80 parts of liquid heptafluoropropane, 20 parts of dry ice

[0037] 1. Add Class D superfine dry powder fire extinguishing agent into the steel cylinder in proportion to the size of the cylinder container;

[0038] 2. Add heptafluoropropane fire extinguishing agent in proportion, and mix under the condition that the pressure is higher than normal temperature and the gas of heptafluoropropane is converted into liquid;

[0039] 3. Finally, fill the carbon dioxide fire extinguishing agent and mix it under the condition that the pressure is higher than normal temperature and the carbon dioxide gas is converted into liquid.

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PUM

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Abstract

The invention discloses a mixed fire-extinguishing agent. The mixed fire-extinguishing agent comprises, in volume ratio, 2-10 parts of superfine dry powder or D-class dry powder fire-extinguishing agent, 50-85 parts of liquid-state heptafluoropropane and 15-45 parts of dry ice. According to the fire-extinguishing agent disclosed by the invention, physical and chemical fire-extinguishing advantages of more than two fire-extinguishing agents are integrated, consideration is given to both physical and chemical fire-extinguishing principles, meanwhile, the fire-extinguishing agent is stored at a high pressure during storage by virtue of the characteristics of carbon dioxide, the properties of carbon dioxide are changed to form dry ice, the density of the dry ice is approximate to that of a liquid, and the viscosity of the dry ice is approximate to that of a gas; and the mixed fire-extinguishing agent has great physical and chemical fire-extinguishing capacity. Meanwhile, a secondary re-combustion phenomenon due to temperature rising can be prevented due to the great physical cooling capacity of the dry ice. The superfine dry powder fire-extinguishing agent is changed according to types of fire and capable of extinguishing many types of fire.

Description

technical field [0001] The invention relates to a mixed fire extinguishing agent. Background technique [0002] With the rapid development of the national economy and the continuous improvement of people's livelihood and safety awareness, fire-fighting equipment has been widely used, and fire-fighting facilities and fire-extinguishing devices are also equipped in many occasions. [0003] The fire extinguishers currently used in fire fighting mainly include foam fire extinguishing agent, carbon tetrachloride fire extinguishing agent, dry powder fire extinguishing agent, heptafluoropropane fire extinguishing agent, carbon dioxide fire extinguishing agent, etc., and their scope of application is not wide enough, and there are certain limitations. [0004] According to the traditional combustion theory, the combustion process is an interaction process of the three elements of combustibles, combustion-supporting substances and temperature. To extinguish a flame, one of the three...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/08A62D1/00
CPCA62D1/0014A62D1/00A62D1/0028A62D1/0092
Inventor 洪清泉吴添林
Owner GUO ANDA