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The method of local fire extinguishing by controlling the droplet size of hexafluoropropane to achieve Class 1a

A technology of hexafluoropropane and droplet size, which is used in fire rescue and other directions to achieve the effects of wide application range, good fire extinguishing effect and high fire extinguishing success rate

Inactive Publication Date: 2015-10-28
严洪 +14
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen from the above that there is no standard or specification for hexafluoropropane, and it is urgent to fill this gap to ensure the reasonable application of the system and better performance of fire extinguishing

Method used

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  • The method of local fire extinguishing by controlling the droplet size of hexafluoropropane to achieve Class 1a
  • The method of local fire extinguishing by controlling the droplet size of hexafluoropropane to achieve Class 1a
  • The method of local fire extinguishing by controlling the droplet size of hexafluoropropane to achieve Class 1a

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Embodiment Construction

[0025] In May 2012, under normal outdoor conditions, according to the number of nozzles, the installation height (the height from the top of the wood stack to the nozzle), and the filling pressure, the 1A level fire extinguishing test was carried out 15 times. The test conditions all met the requirements of GB4351.1-2005 and Class A fire test in GA602-2006 and the standard for local application fire extinguishing test, that is, the wind speed is not greater than 3m / s, there is no severe weather such as rain, snow or hail, the ambient temperature is -40 ℃ -55 ℃, and the relative humidity is 45 %—75%, atmospheric pressure 86KPa—106KPa. Suspended hexafluoropropane fire extinguishing device (Hangzhou Fire Equipment Co., Ltd., model XQLW8 / 6) is used, the dosage of hexafluoropropane is 6kg, and a standard atomizing nozzle is used. The nozzle is round, with a diameter of 21mm and an equilateral 3 There are 3 rotating cores evenly distributed in the angular shape, the distance from th...

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Abstract

The invention provides a method for achieving 1A-grade local fire extinguishing by controlling the particle sizes of hexafluoropropane fog drops. The method defines the particle size control on the hexafluoropropane fog drops as a key condition for fire extinguishing by a hexafluoropropane local fire extinguishing system. The method provided by the invention is high in fire extinguishing success rate, good in fire extinguishing effect and wide in application range and application prospect, fills in the blank of application and research of fire extinguishing by hexafluoropropane at home and abroad, and lays a foundation for large-scale popularization and application of the hexafluoropropane for local fire extinguishing.

Description

technical field [0001] The invention belongs to the technical field of fire protection, in particular to a method for local fire extinguishing of 1A level by controlling the particle size of hexafluoropropane droplets. Background technique [0002] At present, except for the carbon dioxide system, other known gas fire extinguishing systems can only use the application method of total submersion, and the research work to find a gas system that can be used as a local application like the carbon dioxide fire extinguishing system has not been systematically carried out. [0003] The history of applying gas fire extinguishing system in industrialized countries is earlier. Carbon dioxide fire extinguishing system began to be used in the world in the 1920s, and haloalkane fire extinguishing system began to be used in the 1960s. The fire extinguishing agents used in the early gas fire extinguishing systems in my country are mainly carbon tetrachloride and carbon dioxide. Since 1964...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62C31/05
Inventor 严洪高云升刘连喜卢政强盛彦锋马建琴董海斌周军冯松厉华根黄胜利王晓宇吴小松姚建军严孝忠
Owner 严洪