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Method of achieving 21B-level local fire extinguishment by controlling grain size of hexafluoropropane fog drops

A technology of hexafluoropropane and droplet size, which is applied in fire rescue and other directions to achieve the effect of good fire extinguishing effect, broad application prospect and wide application range.

Inactive Publication Date: 2013-08-07
盛彦锋 +14
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  • Summary
  • 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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  • Method of achieving 21B-level local fire extinguishment by controlling grain size of hexafluoropropane fog drops
  • Method of achieving 21B-level local fire extinguishment by controlling grain size of hexafluoropropane fog drops
  • Method of achieving 21B-level local fire extinguishment by controlling grain size of hexafluoropropane fog drops

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Embodiment Construction

[0025]In May 2012, under normal outdoor conditions, 15 times of 21B level fire extinguishing tests were carried out according to the number of nozzles, nozzles, installation height (height from oil surface to nozzle), and filling pressure. The test conditions all met GB4351.1-2005 And the standard of Class B fire test and local application fire extinguishing test in GA602-2006, that is, the wind speed is not greater than 3m / s, there is no bad weather such as rain, snow or hail, the ambient temperature is -40°C-55°C, and the relative humidity is 45%-75%, atmospheric pressure 86KPa-106KPa. A suspended hexafluoropropane fire extinguishing device (Hangzhou Fire Fighting Equipment Co., Ltd., model XQLW3 / 2) is used. The dosage of hexafluoropropane is 2kg. A standard atomizing nozzle is used. The nozzle is circular with a diameter of 21mm, and the nozzle is equilateral 3 There are 3 rotating cores evenly distributed in the angular shape, the distance from the center of the rotating c...

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Abstract

The invention provides a method of achieving 21B-level local fire extinguishment by controlling grain size of hexafluoropropane fog drops. According to the method, the control on the grain size of the hexafluoropropane fog drops is clearly defined as the key condition of fire extinguishment in a hexafluoropropane local fire extinguishing system. The method provided by the invention is high in fire extinguishment success rate, good in fire extinguishment effect and wide in application range and application prospect, fills the gaps of application and research of fire extinguishment by hexafluoropropane at home and abroad and lays a foundation for large-scale popularization and application of hexafluoropropane for local fire extinguishment.

Description

technical field [0001] The invention belongs to the technical field of fire protection, in particular to a method for local fire extinguishing by controlling the droplet size of hexafluoropropane to reach 21B level. Background technique [0002] At present, except for the carbon dioxide system, other known gas fire extinguishing systems can only be applied in the way of total flooding, and the research work on finding a gas system that can be used as a local application like the carbon dioxide fire extinguishing system has not yet been systematically carried out. [0003] Industrial developed countries have an earlier history of applying gas fire extinguishing systems. Carbon dioxide fire extinguishing systems began to be used in the world in the 1920s, and halon fire extinguishing systems began to be used in the 1960s. The fire extinguishing agents used in early gas fire extinguishing systems in my country were mainly carbon tetrachloride and carbon dioxide. Since 1964, my...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C31/02
Inventor 盛彦锋卢政强刘连喜董海斌高云升马建琴严洪周军冯松厉华根黄胜利王晓宇吴小松姚建军严孝忠
Owner 盛彦锋