Gas Fire Extinguishing System And A Reasonable Selection Of Places Configuration
Abstract: Through a variety of Gas Fire System and its physical and chemical characteristics between fire extinguishing agent, analysis of the gas fire extinguishing system and a reasonable selection of sites suitable for allocation.
Keywords: Gas fire extinguishing system; Halon Alternatives; reasonable selection; engineering applications
Overview Gas fire extinguishing system fire extinguishing agent is usually a liquid, liquefied or gaseous state stored in the pressure vessel, fire fighting as gases (including steam, aerosol) spray as a fire extinguishing medium state Fire extinguishing system . And the protection zone in each direction of space to form a uniform gas concentration, and at least maintain the concentration of standard fire fighting soaking time required to realize the fight against the protection area of space, three-dimensional fires.
Twentieth century, experts of the early eighties shows that halon fire extinguishing agents, including substances, including CFC emissions in the atmosphere will result in the destruction of the ozone layer, endangering the survival of humanity Environment , In June 1990 in London by the 57 countries signed the Montreal Protocol, the common (Amendment), decided to gradually phase out production and limit the use of CFC, halon fire extinguishing agent.
China in June 1991 joined the "Montreal Protocol" (the amendment) the State party ranks, promised in 2005 to stop production of halon 1211 fire extinguishing agent, halon 1301 in 2010 to stop production of fire extinguishing agent. And in 1996 promulgated the "China Fire Halon phase-out plan the whole industry. "
1996 years later, halon substitutes and alternative Technology Of rapid development, just a few years, seven fluorine propane, inert gas mixture (hereinafter referred to as IG-541), HFC-extinguishing system, etc. have appeared in 2003, The People's Republic of China Ministry of Public Security issued the "gas fire extinguishing systems and components, performance requirements and Test Method "(GA400-2002), on seven fluorine propane, trifluoromethane, IG-541, IG-55, IG-01, IG-100 and other fire-fighting system of production, inspection to make clear.
A gas fire extinguishing system of classification
1. Cultivars classified by fire extinguishing agent
(1) halogenated hydrocarbons (chemical fire extinguishing agent) fire extinguishing system:
Heptafluoropropane (HFC-227ea) fire-fighting system, HFC (HFC-23) fire extinguishing system
(2) Halogenated alkanes (chemical fire extinguishing agent) gas fire extinguishing system:
Halon 1211 fire extinguishing systems (2005, China had stopped production of 1211 fire extinguishing agent)
Halon 1301 fire extinguishing systems (2010, China promised to stop production of 1301 fire extinguishing agent)
(3) Pure natural gas type extinguishing system:
IG-541 (N2, Ar, CO2 mixed gas) fire extinguishing system
IG-100 (N2) fire extinguishing system IG-55 (N2, Ar mixed gas) fire extinguishing system
IG-01 (Ar) fire extinguishing system CO2 (carbon dioxide) fire extinguishing system
2. By the pressure of gas extinguishing agent delivery sources and forms of classification
(1) within the storage type fire extinguishing system
Extinguishing agent used in the bottle group driving gas (typically N2) for pressurized storage of fire extinguishing agent when the system moves through the bottle of pressurized gas for transportation systems. Such as the common fire extinguishing system.
(2) external storage type fire extinguishing system
Extinguishing agent when the system moves from the dedicated pressurized gas (usually N2) group according to the design pressure bottles were pressurized to its system.
(3) self-pressure gas fire extinguishing system
Extinguishing agent without charging pressure but on its own saturated vapor pressure for delivery of the extinguishing system. Such as HFC-extinguishing system, IG-541 fire extinguishing system, IG-100 fire extinguishing system, IG-55 fire-fighting system, IG-01 fire suppression systems, carbon dioxide fire extinguishing system.
3, by extinguishing agent storage pressure classification
(1) high-pressure system Extinguishing agent storage pressure of 15.0MPa, 20.0MPa gas fire extinguishing system. Such as: IG-541, IG-100, IG-55, IG-01 fire-fighting systems. As 20.0MPa gas fire extinguishing system equipment costs, lack of economy, is generally not used.
(2) in the low pressure system
Stored pressure fire extinguishing agent 2.1MPa, 2.5MPa, 4.2MPa, 5.6MPa, 5.5MPa gas fire extinguishing system. Such as the low pressure carbon dioxide, heptafluoropropane, HFC, high-pressure carbon dioxide fire extinguishing system.
High pressure CO2 fire extinguishing system for fire extinguishing agent is liquid at room temperature, stored under pressure (20 when the storage pressure is 5.5MPa) of carbon dioxide fire extinguishing system, low pressure CO2 fire extinguishing system is a fire extinguishing agent at -18 ~ -20 low temperature liquid storage (-18 when the storage pressure of 2.1MPa) of carbon dioxide fire extinguishing system, so they both belong to the low pressure gas fire extinguishing system-wide.
I am an expert from Mp3 Player Manufacturers, usually analyzes all kind of industries situation, such as load cell scales , fieldmeter.
Processing your request, Please wait....
