Foam fire suppression system
Description:
A foam fire extinguishing system mainly consists of a fire pump, a
fire water source, a foam extinguishing agent storage device, a
foam proportioning device, a foam generating device, and pipelines.
It works by mixing foam extinguishing agent and water in a specific
ratio using a foam proportioner to create a foam mixture, which is
then used by the foam generating device to form air foam before
being applied to the burning object to extinguish the fire. | | High multiplier generator | Semi fixed foam fire extinguishing device | Vertical/horizontal foam tank |
Types:
Foam fire extinguishing systems are classified into
three types based on the foam expansion ratio: high, medium, and
low expansion.
There are also multiple options for the type of foam
liquid
| | Soluble water film forming foam extinguishing agent (AFFF/AR-3%,
AFFF/AR-6%) | Aqueous film-forming foam(AFFF-3%,AFFF-6%) | Soluble fluoroprotein foam extinguishing agent (FP/AR-3%, FP/AR-6%) | Fluoroprotein foam extinguishing agent (FP-6% FP-3%) | Soluble water-resistant film-forming foam extinguishing agent is
composed of hydrocarbon surfactant, fluorocarbon surfactant,
desiccant, additive, polar film-forming agent, stabilizer,
antifreeze, preservative, etc. In addition to the performance of
ordinary
aqueous film forming foam extinguishing agent to extinguish oil
fires, this extinguishing agent can also quickly extinguish polar
solvent fires such as alcoho, ketone and aldehyde (polar film
forming agent is added in the production process, forming
a layer of gel film on the surface of polar flammable liquid to
protect the foam from damage). It is a multi-functional foam
extinguishing agent. Widely used in key disaster prevention sites
such as oil fields, refineries, oil depots, ships, large chemical
plants,
chemical fiber plants, petrochemical enterprises, chemical product
warehouses, solvent plants, etc. | Aqueous film-forming foam extinguishing agent (also called light
water foam extinguishing agent) is composed of hydrocarbon
surfactant, fluorocarbon surfactant, auxiliary agent, stabilizer,
antifreeze, etc. It is an efficient foam extinguishing agent. It is
characterized by forming a protective film on the surface of oil to
inhibit oil evaporation. With the dual role of foam and protective
film, it has high fire extinguishing efficiency, fast speed, good
anti reburning performance and sealing performance, high pollution
resistance and long storage period. It can foam in various low and
medium expansion foam generating equipment to put out oil fires;
It can be used in combination with dry powder fire extinguishing
agents to extinguish fires, and can also be used to extinguish
large
oil storage tank fires through "underwater spraying". Widely
applicable to key disaster prevention sites such as oil fields,
refineries,
oil depots, ships, docks, airports, hangars, etc | Soluble fluoroprotein foam extinguishing agent (also known as
multifunctional fluoroprotein foam extinguishing agent)
is prepared by adding an appropriate amount of anti alcohol agent
and additives to fluoroprotein foam extinguishing agent. It
not only has the function of fluoroprotein foam to extinguish oil
fires, but also has the ability of anti soluble foam to
extinguish alcohol fires. It can be used to extinguish oil fires,
as well as alcohol,ketone, aldehyde and other
flammable polar solvent fires. Widely applicable to key disaster
prevention sites such as large petrochemical enterprises,
chemical fiber plants, oil storage solvent plants, breweries,
chemical product warehouses, ships, airports, oil extraction
platforms, storage and transportation terminals, etc | Fluoroprotein foam extinguishing agent is prepared by adding
appropriate fluorocarbon surfactant on the basis of protein foam
extinguishing agent. Due to the function of fluorocarbon
surfactant, the extinguishing agent has the extinguishing
performance of
protein foam extinguishing agent. The method of "underwater
spraying" can also be used to put out the fire of large oil product
storage
tanks, or it can be combined with dry powder extinguishing agent,
which is one third faster than protein foam extinguishing agent.
Widely applicable to oil fields, oil depots, petrochemical
enterprises, ships, airports, and units storing large amounts of
oil products,
used to extinguish large-scale oil fires. |
The main fire extinguishing mechanism of foam systems:
The purpose of extinguishing fires is achieved through the
covering, flooding, cooling and suffocation effects of the foam
layer
(1) Covering effect: The foam covering layer formed by
fire-extinguishing foam on the surface of the burning object can
isolate the surface of the burning object from the air.
(2) Sealing effect: The foam layer seals the surface of the burning
material, which can block the thermal radiation of the flame to the
burning material, prevent the evaporation or thermal decomposition
and volatilization of the burning material, and make it difficult
for flammable gases to enter the combustion zone.
(3) Cooling effect: The liquid folded from the foam has a cooling
effect on the combustion surface.
(4) Asphyxiation effect: The water vapor produced by the heating
and evaporation of foam has the effect of diluting the oxygen
concentration in the combustion zone.
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