Suitable for use of water spray to extinguish which
Suitable for use of water spray to extinguish which, in the summer so hot and dry conditions, the situation has changed more fire, many people in the fire will think of using fire extinguishers to extinguish the fire, the following for you to share the appropriate use of water spray to extinguish which.
What is suitable for water spray fire extinguishing 1
Suitable for water spray fire extinguishing is solid material fire, class C liquid fire, beverage alcohol fire and electrical fires.
1, water spray fire extinguishing system is the use of specially designed water spray nozzle, under the working pressure of the water spray nozzle, the water flow will be decomposed into fine water droplets with a particle size of no more than 1mm to extinguish or protect the cooling of a stationary fire extinguishing system.
2, water spray fire extinguishing system by changing the physical state of water, the use of water spray nozzle so that the water from the continuous state of sprinkling into a discontinuous fine water droplets sprayed out. It has high electrical insulation properties and good fire extinguishing performance.
3, water spray extinguishing mechanism is mainly surface cooling, asphyxiation, emulsification and dilution effect, these four roles in the water droplets sprayed onto the surface of the combustion material is usually several roles occur at the same time and realize the fire.
Water spray fire extinguishing system does not apply to the scope: water can be chemical reaction caused by combustion, explosion of the fire, as well as water spray will cause significant damage to the protection of the object of the fire.
1, peroxide: peroxide refers to potassium peroxide, sodium peroxide, barium peroxide, magnesium peroxide and so on. These substances in contact with water will undergo a violent decomposition reaction, release reaction heat and generate oxygen, its contact with certain organic materials, flammable, combustible, light metals and their salts compounds can cause violent reactions, due to the reaction rate is too fast may cause an explosion or combustion.
2, water combustion substances: water combustion substances, including potassium metal, sodium metal, calcium carbide, aluminum carbide, sodium carbide, potassium carbide and so on. These substances in contact with water can make water decomposition, capture the water 's oxygen and its reaction, and release heat and produce flammable gases resulting in combustion or explosion of the evil.
3, high-temperature closed containers or space: when the water sprayed into the water mist, due to the rapid vaporization of the water mist so that the container or space pressure rises sharply, there is a risk of damage or explosion.
4, the surface temperature is often in a high temperature state of combustible liquids: when the water spray to the surface of the combustible liquid will cause splashing, resulting in the spread of fire.
What is suitable for water mist to extinguish 2
Solid fires: water spray fire extinguishing system is suitable for fighting solid material fires.
Combustible liquid fires: water spray fire extinguishing system can be used to fight class C liquid fires and beverage alcohol fires, such as fuel boilers, generator fuel tanks, class C liquid pipeline fires.
Electrical fires: water spray extinguishing system centrifugal atomized nozzle spraying water mist with good electrical insulation, so it can be used to fight oil-immersed power transformers, cable tunnels, cable trench, cable wells, cable mezzanine and other electrical fires occurring in the place.
Water spray system installation considerations
nozzle arrangement, pipeline laying, system control and other aspects. In the arrangement of the nozzle should pay attention to, water spray fire extinguishing system is mainly a local spray protection system, is a three-dimensional structure, used to prevent easy to fire or need to cool the equipment on. The arrangement of the water mist nozzle depends on the size of the protective surface area, atomization angle and protective radius, water mist nozzle and the spacing of the key with power.
In the pipeline laying to pay attention to the effectiveness of the pipeline. Water mist fire fighting system control is divided into automatic control, manual control and emergency operation. Due to the special nature of fire fighting equipment, here to remind the installation of water mist fire extinguishing system is best to have an independent fire extinguishing control cabinet. In the automatic control to pay attention to is the accuracy and timeliness of signal detection.
What is suitable for fire extinguishing with water mist 3
1, suitable for fire extinguishing with water spray is solid material fires, Class C liquid fires, beverage alcohol fires and electrical fires.
2, water spray fire extinguishing system is the application of specially designed water spray nozzle, under the working pressure of the water spray nozzle, the water stream will be broken down into small droplets with a particle size of no more than 1mm to extinguish or protect the cooling of a stationary fire extinguishing system.
3, water spray fire extinguishing system by changing the physical condition of the water, the application of water spray nozzle so that the water from the continuous sprinkler condition into a small water droplets do not continue to spray out. It has high electrical insulation properties and good fire extinguishing performance.
4, water spray extinguishing mechanism is important to the surface cooling, asphyxiation, emulsification and dilution effect, these four roles in the water spray droplets to the surface of the combustion material is usually several roles at the same time and realize the fire.
High-pressure water mist fire extinguishing system can extinguish what fire
A substation fire: transformers, capacitors, reactors, transformers, etc. are oil-filled equipment, there is a fire hazard. Cable jacket, cable trench and other parts of the fire spread quickly after the fire, and easy to cause the protection switch refuses to move, triggering grid accidents. And is an electrical fire, the use of high-pressure water mist fire extinguishing system can effectively fight the fire of electrically powered equipment
Second, the library fire: library and archives is the main body of the building is prevalent in various regions, the interior is either stored in the history of the documents, or sealed a variety of important archives, are high-value-added items. Once the fire, will cause incalculable losses. Fine water mist fire extinguishing system in the extinguishing process part of the fine water mist droplets have been vaporized, part of the fine water mist suspended in mid-air, only a very small part of the fine water mist droplets fall on the surface of combustible materials, according to the experimental data on the surface of the paper items, the water stains are only infiltrated two pages.
Data centers, archives, integrated tube corridors, automotive spray shop, rail transportation, cultural relics and ancient fires. In fact, due to the high-pressure water mist fire extinguishing system advanced fire extinguishing mechanism its use is basically not subject to the limitations of the place, on land, sea, space can be applied. Can be used to fight Class A, Class B, Class C and electrical class fires.
Water spray system for the purpose of protection and cooling is mainly applied to the following scope:
1, combustible gases and A, B, C liquids production, storage, loading and unloading, the use of facilities and installations of protection and cooling.
2, fire hazardous chemical installations and piping, such as heaters, reactors, distillation towers and other cooling protection.