Function Of Steel Fire Door

What are the advantages and disadvantages of water extinguishing? What should we pay attention to? Water extinguishing is to use the mechanical force of water flow to extinguish the flame of burning objects. Due to the simple and convenient use of water, there is sufficient water source in the mine, and the water fire extinguishing method has been widely used. The advantages of installing steel fire doors for water fire extinguishing are as follows: 1. The source of water is convenient, and it can be transported to the fire site from a distant place by water pump and pipeline. 2. Strong water flow can crush the flame of the burning object, and the well will wet the surface of the burning object and its adjacent objects, so as to gradually reduce the fire area. 3. When water encounters a blazing flame, it absorbs a large amount of and produces a large amount of steam, which can not only reduce the temperature of the burning object, but also isolate the contact between air and the burning object. 4. It is easy to distinguish whether the fire is completely extinguished by using water. The disadvantages of using water to extinguish oil fires are 1. Water cannot be used to extinguish oil fires, because the oil is light and will float on the water surface, and the area of the fire will expand with the flow of water. 2. Water is a conductor and cannot be used to extinguish fires of charged electrical equipment and high-voltage electricity. 3. A small amount or weak water flow cannot be used to extinguish the fire. In the case of less water and large fire, the water will soon turn into steam, and the well can not put out the fire. 4. The side rock is fragile. After a large amount of water, the firmness of the side rock is affected, and it is difficult to excavate later.

Pay attention to the following items when extinguishing with water. 1. When extinguishing a fierce fire, do not flush the water directly to the fire source, which will produce a large amount of water vapor, and can cause the sudden ejection of burning coal and hot slag, hurting firefighters. Start from the outside of the fire source, and then gradually approach the fire source. 2. Ensure normal ventilation during fire extinguishing. Firefighters stand in the air inlet flow, and the well makes the fire gas and water vapor directly lead to the return air flow. Special attention should be paid to prevent these gases from channeling to the firefighters to avoid injury. In order to achieve good results in fire extinguishing with water, the Song Dynasty used water spraying to reduce water consumption. What are the performances and characteristics of various fire extinguishers? Chemical fire extinguishers are portable fire extinguishers (dry extinguishers, foam extinguishers, four mound carbon fire extinguishers, carbon dioxide extinguishers), foam extinguishers and air foam extinguishers three categories. Qianzao fire extinguisher sprays out the powder to extinguish the fire by pressing the carbon dioxide into a liquid. This fire extinguisher can only be used to extinguish small fires in transformer room and other caverns; It also has a certain effect on the combustion of small-scale coal pillars or supports. When it is used to put out coal dust fire, a special jet nozzle is installed at the nozzle to prevent coal dust from flying. The disadvantage of this fire extinguisher is that the holding time is too short, there is no skilled operation technology, and it can play a good role. Foam fire extinguisher steel fire door is commonly used as a fire extinguisher and fire fighting facilities. It uses acid solution and alkaline solution to interact with each other to produce a large amount of foam, covering the surface of the combustion object, forming a thin film to separate the combustion material from the air. At the same time, it also emits carbon dioxide to help extinguish the fire.

Foam extinguishers have thin foam extinguishers and thick foam fire extinguishers. To extinguish fire that is more difficult to fire, use thin foam extinguishers; When the fire is easy to extinguish, a steel fire door should be installed after thick foam extinguisher is used in Song Dynasty. It should be firmly borne in mind that fire extinguishers must not be used to extinguish fire caused by electrified electrical equipment, such as cable ignition and transformer oil burning, because the foam ejected is conductive body, which can cause the fire to expand and the fire extinguisher will be electrified. The four radon carbon fire extinguisher is equipped with four radon carbon. When sizuka carbon comes into contact with the flame, LiLang becomes a large amount of inert steam with a large proportion, which covers the surface of the burning object to isolate the air and extinguish the fire. The 4radon carbon fire extinguisher is suitable for extinguishing the fire of charged electrical equipment.