The importance and daily management of fire doors
Fire door is to point to in a certain period of time will meet the requirements of the insulating refractory stability, integrity, and stays the door, it is mainly used for building fire partition firewall openings, stair between inward and outward, evacuation passages, the place such as pipe mouth of the well, normally used for personnel, can rise to stop when a fire flame spread and prevent the combustion flue gas flow, and when is air supply system work on the role of sealing. In recent years, with the increase of high-rise building, it has become more and more important in the machine room, which is one of the most important fire prevention measures in the machine room. In recent years, there have been frequent fire accidents in China, especially in some people's crowded places. It is because of the problems caused by the evacuation passageway or the safety exit fire door that caused the death group injury.
1. Classification of fire door functions.
Now the market sales and used in the computer room fire door (a) from the material can be divided into: (1) steel fire door (2) wooden fire door (3) wooden fire door lining plate (to meet the requirements of security into the door). The fire duration is divided into class a (fire resistance 72 minutes); Grade b (fire-resistant 54 minutes); Class c (fire resistance 36 minutes). (2) according to the open state, it can be divided into: closed fire door and open fire door. Often closed fire door is mainly used in computer room on the evacuation passageway, and unit managers ask the fire door at ordinary times can play the role of anti-theft security, so need to be locked door, in an emergency, the door to ensure open as evacuation passages in the direction of evacuation. Have security requirements of automatic control system for fire door relies mainly on the valve and push type electromagnetic lock and controller, push valve type electromagnetic lock will normally closed fire door lock live at ordinary times, can pass with the key, so as to meet the safety requirements, fire by using fire alarm module can automatically lock, can also through the fire control station, and the fire emergency button to manually unlock door, open the door direction for evacuation direction, to ensure that personnel escape evacuation, and a lock signal feedback to the office. Have cut off fireworks normally open fire door automatic control system mainly by magnetic and controller to realize absorption, magnetic door suction, will often open fire door at ordinary times to absorb, can normal traffic flow logistics, can adopt when fire alarm module automatically break open the door, can also through fire station and fire door emergency button or magnetic suction door, fire door in under the action of door closers, automatic door closed, fireworks to partition, and will be shut down the signal feedback to office.
The internal filling materials of fire door are: rock wool, aluminum silicate fiber cotton, perlite, silicon calcium fire prevention board, etc. Fire doors of main parts are smoke (smoke) insulation, door closers, (to keep the door closed, such as in open often rise to quickly shut down when the fire broke out on the role of the door leaf), line (close to the role of double door door leaf) in sequence. The conventional accessories include fire lock, push rod lock, hinge, fireproof glass, etc.
2. Fire door use status.
Currently has more than 1000 domestic enterprises, production and sales of fire door market capacity has reached the saturation degree, thus to some extent, some manufacturers use the malignant price cuts in an effort to fight for market share, leading to a fall in the quality of products, moreover to replace fireproof filler material honeycomb paper, refractory performance is much lower than the national standard, from 2006 countries began to severe fire door market impact, in part to maintain the market order and enhance the product quality, but the situation is still not optimistic, the shape of dumping low-cost low-quality to happen from time to tome, at the same time, fire doors are widely used in large residential area has grown two millimeters (thousands of) to industrial buildings, shopping malls, entertainment has grown two millimeters (a few) range, to fire department fire acceptance of work and daily management brought huge pressure.
3. Daily management of fire doors.
(1) check whether the fire door grade and installation site used in the machine room comply with the requirements of the fire protection code of building design. For example, the door that must be opened on fire walls should be class a fire door; Attached in the engine room fire control room, equipment room of fixed fire extinguishing system, fire water pump house and ventilation air conditioner, partition wall to open the door of the as class b fire doors, high-rise building (warehouse), public buildings, the crowded crowded places of multilayer c class factory Settings when closed stair, the door to the stairs also should be class b fire doors; The inspection door opened on the shaft wall of the cable well, pipe well, exhaust shaft, exhaust duct and garbage chute because of the class c fire door.
