Indoor fire hydrant system is the most basic fire fighting equipment in buildings, which consists of fire fighting water supply equipment and electronic control parts. Fire fighting equipment realizes the following control of fire hydrant system through electrical control cabinet: start and stop of fire pump; Display the position of the pump start button, and display the working and fault status of the fire pump.
2. Automatic sprinkler system
Automatic sprinkler system can be divided into closed type and open type according to the nozzle form; The former can be divided into many forms? Among them, the wet automatic sprinkler system is the most widely used.
Wet automatic sprinkler system is an important subsystem in building fire monitoring system. In case of fire, the thermal sensitive element (glass ball) of the closed nozzle installed in this area is cracked by heat, so that the pressure water in the pipe network is sprayed out through the nozzle to extinguish the fire. At the same time, the water flow indicator installed on the branch road of water distribution network acts to send out the opening signal, which is received by the water spray alarm box and delayed by lo.
After judging the signal, the alarm box sends out an alarm signal and displays the fire alarm line and position; The alarm box outputs a signal to start the spray booster pump or spray water pump, so as to increase the water supply of the pipe network and provide the water and water pressure needed for quickly extinguishing the fire source; After receiving the alarm signal, the fire control room immediately takes corresponding fire control measures.
3. Halon fire extinguishing system
Halon fire extinguishing system is used in important places in buildings where water is not suitable for fire extinguishing, such as power distribution room, computer room and archives room. Normally, halon fire extinguishing system realizes automatic fire extinguishing through fire detection and alarm system.
Commonly used haloalkane extinguishing agents are 12 1 1 and 130 1. They have the advantages of high fire extinguishing efficiency, fast fire extinguishing speed, no trace after fire extinguishing, good electrical insulation, minimal corrosion, easy storage and long-term storage, and are excellent fire extinguishing agents.
However, halon fire extinguishing agent also has obvious disadvantages: high toxicity and high price; More importantly, it is one of the culprits that destroy the atmospheric ozone layer and will face elimination. Carbon dioxide and other fire extinguishing agents can be used to replace halon fire extinguishing agents, and there will be better alternative products to meet the needs in the future.
Extended data:
design requirements
1, the scope of building fire protection design is very wide, and it is a comprehensive problem of multi-discipline and multi-discipline. Moreover, the larger the building scale, the more functions it has, and the more complicated the control items are. Therefore, in modern building facilities, fire protection design must adopt mechanization and automation as much as possible, and adopt fast and reliable control methods to minimize fire losses.
2. We should also pay attention to the system design. Under the same conditions, domestic equipment should be given priority as much as possible, and foreign equipment should not be easily introduced unless necessary. First, foreign products are generally more expensive, need foreign exchange, and it is inconvenient to maintain in the future and easy to be controlled by others.
3. The current national standards and codes that should be followed in system design mainly include Code for Design of Automatic Fire Alarm System (GB50116-98), Code for Fire Protection Design of High-rise Civil Buildings, Code for Fire Protection Design of Buildings, Code for Fire Protection Design of Civil Air Defense Engineering, Code for Design of Power Supply System of Industrial and Civil Buildings, etc.
4. The design of the system must be undertaken by the design unit recognized and approved by the relevant state departments.
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