The outdoor fire water supply system is divided into domestic and fire water supply systems, production and fire water supply systems, production and domestic fire water supply systems, and independent fire water supply systems according to their purposes.
With this water supply system, when the domestic water consumption reaches the maximum hourly water consumption, it should still ensure the supply of all fire water.
Shared water supply system for living and fire protection: the shared water supply system for living and fire protection is widely used in cities and towns, residential areas, enterprises and institutions.
Building fire fighting facilities refer to the general name of equipment and facilities set in buildings (structures), such as automatic fire alarm system, automatic sprinkler system and fire hydrant system, which are used to prevent and extinguish building (structure) fires.
Outdoor fire hydrant water supply system The outdoor fire water supply system is mainly classified according to the fire water pressure, main purpose, pipe network layout and outdoor fire hydrants.
It is one of the indispensable safety technical facilities for modern fire protection.
The full water column of the water gun shall not be less than 10m.
2、 Smoke control system The function of fire control and smoke exhaust system is to use mechanical smoke exhaust method to remove harmful smoke generated by fire to the outside, so as to reduce indoor personnel to inhale more smoke and avoid poisoning or suffocation.
Composition and working principle of smoke control system: smoke control system is divided into smoke control system and smoke exhaust system.
1、 Automatic fire alarm system Automatic fire alarm system is a kind of automatic fire fighting facilities that people set in buildings or other places in order to detect and report fire early, and take effective measures to control and extinguish fire.
At the same time, it is convenient for daily inspection and maintenance, and the fire water supply is safe and reliable.
2.
High pressure fire water supply system: the pipe network of the high pressure fire water supply system always maintains enough pressure.
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Smoke prevention system refers to a system that uses mechanical pressurized air supply or natural ventilation to prevent smoke from entering evacuation passages and shelters in case of building fire.
The fire can be extinguished by directly connecting the hose and water gun from the fire hydrant.
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Composition of automatic fire alarm system: the automatic fire alarm system is generally composed of fire detection and alarm system, fire linkage control system, combustible gas detection and alarm system and electrical fire monitoring system.
Temporary high-pressure fire water supply system: the pressure in the pipe network of the temporary high-pressure fire water supply system is not high at ordinary times, and high-pressure fire pumps are set in the pump station (room), which will be started immediately in case of a fire.
In case of a fire in the building, the fire signal shall be transmitted to the smoke control controller by the fire site personnel manually or by the smoke detector, the movable smoke damper wall shall be opened to control the smoke in the smoke control zone where the fire occurs, the smoke outlet and smoke exhaust damper linked with the smoke outlet shall be opened, and the fire control valve in the air conditioning system and air supply duct shall be closed to prevent the smoke from spreading from the air conditioning and ventilation system to other non fire rooms, Finally, the smoke exhaust fan installed on the roof will discharge the smoke to the outside through the smoke exhaust pipe.
Smoke exhaust system refers to a system that uses mechanical smoke exhaust or natural ventilation to exhaust smoke outside the building and control the visibility of smoke areas in the building.
Commonly used are automatic fire alarm system, automatic sprinkler system, fire hydrant system, gas fire-extinguishing system, foam fire-extinguishing system, dry powder fire-extinguishing system, smoke control and smoke exhaust system, safety evacuation system, etc.
The outdoor fire water supply system is divided into high-pressure fire water supply system, temporary high-pressure fire water supply system and low-pressure fire water supply system according to the requirements of fire water pressure.
In this way, the water in the pipe network always keeps flowing, the water quality is not easy to deteriorate, and the investment is relatively economical.
When this water supply system is adopted, the pressure in the pipe network shall maintain the maximum water consumption for production, living and fire fighting, and the water gun shall be arranged at the highest point of any building within the protection range.
Composition and working principle of mechanical smoke exhaust system: the mechanical smoke exhaust system is composed of smoke exhaust outlet, smoke exhaust fire damper, smoke exhaust pipe, smoke exhaust fan, smoke exhaust outlet and smoke exhaust controller.
When this water supply system is adopted, the pressure of its pipe network shall ensure that the water pressure of the fire hydrant at the most unfavorable point during fire fighting is not less than 10m water column (calculated from the ground).
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Composition and working principle of mechanical pressure air supply and smoke exhaust system: the mechanical pressure air supply and smoke exhaust system is mainly composed of air supply outlet, air supply duct, air supply fan and fan control cabinet.
It is not necessary to use a fire truck or other mobile fire pump to pressurize the fire site.
3、 Fire hydrant water supply system The fire hydrant water supply system is divided into two parts: indoor fire hydrant and outdoor fire hydrant water supply system.
Shared water supply system for production and fire protection: In some industrial enterprises, the shared water supply system for production and fire protection is used..
Working principle of automatic fire alarm control system, The electrical signal is transmitted to the automatic fire alarm controller, and the location, time, etc.
of the fire are displayed at the same time, so that people can find the fire in the shortest time, and take effective fire extinguishing measures in time to extinguish the fire at the initial stage, so as to minimize the loss of people’s lives and property.
Mechanical smoke prevention means that sufficient fresh air is sent to the evacuation passage and other places where smoke prevention is required to maintain the pressure higher than other parts of the building, so as to block the smoke generated in the fire area outside the smoke prevention part.
