SU1215724A1 - System for fighting fire in rooms - Google Patents

Description

The invention relates to fire fighting equipment and can be used in stationary fire extinguishing means of automatic operation, mainly in areas where highly flammable liquids are used, and also in industrial enterprises of various industries, especially where there are fire hazardous areas in production areas. ,

The purpose of the inventions is to increase the efficiency of fire extinguishing by supplying the extinguishing agent directly to the fire hazardous areas with the subsequent filling of the whole room with fire extinguishing foam.

The drawing shows a diagram of a fire extinguishing system.

The system contains a battery of alternately switched on cylinders 1 and 2 with fire extinguishing composition, respectively, of the first and second fire extinguishing stages. Each cylinder through the electrically controlled gate 3 communicates with the common collector 4. The valves 3 of the cylinders 1 of the first stage of the fire extinguisher are controlled from the executive unit 5, which by its input is connected to the tegershratura 6 sensors and the outputs to the electrically controlled valves 3 of these cylinders. In addition, the outputs of the execution unit 5 are connected to the ventilation shutdown relay 7 and the time relay 8. Time relay 8 is connected to the electric control valves 3 of the cylinders 2 of the second fire extinguishing stage and to the pump 9 of the foam fire extinguishing device.

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On each fire hazardous area

The room has an individual ventilation casing 10, in which temperature sensors 6 and individual collectors 11 are placed, communicated with the common collector 4 of the extinguishing agent. Common collector 4 through valve 12 communicates with the air line.

Additionally, a foam fire fighting device is inserted into the system, containing a pump 9. Operated by a time relay 8 for transferring the foaming liquid from the tank 13 to the foam generators 14, a pressure sensor 15 connected to the pump 9, disconnecting it at full flow of the foaming liquid

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The system works as follows.

In the event of a fire in one of the fire hazard areas,

S sucked into the individual ventilation casing 10, affects the temperature sensors 6. Sensors 6 yes gat command to turn on the executive unit 5, Executive

 About block 5, in turn, gives a command to the relay 7 of the ventilation openings, to electrically operated valves 3 cylinders 1 of the first fire extinguishing stage and to the relay B time,

 S As a result, the ventilation is turned off, the electrically controlled valves of the 3 cylinders of the first stage are opened, and the fire-fighting composition of these cylinders enters the common

20 collector 4, and then through individual collectors 11 to the fire zone, covering the flame. At the same time, the relay is switched on. If through a certain

 over time, the temperature in the zone of temperature sensors will not decrease, time relay 8 will give a command to turn on electrically controlled valves 3 cylinders 2 of the second turn

.30 di fire extinguishing. As a result, an additional amount of fire-extinguishing agent will enter the fire zone. When you turn on the second stage of fire extinguishing

jj / signal to the fire station. If the fire extinguishing composition of the second fire extinguishing is not enough to eliminate fires and the temperature in the temperature zone

40 sensors 6 will not be reduced, a relay 8 of time after a certain period of time will turn on the pump 9 of foam fire extinguishing. Here, the foaming liquid from the tank

45 13 will flow into the foam generators 143, after which the whole room will be filled with foam and the fire will be extinguished. At full consumption of foaming liquid in tank 13, the sensor

, jQ 15 pressure will give the command to shut down the pump 9. This eliminates the idle pump operation and its breakdown.

The system may stop operation 5 at any earlier stage if the temperature in the temperature sensor zone b drops to a certain limit. In this case, the sensors

6 will give a command to disable the executive unit 5, which in turn will turn off the time relay 8 and the entire system will take up its original position.

After the system has completed its operation, vent 12 is opened, and the collectors 4 and 11 are flushed with compressed air from the air line.

Freon is recommended as an extinguishing agent.

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carbon dioxide, composition 3, 5 or other substances used in fire fighting. It is advisable to place in the room only individual collectors and temperature sensors, not only in the ventilation covers, but also in other places, mainly under the ceiling, as well as foam generators. All other elements of the system can be placed outside the room.

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Editor N. Dankulich

Compiled by V. Bykovsky

Tehred M. Nadi Corrector T. Kolb

Order 926/5 Circulation 432 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (1)

FIRE EXTINGUISHING SYSTEM FOR INDOOR FIRE EXTINGUISHING SYSTEM, containing a battery of cylinders with a fire extinguishing agent, each of which is connected via an electrically operated shutter to a collector, an executive unit connected to temperature sensors by an input, ventilation system ON relay, a time relay and a pressure sensor, characterized in that, for the purpose of increase the efficiency of fire extinguishing by feeding the extinguishing agent directly to the fire hazardous areas, followed by filling the entire room with extinguishing foam, it has an additional battery is new with an extinguishing agent, each cylinder of which is equipped with an electrically controlled shutter, individual collectors and ventilation hoods, a foam fire extinguishing device, including a container with foam anti-liquid, a pump with a starting device and foam generators, each fire hazardous area equipped with an individual number ^; lecturer and above it is placed individual vent casing, wherein the temperature sensors are installed, additional battery extinguishant cylinders and individual collectors connected to the collector, a container of foamable liquid through the pump is connected with the pressure sensor and foam generators _of Nia, the first output of the executive unit is connected to S with electrically operated shutters of a cylinder battery with fire-extinguishing composition V, the second output of the executive unit is connected to the relay for switching on the ventilation system and to the relay input time audio, the first output of which is connected to the gate of the electrically additional cylinders extinguishing agent battery, and a second output time switch connected to the first input of the starting device, the second input of which is connected with the output of the pressure sensor.