CN205667691U - Water bubble mixes spraying fire-extinguishing system automatically - Google Patents

Abstract

The utility model relates to a water-foam automatic mixing sprinkler fire extinguishing system, which is characterized in that it includes a dual-purpose control valve group and accessories, a wet alarm valve group, a foam liquid storage tank, a plurality of proportional mixers, and the water inlet side of the fire extinguishing system The water main pipe connected to the main pipe, the water-foam mixture main pipe and multiple sprinkler units are connected to the water inlet side of the fire extinguishing system. The wet alarm valve group is connected to the water main pipe and the foam liquid storage tank inlet branch pipe respectively. The top of the foam liquid storage tank is connected to the dual-purpose control valve group and accessories through pipelines, and there are multiple proportional mixer accessories connected in parallel through pipelines under the dual-purpose control valve group and accessories. Each proportional mixer accessory is connected to the corresponding proportional mixer. The proportional mixer is connected to the sprinkler unit through the water-foam mixture main pipe, which is equipped with a total water flow indicator and a signal valve. The advantages are: it can extinguish liquid fires in time and effectively, and its cost performance is high; it is not limited by storage space, and its operation is stable and reliable.

Description

Water-foam automatic mixing sprinkler system

technical field

The utility model belongs to the technical field of fire extinguishing equipment in buildings, in particular to a water-foam automatic mixed spray fire extinguishing system.

Background technique

At present, when a fire breaks out in the underground garage of a building, because a large number of cars are stored in the underground garage, no matter what the cause of the fire is, the gasoline in the car will eventually catch fire, that is, a liquid fire. For gasoline fires, fixed pipe network water is used as the fire extinguishing agent, which cannot extinguish the fire caused by gasoline in a timely and effective manner. Foam is an effective extinguishing agent for extinguishing gasoline fires. However, in the underground garage, due to the limited storage space and the price of foam extinguishing agent is much more expensive than water, if the foam extinguishing agent is used completely, its cost performance is low and cannot be implemented. An effective water-foam automatic mixed sprinkler fire extinguishing system is designed.

Contents of the invention

The utility model provides a water-foam automatic mixed sprinkler fire extinguishing system which can effectively extinguish liquid fires in time, is suitable for limited storage space and has high cost performance, in order to solve the technical problems existing in the known technology.

The technical scheme that the utility model takes for solving the technical problem existing in the known technology is:

The water-foam automatic mixed sprinkler fire extinguishing system is characterized in that it includes a dual-purpose control valve group and accessories, a wet alarm valve group, a foam liquid storage tank, multiple proportional mixers, a water main pipe connected to the water inlet side of the fire extinguishing system, The water-foam mixture dry pipe and multiple spray units are connected with a wet alarm valve group on the water inlet side of the fire extinguishing system, and the wet alarm valve group is respectively connected to the water main pipe and the water inlet branch pipe of the foam liquid storage tank through pipelines. The upper part of the liquid storage tank is connected to the dual-purpose control valve group and accessories through pipelines, and the lower part of the dual-purpose control valve group and accessories is connected in parallel with multiple proportional mixer accessories through pipelines, and each proportional mixer accessory is connected to its corresponding The proportional mixer is installed on the water-foam mixed liquid main pipe, and the proportional mixer is connected to the spray unit through the water-foam mixed liquid main pipe. The water main pipe is equipped with a total water flow indicator and Water mains signal valve.

The utility model can also adopt the following technical solutions:

The dual-purpose control valve group and its accessories include a dual-purpose control valve, a proportional pressure reducing valve and a first ball valve located on one side of the dual-purpose control valve.

The proportioner accessories include a second ball valve, a check valve and a Y-strainer.

The wet alarm valve group includes a valve body, pressure gauges and signal valves located on both sides of the valve body, and a retarder and hydraulic alarm bell located on the other side of the valve body. The signal valve is connected to the main water inlet.

The spray unit includes a plurality of mixed liquid branch pipes communicated with the water-foam mixed liquid main pipe and a plurality of spray heads arranged on the mixed liquid branch pipes.

The utility model has the advantages and positive effects: because the utility model adopts the above-mentioned technical scheme, when a fire occurs, the water on the water inlet side of the fire extinguishing system flows out from the pipeline of the wet alarm valve to the dual-purpose control valve group, Open the dual-purpose control valve group. At this time, the water on the water supply side will maintain a certain pressure after passing through the dual-purpose control valve group, and squeeze the foam liquid in the capsule of the foam liquid storage tank. At this time, the foam liquid will flow to the proportional mixing due to the pressure. The water in the container is mixed with most of the water flowing through the proportional mixing chamber to form a qualified foam mixture and then sent to the nozzle of the spray unit, thereby realizing the fire extinguishing function of the foam mixture. The water-foam mixed liquid fire extinguishing method can not only transport the foam mixed liquid over long distances, timely and effectively extinguish liquid fires, but also has high cost performance; it is not limited by the storage space, and the fire extinguishing system operates stably and reliably.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural view of the dual-purpose control valve group and accessories of the utility model;

Fig. 3 is a structural schematic diagram of an accessory of the proportional mixer of the present invention.

In the figure: 1, wet alarm valve group; 1-1, signal valve; 1-2, pressure gauge; 1-3, valve body; 1-4, retarder; 1-5, hydraulic alarm bell; 1-6, Pressure switch; 2. Main water pipe; 3. Signal valve of main water pipe; 4. Total water flow indicator; 5. Inlet branch pipe of foam liquid storage tank; 6. Dual-purpose control valve group and accessories; ;6-2, constant ratio pressure reducing valve; 6-3, first ball valve; 7, foam liquid storage tank; 8, proportional mixer accessories; 8-1, second ball valve; 8-2, check valve; 8 -3. Y-type filter; 9. Sub-water flow indicator; 10. Proportional mixer; 11. Water-foam mixed liquid main pipe; 12. Mixed liquid branch pipe; 13. Nozzle;

detailed description

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

It should be noted that, unless otherwise clearly stipulated and limited, the terms "first", "second" and the like do not represent sequential installation, nor do they represent the importance of the described components.

Please refer to Figure 1-Figure 3, water-foam automatic mixed sprinkler fire extinguishing system, including dual-purpose control valve group and accessories 6, wet alarm valve group 1, foam liquid storage tank 7, multiple proportional mixer accessories 8, multiple Proportional mixer 10, water main pipe 2 connected to the water inlet side of the fire extinguishing system, water-foam mixed liquid main pipe 11 and multiple spraying units. A wet alarm valve group 1 is connected to the water inlet side 14 of the fire extinguishing system. The wet alarm valve group is respectively connected to the main water pipe and the water inlet branch pipe 5 of the foam liquid storage tank through pipelines. Control valve group and accessories 6, multiple proportional mixer accessories 8 are connected in parallel under the dual-purpose control valve group and accessories through pipelines, and each proportional mixer accessory is connected to its corresponding proportional mixer 10 through pipelines. The proportional mixer is installed on the water-foam mixed liquid main pipe 11, and the proportional mixer is connected to the spray unit through the water-foam mixed liquid main pipe, and the water main pipe 2 is equipped with a total water flow indicator 4 and a water main pipe signal valve 3.

In this embodiment, there are three proportional mixer accessories 8 connected in parallel under the dual-purpose control valve group and accessories through pipelines, and the proportional mixer accessories 8 in the water-foam automatic mixing sprinkler system can also The area to select its installation quantity.

In this embodiment, the dual-purpose control valve group and accessories include a dual-purpose control valve 6-1, a proportional pressure reducing valve 6-2 and a first ball valve 6-3 located on one side of the dual-purpose control valve.

In this embodiment, the proportional mixer accessories include a second ball valve 8-1, a check valve 8-2 and a Y-type filter 8-3.

In this embodiment, the wet alarm valve group includes a valve body 1-3, pressure gauges 1-2 and signal valves 1-1 located on both sides of the valve body, and a retarder 1-4 and hydraulic valve located on the other side of the valve body. Alarm bell 1-5 and pressure switch 1-6, the water inlet main pipe is connected under the described signal valve.

In this embodiment, the spray unit includes a plurality of mixed liquid branch pipes 12 communicated with the water-foam mixed liquid main pipe 11 and a plurality of spray nozzles 13 arranged on each mixed liquid branch pipe. The mixed liquid branch pipes and sprinklers in the sprinkler fire extinguishing system can also be selected according to the area of the underground garage.

In this embodiment, the diameters of the water main pipe 2 and the water-foam mixed liquid main pipe 11 are both DN150, and the diameters of the water inlet branch pipe 5 of the foam liquid storage tank and the dual-purpose control valve group are both DN150. DN40, thereby ensuring a small pressure loss, and can transport the foam mixture for a long distance. The pipe diameters of the water main pipe, the water-foam mixed liquid main pipe and the mixed liquid branch pipe in the water-foam automatic mixed sprinkler system can also be calculated and selected according to the area of the underground garage and the actual situation.

The working principle of the utility model is:

When a fire breaks out, firstly, the glass ball of the closed sprinkler is blasted due to fire, the pressurized water in the pipeline flows to the blasted sprinkler, and the water flows through the total water flow indicator 4. Due to the change of the front and rear pressure of the wet alarm valve group, the wet alarm valve When the group is turned on, the hydraulic alarm bells 1-5 start to sound, and the action signal of the pressure switch is transmitted to the alarm controller of the automatic fire alarm and linkage control system, thereby realizing effective control of the initial fire.

Then, the fire pump is started, and the proportional mixer is controlled by the dual-purpose control valve group 6 . The dual-purpose control valve group is opened. At this time, the water on the water supply side maintains a certain pressure after passing through the dual-purpose control valve group, and squeezes the foam liquid in the capsule of the foam liquid storage tank. At this time, the foam liquid flows into the proportional mixer due to pressure. It is mixed with most of the water flowing through the proportional mixing chamber to form a qualified foam mixture, which is sent to the spray head of the spray unit, so as to realize the fire extinguishing function of the foam mixture.

Finally, after the foam liquid is consumed, the initial water system in the pipe network is restored, which can effectively cool down the fire after extinguishing the fire and effectively prevent the fire from re-igniting.

The embodiments described in the accompanying drawings of the utility model are exemplary, and are only used for explaining the utility model, but should not be construed as limiting the utility model.

Claims (5)

1. water-foam mixes spraying fire-extinguishing system automatically, it is characterised in that: include dual-purpose control valve group and adnexa, wet type Alarm valve group, foam solution holding vessel, multiple proportioner are responsible for water conduit tube, the water-foam being connected with fire extinguishing system influent side Mixed liquor main and multiple spray unit, connect at fire extinguishing system influent side and have wet alarm valve group, wet alarm valve group to pass through Pipeline connects water conduit tube and foam solution holding vessel water inlet pipe respectively, is connected dual-purpose above described foam solution holding vessel by pipeline Control valve group and adnexa, be parallel with multiple proportioner adnexa by pipeline below dual-purpose control valve group and adnexa, described often Individual proportioner adnexa passes through the proportioner that pipeline connection is corresponding, and described proportioner is arranged on water-foam On mixed liquor main, described proportioner connects spray unit by water-foam mixing liquid main, on described water conduit tube equipped with Total water current indicator and signal valve.

Water-foam the most according to claim 1 mixes spraying fire-extinguishing system automatically, it is characterised in that: described dual-purpose control Valve group and adnexa include dual-purpose control valve, the proportional pressure reducing valve being positioned at dual-purpose control valve side and the first ball valve.

Water-foam the most according to claim 1 mixes spraying fire-extinguishing system automatically, it is characterised in that: described ratio mixes Device adnexa includes the second ball valve, check-valves and y-type filter.

Water-foam the most according to claim 1 mixes spraying fire-extinguishing system automatically, it is characterised in that: described wet type is reported to the police Valve group includes valve body, the Pressure gauge being positioned at valve body both sides and signal valve and is positioned at the delayer of valve body opposite side, warning water system And pressure switch, described signal valve connects influent side supervisor.

Water-foam the most according to claim 1 mixes spraying fire-extinguishing system automatically, it is characterised in that: described spray unit Including the multiple mixed liquor arms connected with water-foam mixing liquid main and the multiple shower nozzles being arranged on mixed liquor arm.