Double-aerosol-extinguishant spraying device

A technology of injection device and fire extinguishing agent, applied in fire rescue and other directions, can solve the problems of small flow of fire extinguishing agent, inability to achieve large flow injection, easy re-ignition of flame, etc., and achieve the effect of improving fire extinguishing efficiency

Active Publication Date: 2013-06-05
SHANDONG GUOTAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These defectives are: water jet fire engine forms a connection line of water jet from the outlet of spray gun (cannon) to fire source, extinguishes the fire with the mode of water jet impact cooling fire source, and this mode of spraying fire extinguishing agent with " point to point " is " One-dimensional injection pattern of fire extinguishing agent", which improves the ability to suppress Class A fires
Although gaseous fire extinguishing agents such as carbon dioxide and heptafluoropropane have "full flooding" fire extinguishing performance, they cannot achieve large-flow injection
However, the disadvantage of the solid-based aerosol fire extinguishing agent is that when its concentration drops, the extinguished flame is easy to re-ignite under the action of residual heat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] See figure 1 , image 3 , Figure 4 When extinguishing a building fire, start the high-speed fan 10, and the high-speed fan 10 produces a flow rate of 20-50 m 3 / s high-speed gas jet enters the aerosol fire extinguishing agent injection cylinder 1, and the rate of fire from the nozzle outside the machine is 100-200 m / s. Open the first solenoid valve 7 at the lower end of the water delivery ring 2, and the water supplied by the fire truck with a pressure of 0.8-1.0 Mpa and a flow rate of 10-30 kg / s passes through 8-16 superfine water on the water delivery ring 2. The mist nozzle 5 shoots an ultra-thin high-speed water jet. The water jet impacts on the curved reflector 12 with an angle of 10°~15° and sputters into ultra-fine water mist, which forms water-based gas under the impact of high-speed airflow. Sol fire extinguishing agent jet. The nozzle of the aerosol fire extinguishing agent jet cylinder 1 is aimed at the opened door and window channels of the...

Example Embodiment

[0022] Example 2

[0023] See figure 2 , image 3 When used to extinguish fires in petrochemical plants, aircraft, etc., the aviation gas turbine 11 is usually used as the jet power of the gas jet, and the aviation gas turbine 11 is started, and the flow rate is 20-50 m 3 / s gas jet, the wind speed at the outlet is 300~500 m / s. Open the second electromagnetic valve 8 at the lower end of the foam fire extinguishing agent ring 3, and the water film-forming foam fire extinguishing fluid or type A foam fire extinguishing fluid with a pressure of 0.8-1.0 Mpa and a flow of 40-80 kg / s supplied by the fire truck 6 to 10 foam fire extinguishing agent nozzles 6 on the foam fire extinguishing agent ring 3 are injected into the aerosol fire extinguishing agent jet cylinder 1 to form an air foam fire extinguishing agent jet, which is mixed with the high-speed airflow to increase the speed and sprays at the fire source. Open the electromagnetic valve 9, the ultrafine dry powder fire extinguis...

Example Embodiment

[0025] Example 3

[0026] See figure 1 , image 3 , When used for emergency rescue to blow away the toxic, harmful, flammable and explosive gas leaked from the dangerous chemical transportation vehicle or the gas pipeline, the high-speed fan 10 is parked downwind. Start the high-rate fan 10 or aviation gas turbine 11, and produce a flow rate of 20-50 m 3 / s, a high-speed gas jet with a flow rate of 100~500 m / s, blowing or diluting the toxic, harmful, flammable and explosive gas leaked from the hazardous chemical transportation vehicle or gas pipeline; when the leaked toxic and harmful gas is sulfur When hydrogen, chlorine, ammonia and other gases are easily soluble in water, open the solenoid valve 7 at the lower end of the water delivery ring 2, and the water supplied by the fire truck with a pressure of 0.8 to 1.0 Mpa and a flow rate of 10 to 40 kg / s, 8-16 ultra-fine water mist nozzles 5 on the water delivery ring 2 are injected into the aerosol fire extinguishing agent jet cyl...

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Abstract

The invention discloses a double-aerosol-extinguishant spraying device which comprises a high-shooting-speed fan or an aero-gas turbine, an aerosol extinguishant spraying tube, a water supply ring, a foamite supply ring, a superfine dry powder extinguishing agent spraying gun, a superfine water mist spraying nozzle, a foamite spraying nozzle, a first solenoid valve, a second solenoid valve and a third solenoid valve. The double-aerosol-extinguishant spraying device achieves mass flow and high-shooting-speed spraying. Double-aerosol-extinguishant jet flow sprayed by the double-aerosol-extinguishant spraying device is sprayed into an internal space of a building on fire, aerosol extinguishants are rapidly dispersed to generate a 'totally flooding' state and enter the interior of flames under the action of entrainment airflow of the flames, and consequently a fire in the building can be rapidly put out, and the flames are prevented from reburning.

Description

Technical field [0001] The invention belongs to the technical field of fire fighting, and particularly relates to a dual aerosol fire extinguishing agent spraying device. Background technique [0002] From the beginning of the last century to the end of the 1920s, water jet fire trucks, foam fire trucks, and dry powder fire trucks appeared in the world. These highly maneuverable fire trucks played a role in fighting violent fires such as urban fires and petrochemical plant fires. It plays an important role and is the main fire fighting equipment in the current fire fighting. But the actual fire fighting also revealed its technical flaws. These defects are: the water jet fire truck forms a line of water jets from the outlet of the jet gun (cannon) to the fire source, and extinguishes the fire by impacting and cooling the fire source by the water jet. This "point-to-point" method of spraying fire extinguishing agent is " One-dimensional spray mode of fire extinguishing agent", wh...

Claims

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Application Information

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IPC IPC(8): A62C31/00A62C31/02A62C31/07
Inventor 姬永兴王戈何周继
Owner SHANDONG GUOTAI TECH
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