Method and device for generating foam in high-speed gas jet

A high-speed gas and high-speed airflow technology, which is applied in fire rescue and other fields, can solve the problems such as the inability to spray foam fire extinguishing agent, and achieve the effect of improving fire extinguishing efficiency and high foam formation rate

Active Publication Date: 2011-04-27
JIANGSU KAWEI SPECIAL PURPOSE VEHICLE MFG
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AI Technical Summary

Problems solved by technology

However, they also have an important disadvantage: they cannot spray foam fire extinguishing agent
These methods cannot make the foam fire extinguishing liquid generate foam in the high-speed gas jet of the turbojet engine, which is the reason why the foam fire extinguishing agent cannot be sprayed by turbojet fire trucks all over the world

Method used

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  • Method and device for generating foam in high-speed gas jet
  • Method and device for generating foam in high-speed gas jet
  • Method and device for generating foam in high-speed gas jet

Examples

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Embodiment

[0017] Example: Combined figure 1 and figure 2 , the water is input into the water pump 2 from the water tank 1 through the conveying pipe 3, and the inlet conveying pipe 3 of the water pump 2 is also connected with the proportional mixer 4; The mixer 4 and the electromagnetic switch 5 enter the inlet delivery pipeline 3 of the water pump 2, and the flow ratio of entering the delivery pipeline 3 to be mixed with water is set as 1%, 3%, or 1% when using an aqueous film-forming fire extinguishing agent. 6%; set it to 0.5%, 1%, 3% when using Class A foam fire extinguishing agent, and it can also be set according to needs.

[0018] The water or the mixed liquid of water and foam fire extinguishing agent pressurized by the water pump 2 enters the liquid film nozzle 7 through the annular conveying pipeline 9, and is injected into the air-water energy exchange spray barrel 8 with a liquid film jet, and is connected with the vortex jet. When the high-speed air flow of the engine hi...

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Abstract

The invention discloses a method and a device for generating foam in high-speed gas jet. The method comprises the following steps of: jetting foam extinguishing fluid to form liquid film jet, impacting a liquid film by using high-speed airflow to tear the liquid film, mixing the torn liquid film and gas to generate foam beads so as to form foam jet which does not contain flowable liquid water. A turbojet fire fighting truck has the function of jetting a foam extinguishing agent, and extinguishing efficiency is greatly improved; when a foam jetting button is not pressed, the turbojet fire fighting truck jets gas-water mist jet to disperse toxic fume in a fire scene, control fire, cool the fire scene and rescue people in the fire scene; and when the foam jetting button is pressed, the turbojet fire fighting truck jets gas-foam jet to quickly extinguish large oil gas fire and prevent oil gas from reburing, so that the turbojet fire fighting truck with the jet power of thousands of kilowatts becomes truly large fire fighting equipment.

Description

technical field [0001] The invention belongs to the field of fire protection, in particular to a method and a device for generating foam from foam fire extinguishing liquid in the high-speed gas jet flow of a turbojet engine. Background technique [0002] The turbojet fire truck is powered by a powerful aviation turbojet engine, and uses a high-speed gas jet as a carrier to spray a large-flow and high-speed fine water mist jet. Its jet power / vehicle mass ratio exceeds 100 kW / ton, which is The mobile firefighting equipment with the largest jet power. At present, many countries are developing turbojet fire-fighting devices, which are used to quickly extinguish oil and gas fires and blow away toxic smog. For example, Hungary installed two P11Ф-300 turbojet engines side by side on the T-34 tank. The high-speed gas jet cuts the injected direct water into a fine water mist jet, which becomes a turbojet fire-fighting device with huge jet power. Extinguish oil well fires; Russia i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C5/02
Inventor 姬永兴尹志程继国刘凡
Owner JIANGSU KAWEI SPECIAL PURPOSE VEHICLE MFG
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