A vortex fire engine is a fire engine that is mainly equipped with fire fighting devices such as fire pumps, water tanks, foam tanks, and turbojet engines. This kind of fire truck was first used by a Hungarian to extinguish fire-fighting equipment for fighting oil well fires. In recent years, due to its remarkable fire-controlling and fire-extinguishing capabilities, energy conservation, and small secondary disasters, it has received the attention of governments of all countries. After more than ten years of development, it has now become more effective in fighting fires in oil fields, mines, and airports. Applications. 1. Working principle and main structure of vortex fire engines 1.1 Origin of turret fire engines In 1991, at the end of the Gulf War, in order to extinguish 727 oil well fires in Kuwait, 27 fire brigade from 10 countries implemented various advanced fire-fighting equipment. Fire fighting. Fire truck equipped with WP-5 turbojet engine Among them, Hungary installed two retiring turbojet engines for the MiG-21 aircraft on T-34 tanks. The high-velocity gas jet generated by the turbojet engine cuts the injected seawater into misty water and shoots it at the oil well fire to extinguish every well fire. The time varies from 12s to 2min, which is much faster than the fire extinguishing methods used by fire brigades in other countries. Thus, gas-water two-phase flow fire extinguishing devices that are powered by turbojet engines are known. Vortex fire engine advantages: 1, huge jet power It is generally believed that the power of a conventional fire engine and the mass ratio of the entire vehicle cannot be increased after reaching 30 KW/t. Otherwise, the increase of the torque will increase the transmission mechanism and increase the weight of the chassis, which will offset the power increase. the benefits of. The T-6 fire truck in the United States has a full-load mass of 19.2 tons, an engine power of 367 kw, and a power-to-mass ratio of 19.1 kw/t. There is less extinguishing agent contained in the airport rapid response fire truck, and its power-to-mass ratio can reach about 26kw/t. In order to increase reserve power, some types of airport fire engines use 2 mega engines for drive and injection, but their total power-to-mass ratio still does not exceed 30 kW/t. Therefore, no conventional fire engines with engine power exceeding 900 kW have appeared so far in the world. The turret fire engine's injection power reaches 4000kw, and the mass at full load is 24.6t. Its power-to-mass ratio is 160kw/t, breaking the limit of 30kw/t, and thus breaking through the existing fire engine jet Toray cannot achieve fog. The difficulty of long-range water injection has become a large spray-powered water spray fire truck installed on the chassis of conventional vehicles. 2, use a large flow of water spray Direct current of 60kg/s is injected into the atomization device of the vortex fire truck, and the instantaneous spray coverage of the high-speed mist-like water jet is greater than 200 square meters. The farthest jet distance can reach 100m, forming the best water mist jet strength between 30-60m distance. The vortex firefighting engine achieves long-distance, high-intensity, large-area coverage of large-volume spray water. The high-speed exhaust-mist jet has a strong cutting and destroying effect on the stable combustion of the flame. The high-flow mist water with a droplet size of 1-1.2 mm is rapidly suffocated and burned by cutting into the flame under the high-speed exhaust gas. When the fog water of 60kg/s flow is fully vaporized, it can absorb 1.35x10 5th kj of heat per second to generate a 100m3 volume of water vapor, which is equivalent to the effect of flame cooling and dilute oxygen and suffocation combustion. Significantly, it took only 9 seconds to extinguish the 80 square meter oil tank fire. Therefore, the ability of vortex fire fighting vehicles to control fires and fire extinguishing efficiency are more than ten times higher than that of conventional fire engines. At the same time, the exhaust-mist jets also have a strong role in dispelling toxic and harmful gases and blocking the radiant heat of the fire. They can help rescue people trapped by the fire under the protection of water mist jets and avoid reducing the casualties of personnel. 3. Created a new method of spraying foam extinguishing agent The mechanism of bubble formation in vortex fire engines is different from that of conventional fire engines. Foam guns rely on the ejecting action of water jets to suck air into the gun barrel, and the air and mixing liquid are mixed to produce foam. The foam beads have no mobility after they fall to the ground, but they have good adhesion and directly form a uniform thickness foam cover layer. The good adhesion force makes it possible to form a stable foam cover on the surface of a complex shape object, eliminating the need for foam jets. The time required to form a uniform coating by flowing it. Therefore, the foam of the same quality is sprayed. The vortex firefighting fire truck obtains a larger foam covering area than the conventional fire fighting vehicle, better exerts the performance of the foam fire extinguishing agent, and creates a new injection method of the foam fire extinguishing agent. The vortex fire engine is also a kind of strong wind generator, and it is a powerful assistant for rescue. When a toxic and harmful flammable and explosive gas leaks, the vortex fire truck squirts nearly 100 cubic meters of high-flow gas per second. The stream carries a pure water mist (injection of mist water can be adjusted at any time, and no foam fire extinguishing agent is sprayed at this time), and the leaked toxic and harmful gas can be quickly blown and diluted so that it cannot reach the ignited concentration. Rapidly organize personnel to implement rescue measures. Vortex fire engines are currently the most powerful fire-fighting equipment for dealing with oil and gas fires. They are new members of the family of fire engines and are entering relevant fire-fighting fields. Swimming Pool Inverter Hot Heat Pump Swimming Pool Inverter Hot Heat Pump,Heat Pump Ground Inverter,Mitsubishi Heat Pump Compressor,Pool Heat Pump Inverter 28Kw Newfair Eco-Energy(Guangdong) Co.,Limited , https://www.newfairecoenergy.com
However, the air flow at this time is small and is in a state of negative pressure, and all liquids cannot be foamed. The injected foam and the non-foamed liquid are mixed together to make the foam rich in fluidity. The vortex firefighting engine is a high-speed tail gas jet impact, shear foam mixture, forming a large flow of foam beads 2-3mm, under the action of a strong flow of all the mixture of liquid foam beads, there is no liquid water. The foam bead jet instantaneously covers an area of ​​200 square meters. When it is sprayed for 1 minute, the foam layer formed on an area of ​​200 square meters has an average thickness of 5 cm.