RU192384U1 - FIRE EXTINGUISHING LIQUID RESERVOIR - Google Patents

Abstract

The utility model relates to devices for extinguishing fires, for example, using aircraft. A tank for a fire extinguishing mixture includes a sealed enclosure with openings for collecting and discharging a fire extinguishing mixture, is equipped with a refrigerator with a temperature controller, the case is thermally insulated, the internal cavity of the case is communicated with a refrigerator, an opening for the release of the extinguishing mixture is equipped with a valve and a valve opening timer. The tank may be equipped with a carbon dioxide tank connected to the internal cavity g a pressurized casing. The reservoir may be provided with means for heating the outer surface of the valve. The reservoir may be provided with an additional opening for discharging the extinguishing liquid in the lower part of the casing, the size of the additional opening being larger than the size of the main opening for discharging the extinguishing liquid.

Description

The utility model relates to devices for extinguishing fires, for example, using aircraft.

When extinguishing fires, various containers are used for the extinguishing mixture. Typically, the amount of extinguishing agent is limited by the size of the tank.

Closest to the proposed is a tank for a fire extinguishing mixture (https://www.pozhsnabnn.ru/catalog/dlya-tusheniya-lesnykh-pozharov/emkost-myagkaya-pozharnaya.html), which includes a housing with holes for the intake and release of the extinguishing mixture.

The disadvantage of this tank is the impossibility of a discrete extinguishing agent supply and the amount of extinguishing mixture supplied to the fire source limited by the size of the tank.

The task (technical result) of the proposed utility model is to create a reservoir for a fire extinguishing fluid, free from the disadvantages described above.

The problem is solved in that the tank for the extinguishing mixture, including a sealed enclosure with openings for the intake and discharge of the extinguishing mixture, is equipped with a refrigerator with a temperature controller, the housing is insulated, the internal cavity of the housing is in communication with the refrigerator, the opening for discharging the extinguishing mixture is equipped with a valve and an opening timer valve.

The tank may be equipped with a container for carbon dioxide connected to the internal cavity of the sealed enclosure.

The reservoir may be provided with means for heating the outer surface of the valve.

The reservoir may be provided with an additional opening for the release of extinguishing fluid in the lower part of the housing, and the size of the additional opening is larger than the size of the main opening for the release of extinguishing fluid.

The design of the proposed tank for extinguishing fluid provides pre-cooling and / or maintaining the temperature of the extinguishing fluid in the tank itself and the supply of chilled extinguishing fluid in discrete portions due to the presence of a valve and a valve opening timer. Discrete portions of chilled water quickly turn into hail at the freezing temperature of water. The lower the ambient temperature, the faster the formation of hailstones. However, the air temperature decreases with increasing distance from the ground, and when extinguishing fires, the too high altitude of the aircraft negatively affects the accuracy of the discharge of the extinguishing fluid. Providing the tank with a refrigerator with a temperature controller in combination with a valve and a valve opening timer allows obtaining gradients at the output at low values of negative ambient temperature, that is, not too high above the fire site.

The supply of the tank with a carbon dioxide tank connected to the internal cavity of the sealed enclosure will further increase the efficiency of fire fighting. Carbon dioxide in the form of steam released by melting a hail saturated with carbon dioxide displaces oxygen from the combustion zone, which leads to the extinguishing of the flame.

Providing the tank with a means of heating the outer surface of the valve eliminates the possibility of external icing of the valve at low temperatures.

Providing the tank with an additional opening for the release of extinguishing liquid in the lower part of the housing, the size of which is larger than the size of the main openings for discharging the extinguishing liquid, allows, if necessary, to ensure the discharge of all extinguishing liquid in the tank.

With small structural improvements, the proposed tank can be used to extinguish fires using fire engines, portable fire extinguishers, etc.

The invention is illustrated by a figure, which schematically shows the inventive reservoir, side view.

The proposed tank works as follows.

Install the tank on the aircraft. Through the hole 1 for the intake and release of the extinguishing fluid, the cavity of the tank body 2 is filled with water, for example, cooled to a temperature of 0 ° C, the temperature controller of the refrigerator 3 is set, for example, at 0 ° C. The aircraft approaches the fire at an altitude above the fire with an air temperature corresponding to the freezing temperature of the water. The time delay for the supply of the extinguishing fluid and the ambient temperature overboard the aircraft are determined. Set the timer 4 for opening the valve 5 for a minimum time, providing a discrete flow of water, for example, for 2 seconds. Fire extinguishing fluid is supplied from the tank to the fire site. The timer 4 for opening the valve 5 every 2 seconds opens the valve 5, thereby ensuring the supply of water in discrete portions. Thermal insulation 6 of the housing 2 together with the refrigerator 3 ensure the preservation of low water temperature. Since the ambient temperature corresponds to the freezing temperature of water, chilled discrete portions of water immediately turn into gradients. Passing repeatedly through the layers of the atmosphere, where the temperature changes, at first small gradients are overgrown with new layers of water, forming larger gradients. By the time of approaching the fire, the gradients contain a much larger amount of water than was at the time of the release of a discrete portion of water from the reservoir. The hailstones in the fire start to melt, absorbing heat from the fire. In this case, if the tank is equipped with a carbon dioxide tank, carbon dioxide is released from hailstones saturated with carbon dioxide, which displaces oxygen from the combustion zone, which leads to the extinguishing of the flame. Melted gradients turn into water and continue to extinguish the fire further.

After all the fire extinguishing fluid from the tank has been discharged into the fire, the aircraft returns to the refueling site. The tank is again filled with fire extinguishing liquid in the form of water and the operations described above are repeated.

The use of the proposed tank allows significantly less frequent refueling of the tank with fire extinguishing fluid and, therefore, reduce the number of departures of the aircraft, which will significantly reduce fuel consumption.

An example of a specific implementation.

The inventive tank was installed on the An-32P fire aircraft. The tank body is made of structural steel (GOST 1050-88. Calibrated rolled products, with special surface finish made of high-quality carbon structural steel) and insulated with foam (GOST 32310-2012 (EN 13164: 2008). Products made of extrusion polystyrene XPS heat-insulating industrial production, used in construction). A refrigerator was connected to the tank (GOST 26678-85. Refrigerators and freezers household electric compression of a parametric series) and the cavity of the body with a container containing carbon dioxide (GOST 8050-85. Carbon dioxide gaseous and liquid) was reported. The carbon dioxide tank is also made of structural steel (GOST 1050-88. Calibrated rolled products, with a special surface finish made of high-quality carbon structural steel). Fill the tank with water cooled to a temperature of + 1 ° C, set the temperature controller of the refrigerator to 0 ° C. An-32P fire plane flew up to the fire at an altitude of 1,500 meters above the fire with an air temperature of -8 ° C. Set the timer (GOST R 51324.2.3-2012 (IEC 60669-2-2: 2006). Switches for household and similar stationary electrical installations) for 1.5 seconds. Turned on the supply of extinguishing fluid from the tank to the fire. The timer opens the valve every 1.5 seconds (GOST 24856-2014. Pipe fittings). Chilled discrete portions of water after leaving the valve turn into gradients. Passing repeatedly through the atmosphere, where the temperature changes, the gradients are overgrown with new layers of water and by the time of approaching the fire, the size of hailstones increases by 5-10%, depending on specific weather conditions. The hailstones in the fire start to melt, absorbing heat from the fire, and emit carbon dioxide, which displaces oxygen from the combustion zone, which leads to the extinguishing of the flame. Melted gradients turn into water and continue to extinguish the fire.

To eliminate the likelihood of freezing, the valve is heated on its outer surface by means of a heater (GOST 28679-90. Steam-water heaters of heat supply systems).

Claims (1)

1. A reservoir for a fire extinguishing liquid, including a sealed enclosure with openings for collecting and discharging a fire extinguishing liquid, characterized in that it is equipped with a refrigerator with a temperature controller, the housing is insulated, the internal cavity of the housing is in communication with the refrigerator, at least one opening for discharging the fire extinguishing the mixture is equipped with a valve and a valve opening timer.

Images