Device for extinguishing forest fires reflected waves directed blasts
The device can be used to extinguish forest fires reflected waves directed blasts and improves the efficiency of fire fighting. The device comprises a reflecting screen, made in the form of a sinusoidal cylinder, and corded or point the explosive charge is in advance calculated focal point in front of the screen. The reflective screen is made of sheet metal of rectangular shape by elastic bending of the longitudinal force. Improving the efficiency of fire suppression is provided by exposure to the flame front shock waves of smaller capacity charge with maximum energy. The design of this device allows to provide a repetition of its use as material for its production is metal. The stationary device is established via a module for vehicles with wheel-tracked chassis. 2 C.p. f-crystals, 2 Il. The invention relates to the protection of the environment, namely, devices for extinguishing forest fires reflected waves directed blasts.A device for extinguishing forest fires explosion containing corded charge of explosive substances what about the substances suspended in the forest canopy on the path of fire spread. Then the explosive charge undermined in front of a forest fire, than stop its further spread.However, this device has the disadvantages that reduce the efficiency of its use, namely the partial energy of the explosion due to the fact that the flexible screen is deformed (and often breaks under the action of the incident shock wave, resulting in energy is partially dissipated in space and behind the screen. In addition, due to the shape of the screen, made in the form of a wall, part of the energy is dissipated in the half-space in front of the screen, thereby to extinguish the fire uses a small part of the energy released in the explosion.The closest analogue is a device for extinguishing forest fires reflected waves directed blasts containing reflective screen (EN 2033826 C1, 30.04.1995).In this device, the reflective screen is made in the form of a dihedral angle value 2= 110120oand corded charge is located on the bisector dihedral angle parallel to the edge at a distance of X = (0,40,6)lcoswhere l is the length of the side of the screenThe disadvantages of the device include irrational choice of the shape of the reflecting screen in the form of a dihedral angle, which leads to interference of the reflected waves, which in the case of achieving protivogazy significantly reduce its effectiveness. In addition, this screen is a single-use device and its use unsafe.Object of the invention is a device for extinguishing forest fires reflected waves directed blasts, providing technical result consists in increasing the effectiveness of fire fighting.This technical result in the device for extinguishing forest fires reflected waves directed blasts containing the reflection screen is achieved by the fact that reflective screen is made in the form of a sinusoidal cylinder, and corded or point the explosive charge is in advance calculated focal point in front of the screen.The reflective screen is made of sheet metal of rectangular shape by its elastic bend the tracked chassis.In Fig. 1 shows a diagram of the device of Fig.2 shows the individual phases of the reflected shock waves obtained when using the Unit for extinguishing forest fires reflected waves directed blasts contains reflective screen 1 (Fig.1) made in the form of a sinusoidal cylinder (unlike traditional parabolic batter surfaces), and the explosive charge 2, corded or point is in advance calculated focal point in front of the screen.The reflective screen is made by elastic bending of the longitudinal force of the sheet metal of rectangular shape. This bending is fixed steel rods 3 (Fig.1) that allows to vary the geometrical parameters of the sinusoidal shape of the reflector.The device operates as follows.The blast wave resulting from detonation point or cord explosive charge has a cylindrical or spherical shape. Upon reaching the reflective surface these forms change and develop in the form of a shock wave, calculated theoretically on the computer.In Fig.2 shows a phase of explosive shock waves in some moments of time. When atemi reflecting waves will have a minimum area, hence, the energy transferred shock wave will have a maximum value.Thus, the quality of fire is increased due to the impact on the flame front shock waves of smaller capacity charge with maximum energy.The application of this device will allow for a repetition of its use as material for its production is metal, and the reflective screen can be made in the field. This also increases the safety and reliability of suppression fire. In addition, the device can be used stationary, mounted on vehicles with wheel-tracked chassis.
Claims1. Device for extinguishing forest fires reflected waves directed blasts containing the reflecting screen, wherein the reflecting screen is made in the form of a sinusoidal cylinder, and corded or point the explosive charge is in advance calculated focal point in front of the screen.2. The device under item 1, characterized in that the reflecting screen is made of sheet metal of rectangular shape by elastic bending of the longitudinal force.3. Ustroistvye chassis.
FIELD: fire-fighting equipment, particularly for localizing fire appeared in process orifices, for instance during coloring large articles or on stage.
SUBSTANCE: method involves using elastic fire barrier formed as dropping curtain device for fire localization. Device for above method implementation performs curtain movement in several modes. Device structure is so that device protects maintenance staff or actors present in working area from injuries during heavy curtain motion. Screen has door located in lower part thereof to evacuate people from dangerous area by rescuers or for people self-evacuation.
EFFECT: possibility of injury prevention, prevention of hazardous products escape from fire site, provision of seal between screen and frame when process opening is fully closed.
FIELD: fire-fighting, particularly for extinguishing forest fires.
SUBSTANCE: method involves burning combustible materials in direction from control line to fire propagation line with the use of remote operated robotic system. Remote operated robotic system includes flame thrower and rotary screw drive, which provides system movement simultaneously with digging control line.
EFFECT: reduced time of fire service response, increased efficiency of fire localization and operational safety.
FIELD: forestry, particularly for fighting fires in high-capacity and medium-capacity peat beds.
SUBSTANCE: drainage system includes a number of water drainage channels with control-and-shutoff valves, manifold with drain lines connected thereto and intercepting channel located above drained peat bed and communicated with water inlet. Intercepting channel is provided with control-and-shutoff means to accumulate surface water flow and to create water reserve. Intercepting channel is connected with manifold head part by means of pipeline having valve gate. Manifold is provided with movable partition. Intercepting channel has antifiltering shield.
EFFECT: possibility of fire localization without operation stoppage and without underflooding surrounding territories and, as result, reduced economic losses.
FIELD: fire-fighting equipment, particularly for extinguishing/localizing large-scale and powerful fires, including forest and forest-steppe fires, difficult-to-access fires, namely steep mountains, impassable taiga, jungle or fires close to risk areas (explosive environment or high-temperature areas).
SUBSTANCE: method involves exerting influence of air-blast wave on fire site and applying high-speed jet of air-dispersed fire-extinguishing mixture formed during fire-suppression device explosion. Fire-suppression device comprises vessel with fire-extinguishing composition and dispersing charge. Vessel is provided with structural members providing device operation in service conditions. Structural members are separated from vessel until dispersing charge blasting.
EFFECT: extended range of technical means for fire-suppression device delivery to fire site, reduced time of their preparing to use, prevention of device fragments spreading after device blasting.
4 cl, 3 dwg
FIELD: fire-fighting equipment, particularly for peat fire spread prevention.
SUBSTANCE: method involves forming intermittent strips; supplying water to intermittent strips and forming wetted area. Wetted area is formed by arranging mole drains along intermittent strip lengths and supplying water to them to moisture peat bed through the whole thickness thereof. To perform preventive water conservation intermittent strip surfaces located above mole drains are loosened for 0.15 - 0.2 m depth and 1.0 - 1.5 m width and intermittent strip surfaces above mole drains in fire vicinity are rolled up. Fire inhibitors are added to water before supplying thereof in mole drains.
EFFECT: increased fire-protective efficiency regardless of peat bed thickness.
2 cl, 2 dwg
FIELD: fire fighting equipment with the use of helicopters with rotary propellers, which create powerful descending air flow, particularly to extinguish forest fires.
SUBSTANCE: method involves suspending conical case with fire-extinguishing devices under helicopter and using powerful descending air flow produced by helicopter propellers. If necessary air flow may be mixed with mechanical particles (sand) or chemical additives for extinguishing fires. The case is produced of high-strength and light-weight material to provide case weight of not more than 2 tons.
EFFECT: possibility to use air flow going from helicopter propeller, reduced fuel consumption due to prevention of helicopter usage in shuttle mode, possibility of continuous fire extinguishing, increased helicopter park.
3 cl, 1 dwg
FIELD: fire-fighting means, particularly to extinguish ground and crown forest fires and to prevent spreading thereof.
SUBSTANCE: method involves supplying fire-extinguishing gas from turbojet plant compressor nozzle to fire site, wherein gas is directed to burned-out and unburned matter along with simultaneous blowing off thereof in burned-out areas. Gas is delivered through removable compressor nozzle head flattened from both sides thereof. Nozzle head may rotate through 90° to divide fire front into parts to be separately extinguished.
EFFECT: increased efficiency along with reduced danger when extinguishing fire.
2 cl, 3 dwg
FIELD: fire-fighting equipment, particularly to combat large-scale fires, including forest and steppe ones, fires in difficult-to-access areas (steep mountains, impassible taiga, jungle) and fire sites located near high-risk objects (highly explosive or high-temperature ones).
SUBSTANCE: device comprises stabilizer and vessel, both formed of thermoplastic material, as well as dispersing charge and fire-extinguishing substance located into vessel. The device also has explosive means and suspension system including cover plate with eyes and members enclosing vessel. Suspension system is connected with stabilizer bottom by means of flexible tie and is provided with releasing mechanism and with members providing forced detaching thereof from vessel.
EFFECT: prevention of scattering fragments of fire-extinguishing device after its operation, increased surface of fire-extinguishing substance contact with burning matter.
4 cl, 3 dwg
FIELD: fire protection means, particularly to protect peat beds against fire or to prevent burning of compacted loose combustible materials, particularly pulp and paper industry waste materials.
SUBSTANCE: method involves forming channels in peat bed surface in fire-risk areas during winter period; filling the channels and depressions with water; freezing thereof in the channels and depressions to moisten peat bed during water ice thawing. To protect ice against the influence of direct sunlight ice is covered with heat-insulation material, particularly with ground or peat layer. Water is fed from underground horizons located under the peat beds.
EFFECT: increased efficiency.
FIELD: fire fighting, particularly movable fire-extinguishing devices.
SUBSTANCE: robotic apparatus comprises system to provide self-defense thereof against fire hazard and means to prevent twisting of fire-extinguishant delivery hose connecting fire-extinguisher with nozzle over the full circular operating range when nozzle is aimed at fire site.
EFFECT: possibility to operate in extreme conditions, increased reliability and simplified structure.
2 cl, 2 dwg