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 screen

The 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.

Claims

1. 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.

 

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